CBSE Class 12 Biology Practical Syllabus 2021-2022 Exam


Can I get 30/30 in CBSE Biology Class 12 practical exam?” Many students wonder the same. Our answer to this query is a definite yes. Every student can achieve full marks in the practical examination. But one needs to prepare for it dedicatedly. The first step to good preparation for the practical exam is to know the practical syllabus for CBSE Class 12 Biology. The syllabus includes the marking scheme, list of experiments and all other details related to the practical examination that might be useful for your preparation. In this post, we have given complete information about how to download the latest Class 12 Biology Practical Syllabus and make use of it. 


The AskIITians team has been working for more than fifteen years now so that students learn concepts of Maths and Science with ease. Our team has not only prepared effective online CBSE courses but have also taken care of your every learning requirement. We have provided the latest syllabus for Class 12 Biology practicals here in a downloadable format. You can check the syllabus and start preparing for your practicals right away. If you need any kind of assistance in understanding the purpose and procedures of the practical examination, you can straight away connect with our experts. 


Topic-wise Class 12 Biology Practical Syllabus 2021-22 


As per CBSE Class 12 Biology practical syllabus 2021-22, students have to perform experiments from the list given by CBSE. The list of experiments is divided into a few categories like major experiments, minor experiments, slide preparation and spotting or careful observation. Students have to log their experiments in a practical file and also have to work on an investigatory project. If you want suggestions on which project you must choose, our experts will be happy to help. But first, take a look at some of the experiments included in the Class 12 Biology Practical Syllabus. 


  • Studying water samples collected from different water bodies for pH, clarity and presence of living organisms
  • Studying the process of mitosis using an onion peel
  • Using quadrant method to study plant population density
  • Isolating DNA from plants like spinach, papaya et cetera 
  • Commenting upon the morphological adaptations of two plants and two animals found in xeric conditions using models or virtual images 
  • Observe pollen germination on stigma
  • Observe the process of meiosis in onion bud
  • Use permanent slides, virtual images, models to study common disease-causing organisms 


CBSE Class 12 Biology Practical Exam Marking Scheme 


One must take a look at the evaluation scheme given in the CBSE Class 12 Biology Practical Syllabus. This helps in understanding how many experiments you need to perform in the exam and how your knowledge will be assessed. We have included the latest evaluation scheme by CBSE in the table given below. You can see that the practical exam of Class 12 Biology is of 30 marks which are further divided based on different tasks.  You will be given a major and a minor experiment to perform in the exam. Along with this, you have to perform slide preparation and spotting. Your practical record, viva and project report also play an important role in getting you full marks. 


CBSE Class 12 Biology Practical Examination Marking Scheme

Duration of practical examination

3 Hours

Maximum Marks

30 Marks

One Major Experiment 5, 6, 8, 9


One Minor Experiment 2, 3, 4 


Slide Preparation 1, 7




Practical Record + Viva Voce


Investigatory Project + Viva Voce



Total 30 Marks 


Class 12 Biology Practical Syllabus FAQs


#1 How to prepare for CBSE Class 12 Biology practical examination? 


Step 1: Take note of the CBSE Class 12 Biology Practical Syllabus and the list of experiments to be done. 

Step 2: Make sure you understand the theoretical concepts discussed in the practical experiments. 

Step 3: Take note of the procedures of the experiment and make sure you have completed your practical file. It should be signed by your teacher. 

Step 4: Make sure you understand concepts mentioned in spotting and slide preparation experiments so that you can state your comments clearly. 

Step 5: Prepare your project and viva questions thoroughly 

Step 6: The practical exam viva could be based on theory, principle, concept, apparatus, materials, chemicals required, procedure, precautions, sources of error etc 


#2 What are the units of the Class 12 Biology syllabus? 


CBSE Class 12 Biology syllabus 2021-22 includes 5 units namely: Unit 1: Reproduction, Unit 2: Genetics and Evolution, Unit 3: Biology and Human Welfare, Unit 4: Biotechnology and Its Applications and Unit 5: Ecology and Environment. 


#3 How can askIITians help in preparing for CBSE Class 12 Biology? 


Whether it be the theory examination or the practical examination, askIITians can help you perform well and achieve full marks. We have created a range of study resources for CBSE Class 12 Biology which includes live classes, video lectures, assignments, chapter tests, study notes, mock tests, previous year papers and more. 


#4 How to prepare for CBSE Class 12 Biology practical exam viva? 


In viva, the examiner will ask you a few questions related to any of the theoretical concepts and practical experiments of Biology Class 12. All they want to test is whether you have knowledge of the subject and how well you can apply your concepts. If you want to prepare well for the viva make sure all your concepts are clear. Read NCERT carefully and be prepared to answer confidently. 



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