Class 12 Biology MCQs | Everything You Need

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Score better in Biology with these CBSE Class 12 MCQs, ready for 2026-27. Built chapter by chapter, they help Class 12 students get comfortable with the current exam pattern and sharpen problem-solving.

How Biology MCQs Help Class 12 Students

  • Answers are explained clearly for every Biology question, so the reasoning actually makes sense.
  • Matched closely to the 2026 CBSE Biology textbook and current guidelines.
  • Includes Class 12 Assertion-Reasoning, Case-based, and Fill-in-the-blanks formats, all built for Biology.
  • Neatly organized by chapter, so you can test your grip on each Biology topic one at a time.

Class 12 Biology Chapter-wise MCQ Question Bank

Access the latest 2026-27 question sets for Biology below. These MCQs are a solid way to check your own understanding, and spot weak areas before your exams.

Chapter 01 Sexual Reproduction in Flowering Plants
Chapter 1 Sexual Reproduction in Flowering Plants MCQs Set 01
Chapter 1 Sexual Reproduction in Flowering Plants MCQs Set 02
Chapter 1 Sexual Reproduction in Flowering Plants MCQs Set 03
Chapter 1 Sexual Reproduction in Flowering Plants MCQs Set 04
Chapter 1 Sexual Reproduction in Flowering Plants MCQs Set 05
Chapter 1 Sexual Reproduction in Flowering Plants MCQs Set 06
Chapter 02 Human Reproduction
Chapter 2 Human Reproduction MCQs Set 01
Chapter 2 Human Reproduction MCQs Set 02
Chapter 2 Human Reproduction MCQs Set 03
Chapter 2 Human Reproduction MCQs Set 04
Chapter 2 Human Reproduction MCQs Set 05
Chapter 2 Human Reproduction MCQs Set 06
Chapter 03 Reproductive Health
Chapter 3 Reproductive Health MCQs Set 01
Chapter 3 Reproductive Health MCQs Set 02
Chapter 3 Reproductive Health MCQs Set 03
Chapter 04 Principles of Inheritance and Variation
Chapter 4 Principles of Inheritance and Variation MCQs Set 01
Chapter 4 Principles of Inheritance and Variation MCQs Set 02
Chapter 4 Principles of Inheritance and Variation MCQs Set 03
Chapter 4 Principles of Inheritance and Variation MCQs Set 04
Chapter 4 Principles of Inheritance and Variation MCQs Set 05
Chapter 4 Principles of Inheritance and Variation MCQs Set 06
Chapter 4 Principles of Inheritance and Variation MCQs Set 07
Chapter 4 Principles of Inheritance and Variation MCQs Set 08
Chapter 4 Principles of Inheritance and Variation MCQs Set 09
Chapter 4 Principles of Inheritance and Variation MCQs Set 10
Chapter 05 Molecular Basis of Inheritance
Chapter 5 Molecular Basis of Inheritance MCQs Set 01
Chapter 5 Molecular Basis of Inheritance MCQs Set 02
Chapter 5 Molecular Basis of Inheritance MCQs Set 03
Chapter 5 Molecular Basis of Inheritance MCQs Set 04
Chapter 5 Molecular Basis of Inheritance MCQs Set 05
Chapter 5 Molecular Basis of Inheritance MCQs Set 06
Chapter 06 Evolution
Chapter 6 Evolution MCQs Set 01
Chapter 6 Evolution MCQs Set 02
Chapter 6 Evolution MCQs Set 03
Chapter 6 Evolution MCQs Set 04
Chapter 6 Evolution MCQs Set 05
Chapter 6 Evolution MCQs Set 06
Chapter 07 Human Health and Disease
Chapter 7 Human Health and Disease MCQs Set 01
Chapter 7 Human Health and Disease MCQs Set 02
