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How to Get Good Marks in Biology Class 12?

Each subject has its significance; Mathematics is like solving a puzzle game for some students, and Science is an exciting subject full of amazing facts and astonishing discoveries. Biology serves as a stepping stone for all who want to do their work in Medicine. All who wish to become a doctor in the future must have a solid foundation in this regard. 

Biology for the CBSE Class 12th has 100 marks where the theory contains 70 marks, and practical is for 30 marks. Most of the questions asked in the AIPMT entrance exam are from biology class 12 syllabus. You will also find the distribution of marks for each biology study unit depending on how the question paper will be designed in the board examination.

Here are some important things that you should keep in mind before starting your preparation for the CBSE Class 12 Biology.

Understand the Question Paper Format

Understand the question paper pattern before you start your revision. Knowing the pattern will save you valuable time in the examination. An overview of the question paper is given below:

Section Name Question Type No. of Questions Marks
Section –  A Very Short Answer 5 Questions  5 × 1 = 5
Section – B Short Answer – I 7 Question 7 × 2 = 14
Section – C Short Answer – II 9 Question  12 × 3 = 36
Section – D Case-Based Short Answer Type 3 Questions 3(1+1+1) × 3 = 9
Section – E Long Answer 3 Question 3 × 5 = 15

CBSE Class 12 Biology Marks Weightage Distribution

Unit Marks Distribution
  1. Reproduction
  1. Genetics Evolution
  1. Biology in Human Welfare
  1. Biotechnology and its Application
  1. Ecology and Environmental Issue
Total 70

Best Tips to get 100 marks in Class 12 Biology

  • Make a Study Plan

It is one of the most important tips for Class 12 Biology preparation, as it is also very important to prepare a good study plan. Try to make the proper detailed study plan and stick to it with dedication.

Study schedules help to teach discipline by organizing your whole day. This simple step will save you time.

Make a study plan that includes time for assignments and hobbies, including breaks in the timetable.

  • Choose Study Material Wisely

The NCERT Book for class 12 Biology is one of the best textbooks students need to read first. You can use reference books but first, complete the NCERT books and Ncert solution for class 12 biology. Reference books will help strengthen basic concepts and help deal with complex problems. Below is a list of reference books for CBSE 12th Biology, students can follow:

Important books for CBSE Class 12 Biology Author / Publisher
NCERT Class 12 Biology Book NCERT
Pradeep’a A Textbook for Biology Class 12 P.S Dhami
S.Chand’s Biology for Class 12 B.P Pandey
CBSE Biology Chapterwise Solved Papers class 12th Arihant Expert
  • Clear Your Basic First

This is an important tip for CBSE Class 12 Preparation for biology to work on your basics. It is essential to examine the basics before moving on to advanced and complex topics. Try to pay more attention to the basics. It is common for students to face problems in topics that are complex but understanding them from the basics will help them to solve quickly.

Starting with Ncert solutions books for the CBSE class of 12th Biology and moving to other references would be suitable for students. Strengthening and understanding the basics will help board exams and various entrance exams. Don’t forget to practice Important questions for class 12 biology.

  • Make Short Notes

It is important to make short notes so that you can quickly revise and remember complex concepts quickly. The notes are short versions of the broader topic as the CBSE 12th Biology paper is very theoretical. It will be more powerful to read notes than to read someone else. Preparing biology notes for class 12 Will help you at the time of revision.

It is also helpful to make flashcards to remember the terminology, chemical equations, and formulas as they are mathematical, and students often forget them. Taking notes will save you a lot of time as it will be easier always to revise things quickly.

  • Revise Regularly

You should understand that Revision is the key to success. With regular revision, students can keep track of all the essential points and clearly remember the concepts during the board examination. Prioritize your study and list heigh weightage chapters and important topics. While revising, prioritize high-weightage topics. 

  • Draw Neat and Clean Diagram whenever Needed

The question may have a big theoretical answer, but this can be reduced to a simple descriptive answer by drawing the required diagram (for example – DNA structure, Molecular biology, reproductive system, etc.).

When answering three marks and five marks questions, include the diagram if necessary and write the theory in points.

  • Practice previous year question papers and sample papers

CBSE has released a sample of the Class 12 Biology Examination paper and marking program. Students can click here to practice for the CBSE Class 12 Biology sample paper. After practicing the paper sample, students can look at the marking system to determine their score and judge how well they prepare for the test. Once you complete the syllabus starts practicing CBSE class 12 biology sample papers.

Finally, there is no shortcut to success. You must practice with the sample papers and 10-year question papers issued by CBSE to obtain full marks in the Biology Class XII 2020 exam.

  • Time Management

Time Management during the CBSE Class 12 Biology board examination is necessary in order to complete the question paper on time. Divide your time strategically by setting a deadline for each phase. Don’t get caught up in any questions.

Planning will keep you organized and eliminate stress from your mind. Here’s how to put one together for use with your time for study effectively in class 12th:

  • Section A is small: 10 Minutes
  • Section B has seven questions: 30 Minutes
  • Section C, 12 Questions: 50 Minutes
  • Section D: 30 Minutes
  • Section E: 1 Hour


The learning style of Biology subject is completely different from other subjects. Therefore, it is essential to prepare Biology with a fresh and focused mind. It will be easier to get good marks in the board examination and future examinations. Just focus on your basics, not mug up the biology subject. Once you have studied concepts, practice CBSE Class 12 Biology Previous Year Question Papers


Is NCERT enough for CBSE Class 12 Biology?

Yes. NCERT Books are enough for CBSE Class 12 Biology board exam. The only problem with NCERT is, it’s brief. You should follow some other reference books to know how to make a story on one NCERT line.

Which is the easy chapter class 12 biology?

Microbes in Human Welfare – Chapter 10 of NCERT Class 12 Biology is considered one of the easiest and scoring chapters.

How many chapters are there in CBSE Class 12 Biology?

Teachers use these books to teach in schools and in preparing for mid-term and final exam questions. The NCERT Class 12 Biology textbooks have 10 chapters.

How do you get 95+ marks in Biology class 12?

Do not pressure or waste your energy. get enough rest. Study with an open mind and focus on your goal. Be confident and patient and keep getting used to it and you will achieve success.

How many hours should a student study in class 12?

Each student has a different pace of learning, learning style, and ability to grasp concepts. However, the ideal amount of time you should invest in your studies is 7-8 hours a day. Studying for 7-8 hours every day is enough.

Falak Arya

I'm Flak Arya and I am a Teacher working for Entrancei (PrepPro) one of the best online education platform in India. I am passionate to teaching students and writing and have been in this field for 10+ years.

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