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Biology Practical Class 12 CBSE 2022: Book, File, Syllabus

Biology Practical Class 12 CBSE 2022-23: CBSE Class 12 Biology Practical Syllabus 22-23 incorporates important experiments which help the students learn and understand the concepts through visualisation. Through Biology Practical Class 12 CBSE syllabus, the students study the principles that are common to animals, plants and microorganisms and understand the connection between Biology and other areas of science. 

This article provides the students with CBSE Class 12 Biology Practical Syllabus 22-23, question papers, sample papers, etc. In this article, students can also find the details about CBSE Class 12 practical exams like the evaluation scheme, list of experiments, and project work. Continue reading to learn more about Biology Practical Class 12 CBSE 2022.

Biology Practical Class 12 CBSE: Overview

Before discussing further details about CBSE Class 12 Biology Practical, let us have a brief overview of CBSE Class 12 Physics in the table below:

Exam NameCentral Board of Secondary Education Class 12
Conducting BodyCentral Board of Secondary Education (CBSE)
Exam LevelClass 12
Mode of ExaminationOffline
SubjectBiology Practical
Exam Duration3 Hours
CBSE Official Website
NCERT Official Website 

CBSE Class 12 Biology Practical Syllabus 22-23

Students can check the Biology Practical Class 12 CBSE syllabus below:

A. List of Experiments:

1. Prepare a temporary mount to observe pollen germination.

2. Study the plant population density by the quadrat method.

3. Study the plant population frequency by the quadrat method.

4. Prepare a temporary mount of the onion root tip to study mitosis.

5. Isolate DNA from available plant materials such as spinach, green pea seeds, papaya, etc.

B. Study and observe the following (Spotting):

1. Flowers adapted to pollination by different agencies (wind, insects, birds).

2. Pollen germination on stigma through a permanent slide or scanning electron micrograph.

3. Identification of stages of gamete development, i.e., T.S. of testis and T.S. of ovary through

permanent slides (from grasshopper/mice).

4. Meiosis in onion bud cell or grasshopper testis through permanent slides.

5. T.S. of blastula through permanent slides (Mammalian).

6. Mendelian inheritance using seeds of different colour/sizes of any plant.

7. Prepared pedigree charts of any one of the genetic traits such as rolling of tongue, blood

groups, ear lobes, widow’s peak and colour blindness.

8. Controlled pollination – emasculation, tagging and bagging.

9. Common disease causing organisms like Ascaris, Entamoeba, Plasmodium, any fungus

causing ringworm through permanent slides, models or virtual images or specimens.

Comment on symptoms of diseases that they cause.

10. Models specimen showing symbolic association in root modules of leguminous plants, Cuscuta on host, lichens.

11. Flash cards models showing examples of homologous and analogous organs.

Here is the CBSE Class 12 Biology Practical Examination Syllabus for Visually Impaired Students:

C. Items for Identification/ familiarity with the apparatus for assessment in practicals (All experiments) 

Beaker, flask, petriplates, soil from different sites – sandy, clayey, loamy, small potted plants, aluminium foil, paintbrush, test tubes, starch solution, iodine, ice cubes, Bunsen burner/spirit lamp/water bath, large flowers, Maize inflorescence, model of developmental stages highlighting morula and blastula of frog, beads/seeds of different shapes/size/texture Ascaris, Cactus/Opuntia(model).

D. List of Practicals

1. Study of flowers adapted to pollination by different agencies (wind, insects).

2. Identification of T.S of morula or blastula of frog (Model).

3. Study of Mendelian inheritance pattern using beads/seeds of different sizes/ textures.

4. Preparation of pedigree charts of genetic traits such as rolling of tongue and colour blindness.

5. Study of emasculation, tagging and bagging by trying out an exercise on controlled pollination.

6. Identify common disease causing organisms like Ascaris (model)and learn some common symptoms of the disease that they cause.

7. Comment upon the morphological adaptations of plants found in xerophytic conditions.

Note: The above practicals may be carried out in an experiential manner rather than recording observations. Students can also check Biology Practical Class 12 CBSE PDF for more details.

CBSE Class 12 Biology Practical Marking Scheme

Here is the Biology Practical Class 12 CBSE 2022 Evaluation Scheme:

Time allowed: 3 Hours

Max. Marks: 30

One Major Experiment 55
One Minor Experiment 2 & 3 4
Slide Preparation 1 & 45
Spotting7
Practical Record + Viva Voce (Credit to the students’ work over the academic session may be given)4
Investigatory Project and its Project Record + Viva Voce (Credit to the students’ work over the academic session may be given)5

Here is the CBSE Class 12 Biology Practical Examination Evaluation Scheme for Visually Impaired Students:

Time: 02 Hours

Identification/ Familiarity with the apparatus5
Written test (Based on given/ prescribed practicals)10
Practical Records 5
Viva10

General Guidelines

  • The practical examination will be of two hours duration. The list of ten experiments is included here. 
  • The written examination in practicals for these students will be conducted at the time of the practical examination of all other students.
  • The written test will be of 30 minutes duration.
  • The question paper given to the students should be legibly typed. It should contain a total of 15 practical skill based, very short answer type questions. A student would be required to answer any 10 questions.
  • A writer may be allowed to such students as per CBSE examination rules.
  • All questions included in the question paper should be related to the listed practicals. Every question should require about two minutes to be answered.
  • These students are also required to maintain a practical file. A student is expected to record at least five of the listed experiments as per the specific instructions for each subject. These practicals should be duly checked and signed by the internal examiner.
  • The format of writing any experiment in the practical file should include aim, apparatus required, simple theory, procedure, related practical skills, precautions etc.
  • Questions may be generated jointly by the external/internal examiners and used for assessment.
  • The viva questions may include questions based on basic theory/ principle/ concept, apparatus/ materials/ chemicals required, procedure, precautions, sources of error etc.

