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Important Questions for CBSE Class 12 Biology (2023-24)

Last updated date: 28th Nov 2023
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CBSE Class 12 Biology Chapterwise Important Questions - Free PDF Download

Class 12 Biology has 16 important chapters covering various important topics related to human physiology evolution, diseases, genetics, organisms, populations, etc. To study these chapters well and to learn how to answer fundamental questions, download and practice solving Class 12 Biology Term 2 Important Questions with Solutions. There are individual files available for all chapters to download along with solutions to practice.

Here we present the list of important questions for CBSE Class 12 Biology. Students appearing for the Biology Board Exams should check out this post. All the questions are prepared by the expert teachers at Vedantu according to the latest syllabus. All the questions given in this article are relevant for preparing for the Class 12 Biology Class 2023 CBSE Board Exam.

The questions referred to in this article are based on question papers, sample papers, and NCERT textbooks from the latest year. When studying for the upcoming Class 12th Biology Examination 2023, students can find these questions helpful. For students who are preparing for medical entrance exams, like AIIMS, NEET, etc., biology is also an important subject. Deep knowledge and a thorough understanding of this subject are needed for students who aspire to excel in the board exams. Therefore the important questions for CBSE Biology Class 12 help students prepare for their examinations.

Download CBSE Class 12 Biology Important Questions 2023-24 PDF

Also, check CBSE Class 12 Biology Important Questions for other chapters:

Competitive Exams after 12th Science

CBSE Class 12 Biology Important Questions – Free PDF Download

Free PDF download of Important Questions for the CBSE Class 12 Biology prepared by expert biology experts at Vedantu from the latest NCERT books. Practising Class 12 Biology Important questions will help in your CBSE Biology Board Exams scoring more marks. Download important questions for CBSE class 12 biology pdf from Vedantu.

Benefits of the CBSE class 12 Biology Important Questions

Reasons why important questions from the Biology Class 12 CBSE board will benefit the students in their board examinations:

  • With answers, all the important questions for Class 12 Biology are available so that students learn how to solve them.

  • The questions are created by keeping the latest syllabus in mind.

  • All these important questions will help the students prepare for Biology board exams in the best possible way.

  • These questions are made by a team of expert teachers who have many years of experience.

Important Questions for Class 12 Biology CBSE Board

Solutions for all the chapters in class 12 Biology are available for free to download on our website and app. These solutions will help the student solve all of their doubts related to Biology.  Solutions are available for all the chapters right from the first chapter, Environmental Problems, Reproduction in Organism, to Chapter 16. In these chapters, many topics need to be covered, and one of the only ways to keep them in your mind is to practice problems at the end of each chapter.

Through years of experience our teachers know how exam paper is set, this way they can help students to focus on important parts. The important questions for Class 12 Biology for the CBSE (NCERT) board are broken down so that the problems are more likely to occur in the examinations.

Importance of CBSE Important Questions for Class 12 Biology Board Exam

The chapters have been handpicked by the CBSE board to develop the conceptual foundation among the students. These chapters cover the different crucial topics of Biology such as evolution, the principle of inheritance, reproduction, food production, population, human physiology, microbiology, etc. Hence studying all the chapters are very important for students who want to pursue a science course related to biology later.

To make the preparation stronger, students choose to solve and practice Important Questions for Class 12 Biology Board Exam compiled by the experts. These questions are designed following the CBSE syllabus so that all the concepts in a chapter can be covered accordingly. The question pattern followed in the formation of these questions will also cover the marking scheme and exam format followed for this subject by the board.

Solving and practising these questions at home will help students to realise the probable questions that might be asked in the board exams. These questions, thus, will broaden the practice and preparation sessions of the students and will help them to score more in the exams.

Advantages of CBSE Important Questions for Class 12 Biology Board Exam

  • By solving the Class 12 Biology Important Questions with Answers PDF, you will get to know other questions and question formats followed by the CBSE board. Hence, you will be aware of such questions beforehand and will be able to solve them faster.

  • Resolve doubts using the solutions and figure out which part of the chapters need more attention during your study sessions. These questions can be used as the ideal tool for assessing your preparation level. Compare your answers to the solutions and find the gaps that need to be filled in the syllabus.

  • Follow the answering format of the solutions given with these important questions. These answering formats are formulated according to the CBSE guidelines. Following these formats will aid you to answer fundamental questions precisely and score more in the exams.

Download Class 12 Biology Important Questions with Answers PDF 2023

Download the Class 12 Biology important question with answers PDF to practice. Solve these questions based on your curricular need. Once you are done with a chapter and its exercises, proceed to solve these questions and take a step ahead with your preparation. Follow the solutions and become better at answering such questions to ace the exams. 