NCERT Books for Class 12 Biology (Hindi/English) PDF

Here are the download links for the Class 12 Biology NCERT PDF :

CBSE Biology Class 12 PDF Download
NCERT Biology Class 12 PDF Download
Class 12 Biology Book

FAQs About Biology Practical Class 12 CBSE 2022

Here are the most frequently asked questions about Biology Practical Class 12 CBSE 2022:

Q.1: Where can I find the list of experiments asked in CBSE Class 12 Biology Practical exam?

Ans: Students may be asked to prepare a temporary mount to observe pollen germination or study the plant population density by the quadrat method. Find the complete list of experiments in the above article.

Q.2: What is the format of writing an experiment in the practical file of CBSE Class 12 Biology Practical?

Ans: The format of writing any experiment in the practical file should include aim, apparatus required, simple theory, procedure, related practical skills, precautions etc.

Q.3: Where can I find Biology Practical Class 12 CBSE PDF?

Ans: The link to download Biology Practical Class 12 CBSE PDF is provided above. In the above article, students can also check CBSE Class 12 Biology Practical Syllabus 22-23.

Q.4: What is the evaluation scheme for Biology Practical Class 12 CBSE 2022?

Ans: The Class 12 CBSE Biology Practical Exam will carry 30 marks, and the duration of the exam will be 3 hours. Check the complete marking scheme in the above article.

Q.5: What may be asked in Biology Practical Class 12 CBSE Viva?

Ans: The viva questions may include questions based on basic theory/ principle/ concept, apparatus/ materials/ chemicals required, procedure, precautions, sources of error etc.

You may also like to read:

We hope you find this article on Biology Practical Class 12 CBSE 2022 helpful. Please reach out to us if you have any queries regarding CBSE Class 12th. We will surely get back to you.

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CBSE Class 12 Biology Practical 2024, Syllabus, Marking Scheme, Guidelines

biology class 12 practical experiments

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Content Curator | Updated On - Aug 27, 2024

CBSE CLASS XII Latest Notifications

  • 07 September, 2024 : CBSE Class 12 Sample Papers 2024-25 Released, Download Now.

CBSE Class 12 Biology Practical syllabus is released along with the theory syllabus through a common PDF. Students can check the practical syllabus at the official website cbseacademic.nic.in .

Out of the total 100 marks, the theory paper of Biology will carry 70 marks and the practical paper carries 30 marks in CBSE Class 12 Exams 2024 . The Biology practical syllabus involves major and minor experiments, slide preparation, spotting, investigatory projects, viva voce, and other activities.

CBSE Board recommends a total of 60 periods for practical sessions. The practical curriculum is designed to enhance students' comprehension and application of scientific principles and fundamental concepts. In this article, students can find the complete CBSE Class 12 Biology Practical Syllabus for the academic year 2023-24.

Also Check: CBSE Class 12 Date Sheet 2024


2.1
2.2
2.3

CBSE Class 12 Biology Practical 2024 Marking Scheme

The marking scheme for the CBSE Biology Practical Class 12 is tabulated below:

Evaluation Component Marks
One Major Experiment 5
One Minor Experiment (Experiment 2 & 3) 4
Slide Preparation (Experiment 1 & 4) 5
Spotting 7
Practical Record + Viva Voce 4
Investigatory Project + Project Record + Viva Voce 5

Also Check:

CBSE Class 12 Biology Practical Syllabus 2023-24

CBSE Class 12 Biology Practical syllabus involves a combination of experiments, slide preparation, and spotting. It is crucial for students to have a strong understanding of the theoretical concepts before performing practical experiments to comprehend the fundamental principles effectively.

The Biology Practical Class 12 is divided into three parts - list of experiments, spotting, and practicals. The detailed syllabus for each part is provided below.

Part A - List of Experiments

The following experiments shall be performed by students in CBSE Class 12 Biology Practical:

  • Prepare a temporary mount to observe pollen germination.
  • Study the plant population density by quadrat method.
  • Study the plant population frequency by quadrat method.
  • Prepare a temporary mount of the onion root tip to study mitosis.
  • Isolate DNA from available plant material (e.g., spinach, green pea seeds, papaya).

Part B - Spotting (Study and Observe)

Students need to observe and identify the following:

  • Flowers adapted to pollination by different agencies (wind, insects, birds).
  • Pollen germination on stigma through a permanent slide or SEM.
  • Identification of stages of gamete development (T.S. of testis and ovary).
  • Meiosis in onion bud cells or grasshopper testis through permanent slides.
  • T.S. of blastula through permanent slides (Mammalian).
  • Mendelian inheritance using seeds of different colors/sizes of any plant.
  • Prepared pedigree charts of genetic traits (e.g., rolling of tongue, blood groups).
  • Controlled pollination - emasculation, tagging, and bagging.
  • Study of common disease-causing organisms like Entamoeba, Plasmodium,Ascaris and any fungus causing ringworm through permanent slides, models, or virtual images.
  • Models showing symbolic association in root modules of leguminous plants, Cuscuta on host, and lichens.
  • Flashcard models showing examples of homologous and analogous organs.

Part C - Practicals

The practicals included in the CBSE Class 12 Biology Syllabus 2023-24 are given below:

  • Study of flowers adapted to pollination by different agencies (wind, insects).
  • Identification of T.S. of morula or blastula of frog (model).
  • Study of mammalian inheritance pattern using beads/seeds of different sizes/texture.
  • Preparation of pedigree charts of genetic traits such as rolling of tongue, colour blindness .
  • Study of emasculation, tagging, and bagging by trying out an exercise on controlled pollination.
  • Identify common disease causing organisms like Ascaris (model), and learn some common symptoms of the disease that they cause.
  • Comment upon the morphological adaptations of plants found in xerophytic conditions.

Note: These practicals shall be performed by the students rather than observing.

Check Syllabus of Other Subjects:

CBSE Class 12 Biology Practical Important Questions

Students can check some important questions for CBSE Class 12 Biology Practical and Viva Voce below:

  • What is a pollen grain?
  • What is the shape of the pollen grain?
  • What are enzymes?
  • Define mitosis
  • Why is mitosis called somatic cell division ?
  • Which kind of soil is best suited for plant growth?
  • What is hummus?
  • What determines the PH of the soil?
  • What is a tectum?
  • What is pollination?
  • Which part of the flower contains pollen?
  • What is the male part of the flower called?
  • What happens to the generative nucleus in the pollen tube of a germinating pollen grain?
  • The female gamete is produced by?
  • What do you mean by soil texture?
  • Which type of soil is suitable for plant growth?
  • What are the different types of soil?
  • Mention some of the main components of soil
  • What is the term used to describe the scientific study of soil?
  • What pH range favors the best plant growth?
  • What do you mean by the term ‘ buffer ’?
  • What is the pH of tap water?
  • What do you understand by prokaryotic organisms ?
  • What is the importance of pH?
  • What is the full form of DNA?
  • What is the full form of RNA?
  • What is the difference between DNA and RNA?
  • Who discovered the structure of DNA?
  • Where will you look for DNA and RNA in the cell?
  • What are the building blocks of nucleic acids?
  • Who gave the double helical structure of DNA?
  • Differentiate between mitosis in plants and animals?
  • Why do we use onion root tips or grasshopper larvae for studying mitosis?
  • What do you mean by the term ‘karyokinesis’
  • Why mitosis is called equational division?
  • What is the function of saliva?
  • Name three glands that produce saliva in the body

CBSE Class 12 Biology Practical Book - Lab Manual

CBSE has prescribed Class 12 Biology Lab Manual for the practical syllabus. CBSE Class 12 Biology Lab Manual contains each experiment in detail with proper procedure, theory, aim, apparatus required etc. The book also contains Viva voce questions for practice for CBSE Class 12 Biology Practical.

CBSE Class 12 Biology Practical Guidelines

CBSE has mentioned the below guidelines for Biology Practical Class 12 in its official syllabus PDF. Students must strictly adhere to these guidelines.

  • CBSE Class 12 Biology Practical exam will be conducted for a duration of two hours.
  • Students will be provided 30 minutes for the written test.
  • The practical question paper will contain 15 practical based very short answer questions. Students have to answer any 10 questions.
  • Students have to prepare a practical file also. The practical file must have at least 5 experiments.
  • The practical file must be checked by the school teachers.
  • The VIVA questions will be based on basic theory, principle, concept, apparatus, materials, chemicals required, procedure, precautions, and sources of error.

Frequently Asked Questions

Ques. What are the maximum marks allotted to CBSE Class 12 Biology Practical?

Ans. CBSE Class 12 Biology Practical carries a maximum of 30 marks.

Ques. How much time is given for the CBSE Class 12 Biology Practical exam?

Ans. CBSE Class 12 Biology Practical examination will be conducted for 3 hours.

Ques. What does the CBSE Class 12 Biology Practical evaluation scheme include?

Ans. CBSE Class 12 Biology Practical evaluation scheme consists of major and minor experiments, slide preparation, spotting, practical record with viva voce, and the investigatory project along with its project record and viva voce.

Ques. What are the major topics covered in the CBSE Class 12 Biology Practical Syllabus 2023-24?

Ans. CBSE Class 12 Biology Practical syllabus includes experiments related to pollen germination, plant population density, mitosis study, DNA isolation, and others. Additionally, there are spotting topics on pollination, stages of gamete development, meiosis etc.

Ques. How many periods are recommended for practical sessions as per the CBSE Board?

Ans. CBSE Board recommends a total of 60 periods for practical sessions.

Ques. What is the purpose of CBSE Class 12 Biology Practical?

Ans. CBSE Class 12 Biology Practical aims to provide students with hands-on experience in conducting experiments and practical applications related to various biological concepts. It helps reinforce theoretical knowledge and develop practical skills.

Ques. Is the CBSE Class 12 Biology Practical essential for scoring well in the board examination?

Ans. CBSE Class 12 Biology Practical carries 30 marks. These marks are enough to impact your overall marks and percentage. Moreover, getting good marks in practicals also reduces the pressure of attaining very high scores in theory exams for a good percentage.

Ques. How are practical experiments evaluated in CBSE Class 12 Biology?

Ans. Practical experiments in CBSE Class 12 Biology are evaluated based on students' experimental skills, accuracy in performing tasks, data analysis, and their ability to interpret and analyze the results obtained.

Ques. How can students prepare for the CBSE Class 12 Biology Practical?

Ans. Students can prepare for the CBSE Class 12 Biology Practical by thoroughly understanding the theoretical concepts, practicing the experiments beforehand, and seeking guidance from teachers to perform effectively during the practical examination.

* The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College.

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Mastering Biology Concepts With Biology Practical Class 12

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Your Guide to Understanding Biology in a Practical Sense is Here

The Biology Practical Class 12 exams are an essential part of the syllabus for Class 12 students. These practical examinations aim to help students understand and appreciate the practical aspects of Biology, which is an important subject in the field of medical sciences. They also provide students with hands-on experience in performing experiments, observing and analyzing data, and drawing conclusions based on their findings.

The Biology Practical Notebook Class 12 Answers PDF provided by Vedantu cover a wide range of topics, including microbiology, plant physiology, genetics, and ecology. Students are required to perform experiments related to these topics and record their observations and findings in a lab manual. The practicals are designed to provide students with a comprehensive understanding of the concepts taught in class and help them develop their analytical and problem-solving skills.

The Biology Practical Class 12 exams are an excellent way for students to gain practical knowledge and prepare for their final exams. The practicals are also an opportunity for students to work in a team and develop their communication and interpersonal skills. Students who perform well in the practicals are more likely to excel in their final exams and pursue a career in the field of Biology.