CBSE Class 12 Biology Weightage 2023-24 








Genetics and Evolution



Biology and Human Welfare



Biotechnology and its Applications



Ecology and Environment





CBSE Class 12 Biology Study Materials

Other CBSE Class 12 Important Questions Related Links

FAQs on Important Questions for CBSE Class 12 Biology (2023-24)

1. How will the Class 12 Biology Board Exam Paper Help Score Well?

Ans: In any subject, scoring well requires daily practice and commitment. Students will study biology and score well by referring to a lot of questions in the Class 12 board examination paper. First of all the NCERT textbook and in-between exercise questions should be prepared by the students. On Vedantu students can access free NCERT solutions for class 12 Biology on our app and website.  Once they gain confidence in this for a better understanding of the chapters, they can refer to Vedantu's extra questions. Students can also learn questions on Vedantu's website from sample papers and previous year papers. They can register themselves on the site in case of any doubt and take full advantage of the masterclasses from experienced tutors.

2. What are the Benefits of Biology Class 12th Important Questions?

Ans: It takes a great deal of focus and dedicated preparation in order to perform well in the Class 12 Biology paper. In order to prepare for an effective exam, it is crucial to study some additional questions for each chapter. Students must study each chapter thoroughly and practice from Vedantu’s curated set of important questions for Class 12 Biology. It helps in successful revision during the exams and as a result, improves the performance in the exam.

3. Name the chapters given in the NCERT book of Class 12 Biology.

Ans: The chapters of the NCERT Biology book of Class 12 are as follows:

  • Chapter 1–Reproduction in Organisms

  • Chapter 2–Sexual Reproduction in Flowering Plants

  • Chapter 3–Human Reproduction

  • Chapter 4–Reproductive Health

  • Chapter 5–Principles of Inheritance and Variation

  • Chapter 6–Molecular Basis of Inheritance

  • Chapter 7–Evolution

  • Chapter 8–Human Health and Disease

  • Chapter 9 –Strategies for Enhancement in Food Production

  • Chapter 10–Microbes in Human Welfare

  • Chapter 11–Biotechnology: Principles and Processes

  • Chapter 12–Biotechnology and its Applications

  • Chapter 13–Organisms and Populations

  • Chapter 14–Ecosystem

  • Chapter 15–Biodiversity and Conservation

  • Chapter 16–Environmental Issues

4. What is the blueprint or the marking scheme of Class 12 Biology?

Ans: According to CBSE, the Class 12 Biology Board Examination is divided into two parts:

  1. Theoretical

  2. Practical

The practical examination is for 30 marks. The questions asked in this examination are based on experiments done in the lab.

The blueprint of the theoretical exam is given below: The theory paper will be 70 marks and the time duration is three hours.

  • Part A – 14 questions (one mark each)

    • two questions (case study based)

  • Part B –nine questions (two marks each)

  • Part C –five questions (three marks each)

  • Part D – three questions (five marks each)

5. What is the distribution of marks in Class 12 Biology?

Ans: According to the guidelines of the CBSE, the marks distribution done for the chapters of Class 12 Biology is given below:

  • Unit I. Reproduction–14 marks

  • Unit II. Evolution and Genetics – 18 marks

  • Unit III.Biology and Human Welfare – 14 marks

  • Unit IV.Biotechnology and its Applications – 10 marks

  • Unit V. Ecology and Environment – 14 marks

As you can see all the units are of high weightage therefore all the chapters are important from an examination point of view. Students have to learn and understand the chapters thoroughly if they wish to score good marks in the Class 12 Biology Board Examination.

6. How can I top in the Class 12 Biology exam?

Ans: For a student, Class 12 Board Examinations are very important. It is difficult for some students to prepare for the Class 12 Biology Board exam. If they want to top in Class 12 Biology exam then they have to study hard. They should prefer the NCERT book for understanding the concepts of the chapters. Solving NCERT questions will help them to know the chapter in a better way. Previous year’s question papers will assist them in knowing about the type of questions asked in the exam.

If they want to practice important questions of all the chapters then they can use the go to  Vedantu’ official website. These solutions are available at free of cost on Vedantu( and mobile app.

7. How to make a study plan for Class 12 Biology?

Ans: Here is the better study plan for Class 12 Biology:

  • Build a timetable. This will help you to get time to focus on every chapter.

  • Do not leave any chapter for the end. 

  • Focus on the NCERT book. Go thoroughly through this book for a better understanding of the chapters.

  • To get an idea about the exam pattern, practise previous years question papers.

  • Making notes is a must. These will help you at the time of revision.

  • Clarify your doubts so that you do not face any problems while solving questions.