Vedantu Offers Biology Practical Class 12 PDF for Students

Vedantu is a popular online learning platform that offers a wide range of resources for students preparing for CBSE Class 12 Biology practical exams. One of the key resources provided by Vedantu is the Class 12 Biology Practical Questions With Answers PDF that students can use to record their observations and findings during practical experiments.

The practical PDFs and manuals provided by Vedantu contain detailed instructions on how to perform each experiment, including the materials and equipment required. They also provide guidelines on how to record data, analyze results, and draw conclusions based on the findings. This makes it easier for students to follow the experimental procedure and ensures that they obtain accurate and reliable results.

These study resources are designed to help students prepare for their CBSE Class 12 Biology practical exams. By using these resources, students can gain a better understanding of the practical aspects of Biology and develop their skills in performing experiments, recording data, and drawing conclusions.

Moreover, the Biology Practical Class 12 PDF and manuals are available online, which makes them easily accessible to students anytime, anywhere. Students can use these resources to prepare for their practical exams at their own pace and convenience, without having to rely on traditional classroom-based teaching.

MCQs for Biology Practical Class12 With Answers 

1. Which of the following is an example of vegetative propagation?

b) Fertilization

c) Pollination

d) Parthenogenesis

Answer: a) Budding

2. The part of the flower that develops into a fruit is:

Answer: c) Ovary

3. Sperm production occurs in which of the following organs in males?

a) Epididymis

b) Vas deferens

c) Seminal vesicle

Answer: d) Testis

4. Which of the following is a barrier method of contraception?

a) Oral pills

b) Intrauterine devices

d) Tubectomy

Answer: c) Condoms

5. The phenotype of an organism is determined by:

a) Its genotype

b) Its environment

c) Both genotype and environment

d) None of the above

Answer: c) Both genotype and environment

6. The genetic material of most organisms is composed of:

c) Proteins

d) Carbohydrates

Answer: b) DNA

7. The theory of natural selection was proposed by:

a) Gregor Mendel

b) Charles Darwin

c) Jean-Baptiste Lamarck

d) Alfred Russel Wallace

Answer: b) Charles Darwin

8. Which of the following is a viral disease?

a) Tuberculosis

Answer: d) AIDS

9. Which of the following is a biofertilizer?

b) Superphosphate

c) Rhizobium

Answer: c) Rhizobium

10. Which of the following is used for the production of cheese and curd?

b) Lactobacillus

c) Aspergillus

d) Rhizopus

Answer: b) Lactobacillus

11. The process of joining two DNA molecules from different sources is called:

a) Recombinant DNA technology

b) Gel electrophoresis

c) DNA sequencing

d) Polymerase chain reaction

Answer : a) Recombinant DNA technology

12. The process by which green plants produce organic food from carbon dioxide and water in the presence of sunlight is called:

a) Respiration

b) Photosynthesis

c) Fermentation

d) Oxidation

Answer: b) Photosynthesis

13. What is the purpose of preparing a temporary mount of the onion root tip?

a) To study photosynthesis

b) To study respiration

c) To study mitosis

d) To study meiosis

Answer: c) To study mitosis

14. Which of the following plant materials can be used to isolate DNA?

b) Green pea seeds

d) All of the above

Answer: d) All of the above

15. Which of the following pollination agents is wind pollinated?

Answer: c) Wind

16. Which of the following can be used to observe pollen germination on the stigma?

a) Permanent slide

b) Scanning electron micrograph

c) Quadrat method

Answer: a) Permanent slide

Ace Your Studies With Biology Practical Class 12 PDF

Biology Practical Class 12 exams are the first step that students take towards a more practical approach to their studies. Hence, it is significant that they are able to score good marks in the practical exams. Here are some of the benefits of Class 12 Biology Practicals.

Develop Practical Knowledge

Biology practicals help students develop practical skills such as observation, measurement, data recording, and analysis. These skills are crucial for students pursuing careers in the medical or scientific field.

Problems Solving Skills 

Biology practicals require students to think critically and come up with solutions to problems they encounter during experiments. This helps students enhance their problem-solving abilities and develop a logical approach to scientific experiments.

Understand Concepts Better

Biology practicals provide students with a hands-on approach to learning and help them understand complex concepts in Biology better. Biology Practical Class 12 Diagram help students visualize the concepts and phenomena they have learned in class and provide a deeper understanding of the subject.

Enhance Your Confidence 

Biology practicals provide students with the opportunity to work independently or in a team, which helps boost their confidence. Students gain confidence in their ability to carry out experiments, record observations, and draw conclusions based on their findings.

Exam Preparation At Its Best

Biology Practical File Class 12 provide students with a chance to apply the theoretical concepts they have learned in class to real-world situations. This helps students prepare for their final exams, as the practicals test their understanding of the subject and require them to apply their knowledge.

Boost Research Skills 

Biology practicals require students to research and prepare for the experiments beforehand. This helps students enhance their research skills and develop an understanding of how to plan and execute scientific experiments.

Get Communication Skills 

Biology practicals require students to work in a team and communicate their findings to their peers and teachers. This helps students develop their communication skills, which are essential for working in a scientific field.

Master the Concepts With Biology Practical Class 12 Notebooks and PDF 

Vedantu is an excellent platform for students to learn, practice, and excel in their CBSE Class 12 Biology practical exams. With the help of the Biology Practical notebook Class 12 Answers PDF , students will be able to focus more on the experiments and gain better experience and practical knowledge.

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FAQs on Mastering Biology Concepts With Biology Practical Class 12

1. How are the CBSE Class 12 Biology practicals evaluated?

The CBSE Class 12 Biology practicals are evaluated by the school teachers or external examiners appointed by the CBSE board. The practicals are evaluated based on the student's performance in conducting the experiment, recording observations, analyzing data, and drawing conclusions. The examiners may also ask questions related to the experiment to test the student's understanding of the concept.

2. Are Vedantu's Biology practical notebooks and manuals updated regularly?

Yes, the notebooks and manuals for CBSE Class 12 Biology practicals are updated regularly to ensure that they cover the latest curriculum and syllabus changes. Our team of subject matter experts and educators work hard to keep the content up-to-date and relevant for the students. Any changes in the syllabus or exam pattern are reflected in the practical notebooks and manuals as soon as possible.

3. How can students access Vedantu's Class 12 Biology practical resources?

Students can find the CBSE Class 12 Biology practical resources through their official website or Vedantu's learning app. The practical notebooks and manuals are available in digital format, which can be downloaded and saved for offline access.

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CBSE 12th Biology Practical Syllabus 2024-25 - Download PDF

Megha Sharma Image

Megha Sharma ,

May 30, 2024 | CBSE 12th

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CBSE 12th Biology Practical Syllabus 2024-25 covers various topics, such as DNA, RNA, Cells, Plants, and more. Students can refer to the syllabus PDF and adequately prepare for the exams.

CBSE 12th Biology Practical Syllabus 2024-25 - Download PDF

Table of Contents

CBSE 12th Biology Practical Syllabus 2024-25

Evaluation scheme for cbse 12th biology practical syllabus 2024-25, prescribed books for cbse 12th biology practical syllabus 2024-25, sample papers for cbse 12th biology practical 2024-25, cbse 12th biology practical exam day instructions.

CBSE 12th Biology Practical Syllabus 2024-25 consists of three parts: section A, section B, and section C, respectively. These sections include observation, major and minor experiments, slide preparation, viva voice, project, and more. 

The Biology Practical Syllabus 2024-25 for  CBSE Class 12 Exam 2024-25  consists of 30 marks out of 100 marks. As per the CBSE board's recommendation, there must be 60 periods for practicals, which will aid the students in enhancing their learning of various concepts.

CBSE 12th Biology Practical Syllabus 2024-25 PDF

Candidates must pass the CBSE class 12 practical examinations for better scores in total. Candidates can go through the CBSE 12th Biology Practical Syllabus 2024-25 PDF stated below.

CBSE 12th Biology Practical Syllabus 2024-25 PDF
Particulars Details
CBSE 12th Biology Practical Syllabus 2024-25 PDF

Also Read: CBSE Class 12 Syllabus 2024-25

CBSE 12th Biology Practical Syllabus 2024-25 involves a combination of experiments, slide preparation, and laboratory observation. Students must understand the theoretical concepts before performing the practical experiments to comprehend the fundamental principles effectively.

The Biology Practical Class 12 is divided into experiments, spotting, and practicals and is part of the CBSE Class 12 board exam marking evaluation process. Candidates can review the CBSE 12th Biology Practical Syllabus 2024-25 stated below.

Section A: List of Experiments

In this section, candidates must perform a set of experiments for five marks. The following experiments shall be conducted by students in CBSE Class 12 Biology Practical exams:

  • Prepare a temporary mounting to observe pollen germination.
  • Examine the plant population density using the quadrat method.
  • Examine the plant population frequency using the quadrat method.
  • Formulate a temporary mount of the onion root tip to learn mitosis.
  • Separate DNA from plant material like spinach, papaya gre, and pea seeds.

Section B: Spotting (Study and Observe)

In this stage, students observe and analyse the happenings of any experiment or observation and document it during the process. Candidates will be required to observe and analyse the following activities.

  • Flowers adapted to pollination by different agents (wind, insects, birds).
  • Pollen germination on stigma through a permanent slide or SEM.
  • Identification of phases of gamete development (T.S. of testis and ovary).
  • Meiosis in onion bud cells or grasshopper testis through permanent slides.
  • T.S. of blastula through permanent slides (Mammalian).
  • Mendelian inheritance uses seeds of different colours/sizes of any plant.
  • Prepared pedigree charts of genetic traits (e.g., rolling of tongue, blood groups).
  • Controlled pollination - emasculation, tagging, and bagging.
  • Study of common disease-causing organisms like Entamoeba, Plasmodium, Ascaris and any fungus-causing ringworm through permanent slides, models, or virtual images.
  • Models depicting symbolic association in root modules of leguminous plants, Cuscuta on the host, and lichens.
  • Flashcard models display examples of homologous and analogous organs.

Section C: Practicals

In this section, candidates must do practical experiments in real-time and record experiment results on paper. The practicals included in the CBSE 12th Biology Practical Syllabus 2024-25 are given below:

  • Analysis of flowers adapted to pollination by different agencies (wind, insects).
  • Identification of T.S. of morula or blastula of frog (model).
  • Examine mammalian inheritance patterns using beads/seeds of different sizes/textures.
  • Preparation of pedigree charts of genetic traits such as rolling of tongue colour blindness.
  • Analysis of emasculation, tagging, and bagging by trying out an exercise on controlled pollination.
  • Recognise common disease-causing organisms like Ascaris (model) and learn some common symptoms of the disease that they cause.
  • Remark upon the morphological adaptations of plants found in xerophytic conditions.

Also Read: CBSE Class 12 Biology Deleted Syllabus 2024-25

There are some specific parameters and marks weightage per question and candidates are examined accordingly. Students can find the evaluation scheme for CBSE 12th Biology Practical Syllabus 2024-25 mentioned below.

CBSE 12th Biology Practical Syllabus 2024-25
Units Chapters
Unit-VI Reproduction Chapter-1: Sexual Reproduction in Flowering PlantsChapter-2: Human ReproductionChapter-3: Reproductive Health
Unit-VII Genetics and Evolution Chapter-4: Principles of Inheritance and VariationChapter-5: Molecular Basis of InheritanceChapter-6: Evolution
Unit-VIII Biology and Human Welfare Chapter-7: Human Health and DiseasesChapter-8: Microbes in Human Welfare
Unit-IX Biotechnology and its Applications Chapter-9: Biotechnology – Principles and ProcessesChapter-10: Biotechnology and its Applications
Unit-X Ecology and Environment Chapter-11: Organisms and PopulationsChapter-12: EcosystemChapter-13: Biodiversity and Its Conservation

Also Read: CBSE 10th & 12th Exams Seating Arrangement

Candidates can practise their CBSE 12th Biology Practical Syllabus 2024-25 by following certain books that have detailed content and sample exercises. Students can find the best books for CBSE 12th Biology Practical mentioned below.

  • Biology, Class-XII, Published by NCERT
  • Other related books and manuals brought out by NCERT (consider multimedia also)
  • Biology Supplementary Material (Revised). Available on the CBSE website.
  • CBSE Class 12 Biology Practical Book- Lab Manual

Also Read: NCERT Books for Class 12 Biology

Candidates must solve CBSE 12 Biology sample papers and CBSE 12 Biology previous years question papers for better practice. Candidates can go through the previous year sample papers for CBSE 12th Biology Practical stated below.

CBSE 12th Bioogy Sample Papers 
Particulars CBSE 12 Biology Sample Papers PDF
2024
2023
2022

Term 1:

Term 2:

2021
2020
2019
2018
2017
2016

Also Read: Professional Courses after 12th Science

CBSE officials expect students to follow some specific guidelines on the practical exam day. Candidates can go through the exam day instructions stated below.

  • The CBSE Class 12 Biology Practical exam will be held for two hours, and students must wear an apron.
  • Candidates will be allotted 30 minutes for the written test and must finish their writing within the time frame.
  • The practical question paper will have 15 practical, concise answer questions, and candidates must answer at least ten questions.
  • Candidates must prepare a practical file consisting of at least five experiments.
  • Questions will be based on fundamental theory, principle, concept, apparatus, materials, chemicals required, procedures, precautions, and sources of error.

Also Read:  Integrated Courses After 12th

Q: Who created the CBSE 12th Biology Practical Syllabus 2024-25?

Q: How many sections are there in CBSE 12th Biology Practical Syllabus 2024-25?

Q: How to practise better for CBSE 12 Biology Practicals?

Q: What are the best books to study for CBSE 12 Biology Practicals?

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Biology Class 12 Lab Experiments

Welcome to our comprehensive collection of Biology Class 12 Laboratory Experiments, complete with a detailed manual to guide you through each session. This curated list encompasses a range of experiments designed to provide students with hands-on experience in the fascinating realm of Biomedical Engineering engineering. The accompanying manual serves as an invaluable companion, offering a structured approach to each experiment, ensuring clarity in understanding the apparatus required, step-by-step procedures, meticulous observation guidelines, and a systematic recording of results.

Each experiment has been meticulously crafted to cover key concepts and principles, allowing students to apply theoretical knowledge to practical scenarios. The manual not only facilitates a smooth execution of the experiments but also includes viva questions to stimulate critical thinking and reinforce theoretical foundations. Whether you are a novice or an experienced learner, this compilation is a comprehensive resource that aims to enhance your understanding of Biology Class 12 phenomena through a structured and engaging laboratory experience.

Experiment list of Biology Class 12 Lab

  • 1. Comment on symptoms of diseases cause by Common disease causing organisms
  • 2. Controlled pollination - emasculation, tagging and bagging
  • 3. Prepared pedigree charts of any one of the genetic traits such as rolling of tongue, blood groups, ear lobes, widow's peak and colour blindnes
  • 4. Mendelian inheritance using seeds of different colour/sizes of any plant
  • 5. T.S. of blastula through permanent slides
  • 6. Meiosis in onion bud cell or grasshopper testis through permanent slides
  • 7. Identification of stages of gamete development, i.e., T.S. of testis and T.S. of ovary through permanent slides (from grasshopper/mice)
  • 8. Flowers adapted to pollination by different agencies (wind, insects, birds)
  • 9. Isolate DNA from available plant material such as spinach, green pea seeds, papaya, etc
  • 10. Prepare a temporary mount of onion root tip to study mitosis
  • 11. Study the plant population frequency by quadrat method
  • 12. Study the plant population density by quadrat method
  • 13. Prepare a temporary mount to observe pollen germination

Biology Class 12 Laboratory Programm Outcomes for the Students

This repository of Biology Class 12 lab experiments and its accompanying manual is a treasure trove for students delving into the world of Biomedical Engineering engineering. The manual provides a detailed roadmap for each experiment, outlining the required apparatus, step-by-step procedures, guidelines for observations, and a systematic format for recording results. The experiments cover a spectrum of topics, allowing learners to explore the intricacies of experiment fundamentals, devices, and phenomena. The inclusion of viva questions adds an interactive dimension, encouraging students to delve deeper into the theoretical underpinnings of each experiment and fostering a holistic understanding of the subject matter. Whether you are gearing up for examinations or simply seeking to deepen your practical knowledge, this collection promises a rewarding journey through the practical aspects of Biomedical Engineering engineering.

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  • CBSE Class 12 Syllabus

CBSE Biology Practical Syllabus for Class 12 2024: Download PDF

Cbse class 12 biology practical syllabus 2023-24: check the complete details about the practical syllabus of cbse biology in class 12th for the 2023-24 session. download the complete curriculum in pdf as well.  .

Pragya Sagar

CBSE Class 12 Biology Practical 2023-24 Syllabus

A. list of experiments .

  • Prepare a temporary mount to observe pollen germination. 
  • Study the plant population density by quadrat method. 
  • Study the plant population frequency by quadrat method. 
  • Prepare a temporary mount of onion root tip to study mitosis. 
  • Isolate DNA from available plant material such as spinach, green pea seeds, papaya, etc.

B. Study and Observe the following (Spotting): 

  • Flowers adapted to pollination by different agencies (wind, insects, birds). 
  • Pollen germination on stigma through a permanent slide or scanning electron micrograph.
  • Identification of stages of gamete development, i.e., T.S. of testis and T.S. of ovary through permanent slides (from grasshopper/mice). 
  • Meiosis in onion bud cell or grasshopper testis through permanent slides. 
  • T.S. of blastula through permanent slides (Mammalian). 
  • Mendelian inheritance using seeds of different colour/sizes of any plant. 
  • Prepared pedigree charts of any one of the genetic traits such as rolling of tongue, blood groups, ear lobes, widow's peak and colour blindness. 
  • Controlled pollination - emasculation, tagging andbagging. 
  • Common disease causing organisms like Ascaris, Entamoeba, Plasmodium, any fungus causing ringworm through permanent slides, models or virtual images or specimens. Comment on symptoms of diseases that they cause. 
  • Flash cards models showing examples of homologous and analogous organs.

CBSE Class 12 Biology Practical Syllabus 2023-24 PDF Download

Prescribed Books for CBSE Biology Practical Class 12: 

  • Biology, Class-XII, Published by NCERT 
  • Other related books and manuals brought out by NCERT (consider multimedia also) 
  • Biology Supplementary Material (Revised). Available on the CBSE website.

CBSE Class 12 Biology Practical 2023-24 Evaluation Scheme

Max Marks: 30

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Exercise 01

To study the reproductive parts of commonly available flowers

Exercise 01

Principle: The male reproductive parts of a flower are the stamens collectively called androecium and the female reproductive parts are the carpels/pistils collectively called gynoecium. The individual units of stamen consist of a filament, which supports the anther lobes. Gynoecium consists of stigma, style and ovary. Many variations are found in different characteristics of both the stamens and carpels. We shall try to study these variations in the reproductive parts of flowers in the exercise.

Requirement: Commonly available flowers, needles, forceps, razor/scalpel blade, brush, slides, cover slip, watch glass, magnifying lens, dissecting microscope, compound microscope, etc.

(i) Familiarise with the terms to describe the reproductive parts of flowers given in annexures of Exercise No. 11 of Laboratory Manual: Biology (Class XI) and at the end of this experiment.

(ii) Observe the flower with the naked eye, hand lens or under a dissecting microscope. Study their reproductive parts and count the number of stamens and record their cohesive and adhesive features.

(iii) Cut L.S. of the flower and place it on a slide to observe the following characters:

(a) Placement of anthers

(b) Position of the ovary: epigynous/perigynous/hypogynous.

(iv) Mount one stamen on a slide and study the following characters:

(a) Attachment of filament to anther

(b) Dehiscence pattern of the anther lobes for discharge of pollen.

(v) Cut T.S. of anther lobe to observe the number of pollen sacs.

(vi) Mount the pistil on a slide and study style, stigma and ovary. Record the number of stigma and nature of pistil.

(vii) Cut T.S. of ovary, mount it on a slide and observe

(a) Number of locules in the ovary

b) Type of placentation

(c) Number of ovules per locule

(viii) Draw labelled figures of your preparation and observations.

Description of reproductive parts of flowers

Androecium:

(i) Syngenesious: Filaments free and anthers united, e.g., Sunflower.

(ii) Synandrous: Stamens fused all through their length, e.g., Cucurbita

(iii) Adelphous: Anthers remain free and filaments are united.

Adelphous condition can be

(a) Monoadelphous—United to form 1 bundle, e.g., China rose

(b) Diadelphous—United to form 2 bundles, e.g., Pea (c) Polyadelphous—United into more than two bundles, e.g., Lemon

(i) Epipetalous: Stamens fused with petals, e.g., Sunflower, Datura

(ii) Epiphyllous: Stamens fused with perianth, e.g., Lily

(ii) Adnate: Filament attached along the whole length of anther, e.g., Michelia, Magnolia

(iii) Dorsifixed: Filament attached to the back of anther, e.g., Passion flower

(iv) Versatile: Anther lobes attached with filament in the middle portion with both ends free, e.g., Gramineae family

(ii) Longitudinal: Pollens released through the longitudinal slit of another lobes, e.g., China rose, Cotton

(ii) Perigynous: Other floral parts are attached around the ovary, e.g., Apple, Guava

(iii) Hypogynous: Position of ovary superior to other floral parts, e.g., Sunflower

(i) Apocarpous: Carpels are free. Each carpel has its own style and stigma, e.g., Rose

(ii) Syncarpous: Carpels are united, e.g., Lady’s finger, Tomato

(i) Unilocular: One locule, e.g., Rose, Pea

(ii) Bilocular: Two locules, e.g., Datura

(iii) Multilocular: Many locules, e.g., Lady’s finger, China rose

(ii) Axile: The ovary is partitioned into several chambers or locules and the placentae are borne along the septa of the ovary, e.g., Tomato, China rose

(iii) Parietal: The ovules develop on the inner wall of the ovary or on peripheral part. Ovary unilocular but in some cases becomes two chambered due to formation of a false septum, e.g., Mustard

(iv) Free central: Ovules are borne on the central axis and septa are absent, e.g., Carnation, Chilly

(v) Basal: Placenta develops at the base of the ovary, e.g. ,Sunflower.

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There are 19 simulations in the PhET Biology Collection . Here are some highlights:

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Build a gene network! The lac operon is a set of genes which are responsible for the metabolism of lactose in some bacterial cells. Explore the effects of mutations within the lac operon by adding or removing genes from the DNA.




Insert channels in a membrane and see what happens. See how different types of channels allow particles to move through the membrane.




Explore natural selection by controlling the environment and causing mutations in bunnies.




Stimulate a neuron and monitor what happens. Pause, rewind, and move forward in time in order to observe the ions as they move across the neuron membrane.




Explore stretching just a single strand of DNA using optical tweezers or fluid flow. Experiment with the forces involved and measure the relationship between the stretched DNA length and the force required to keep it stretched. Is DNA more like a rope or like a spring?



These are collection of lab activities developed from the Virtual Courseware Project at Cal State University-Los Angeles. The following experiments offer a series of interactive, inquiry-based biology simulations and exercises designed for college and AP high school biology students.

Online Activity Labs: Topics:
Students explore the concept of homeostasis using arterial blood pressure as an example. The interaction of variables related to heart rate, vessel radius, blood viscocity, and stroke volume can be studied by direct manipulation, or indirectly through interventions, such as hemorrhage, exercise, dehydration, shock, intravenous infusion, epinephrine, and foxglove. Nerve impulses can be monitored under the experimental conditions. Realistic case studies such as hypertension and congestive heart failure are also available for investigation.



Students investigate how differences in population size, age-structure, and age-specific fertility and mortality rates affect human population growth. This lab can be used to investigate phenomena such as exponential growth, stable age structure, zero population growth, and demographic momentum.



Students study properties of enzymatic reactions by photometrically measuring the initial rate of synthesis of a product. Enzyme principles that can be investigated with this lab are pH and temperature optimums, Michaelis-Menton constants such as Km, Ki and Vmax, and the different classes of inhibitors.



Students investigate the process of adaptation by natural selection by manipulating various parameters of a bird species, such as initial mean beak size, variability, heritability, and population size, and various parameters of the environment such as precipitation and island size. This lab can be used to investigate evolutionary principles such as directional, disruptive and balancing selection, the dependence of natural selection on the variability and heritability of a trait, founder effects, genetic drift, and extinction.



Students learn the principles of genetic inheritance by designing matings between female and male fruit flies carrying one or more genetic mutations. This lab can be used to demonstrate genetic principles such as dominant versus recessive traits, independent assortment, sex-linked inheritance, linkage and chromosome maps, and modifications to Mendelian ratios caused by lethal mutations and epistasis.



Students study the relationship of the structure and function of hemoglobin to the structure and function of human red blood cells. They use techniques such as gel electrophoresis, peptide sequencing, and computer modeling to study hemoglobin structure. They can investigate how mutations in hemoglobin genes affect its polypeptide sequence and relate these effects to the symptoms of individual case studies.



Students measure photosynthetic rates of leaves by carbon dioxide assimilation. They investigate how photosynthetic rates change as a function of light intensity, light quality, temperature, and ambient carbon dioxide. This lab can be used to demonstrate concepts such as dark respiration, photochemical efficiency, carbon dioxide conductance, light compensation points, photosynthetic saturation, and differences in photosynthetic rates of C-3 versus C-4 plants, sun versus shade plants, and different levels of polyploidy.



Students measure the oxygen consumption of mitochondrial extracts in the presence of different substrates, inhibitors, and ADP to investigate the TCA cycle, electron transport, and oxidative phosphorylation. Seven substrates and six inhibitors can be used in any order or combination by the student, providing the flexibility for a number of different experiments.



Students use pedigree analysis to study the inheritance of genes for human genetic disorders and RFLP analysis to study recombination in humans. Using RFLPs as genetic markers, students search a simulated pedigree database to obtain recombination data that allows them to determine the location of human genes on chromosomes.



Students investigate principles of population ecology by manipulating various attributes of three bird species: two competing sparrows and a hawk predator. Users can vary initial population numbers, clutch size, life span, competition coefficients, predation rates and resource availability. This lab can be used to investigate ecological principles such as carrying capacity, extinction, overpopulation, competitive coexistence, competitive exclusion, predator-prey cycles, and predator-mediated coexistence.



Students track changes in the genotype and allele frequencies in populations of moths to study population genetic principles such as Hardy-Weinberg ratios, genetic drift, natural selection, migration, assortative matiing, and population bottlenecks. Experiments can be conducted by manipulating parameters such as the initial genotype frequencies, the carrying capacity of each population, the rates of predation on the moth phenotypes, the migration rates among populations, mating preferences among phenotypes, and the frequency of population "crashes."



Students create simple RNA sequences and then translate these in a virtual "in vitro" cell-free system. From the proteins produced by the translation mix, students determine the characteristics of the genetic code and assign codons to amino acids. This lab was modeled after some of the original experiments used to determine the genetic code.



Biology Simulations in MERLOT sorted by sub-categories:

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Open Text BC Database of Peer Reviewed OER Labs in Biology:

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The lists free biology resources designed to support remote biology education.

National Science Digital Library (NSDL):

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The - provides high quality online educational resources for teaching and learning, with current emphasis on the sciences, technology, engineering, and mathematics (STEM) disciplines–both formal and informal, institutional and individual, in local, state, national, and international educational settings. The NSDL collection contains structured descriptive information (metadata) about web-based educational resources held on other sites by their providers. These providers have contribute this metadata to NSDL for organized search and open access to educational resources via this website and its services.

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MERLOT Virtual Labs is a service of the MERLOT  program. Concept and design by: MERLOT and CSULB Center for Usability In Design and Accessibility © 2020 California State University, Long Beach - MERLOT Accessibility Questions? Email  [email protected]

IMAGES

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  5. Isolate DNA from Plant Material

    Procedure. Take the available plant material and grind it in the mortar. Treat the material with cellulase to break down the cell wall of the plant cells. Next, treat it with protease to hydrolyze the peptide bonds of proteins in the plant material. In other words, the enzyme removes the histone proteins which are intertwined with the DNA.

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    Take the collected roadside soil and garden soil into two different beakers containing water. Mix the test tubes with the soil solution slowly. Now into a clean and dried two test-tube, arrange a funnel spread covered with a filter paper. Now gently pour the soil solutions into the test tubes separately. Let the water to completely filter off ...

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    CBSE Class 12 Biology Practicals 2023-24. Max. Marks: 30. Prepare a temporary mount to observe pollen germination. Study the plant population density by quadrat method. Study the plant population frequency by quadrat method. Prepare a temporary mount of onion root tip to study mitosis. Flowers adapted to pollination by different agencies (wind ...

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