Chapter 7 Human Health and Disease MCQs Set 03
Chapter 7 Human Health and Disease MCQs Set 04
Chapter 7 Human Health and Disease MCQs Set 05
Chapter 7 Human Health and Disease MCQs Set 06
Chapter 7 Human Health and Disease MCQs Set 07
Chapter 7 Human Health and Disease MCQs Set 08
Chapter 7 Human Health and Disease MCQs Set 09
Chapter 7 Human Health and Disease MCQs Set 10
Chapter 7 Human Health and Disease MCQs
Chapter 08 Microbes in Human Welfare
Chapter 8 Microbes in Human Welfare MCQs Set 01
Chapter 8 Microbes in Human Welfare MCQs Set 02
Chapter 8 Microbes in Human Welfare MCQs Set 03
Chapter 8 Microbes in Human Welfare MCQs Set 04
Chapter 8 Microbes in Human Welfare MCQs Set 05
Chapter 8 Microbes in Human Welfare MCQs Set 06
Chapter 8 Microbes in Human Welfare MCQs Set 07
Chapter 09 Biotechnology Principles and Processes
Chapter 9 Biotechnology Principles and Processes MCQs Set 01
Chapter 9 Biotechnology Principles and Processes MCQs Set 02
Chapter 9 Biotechnology Principles and Processes MCQs Set 03
Chapter 9 Biotechnology Principles and Processes MCQs Set 04
Chapter 9 Biotechnology Principles and Processes MCQs Set 05
Chapter 9 Biotechnology Principles and Processes MCQs Set 06
Chapter 9 Biotechnology Principles and Processes MCQs Set 07
Chapter 10 Biotechnology and its Applications
Chapter 10 Biotechnology and its Applications MCQs Set 01
Chapter 10 Biotechnology and its Applications MCQs Set 02
Chapter 10 Biotechnology and its Applications MCQs Set 03
Chapter 10 Biotechnology and its Applications MCQs Set 04
Chapter 10 Biotechnology and its Applications MCQs Set 05
Chapter 10 Biotechnology and its Applications MCQs Set 06
Chapter 10 Biotechnology and its Applications MCQs Set 07
Chapter 10 Biotechnology and its Applications MCQs Set 08
Chapter 10 Biotechnology and its Applications MCQs Set 09
Chapter 10 Biotechnology and its Applications MCQs Set 10
Chapter 11 Organisms and Populations
Chapter 11 Organisms and Populations MCQs Set 01
Chapter 11 Organisms and Populations MCQs Set 02
Chapter 11 Organisms and Populations MCQs Set 03
Chapter 11 Organisms and Populations MCQs Set 04
Chapter 11 Organisms and Populations MCQs Set 05
Chapter 11 Organisms and Populations MCQs Set 06
Chapter 11 Organisms and Populations MCQs Set 07
Chapter 12 Ecosystem
Chapter 12 Ecosystem MCQs Set 01
Chapter 12 Ecosystem MCQs Set 02
Chapter 12 Ecosystem MCQs Set 03
Chapter 12 Ecosystem MCQs Set 04
Chapter 13 Biodiversity and Conservation
Chapter 13 Biodiversity and Conservation MCQs Set 01
Chapter 13 Biodiversity and Conservation MCQs Set 02
Chapter 13 Biodiversity and Conservation MCQs Set 03
Chapter 13 Biodiversity and Conservation MCQs Set 04
Chapter 13 Biodiversity and Conservation MCQs Set 05
Chapter 13 Biodiversity and Conservation MCQs Set 06
Chapter 13 Biodiversity and Conservation MCQs Set 07
Chapter 13 Biodiversity and Conservation MCQs Set 08
~ MCQs Class 12 Biology (Old Chapters)
Chapter 16 Environmental Issues MCQs Set 01
Chapter 16 Environmental Issues MCQs Set 02
Chapter 16 Environmental Issues MCQs Set 03
Chapter 16 Environmental Issues MCQs Set 04
Chapter 1 Reproduction in Organism MCQs Set 01
Chapter 1 Reproduction in Organism MCQs Set 02
Chapter 1 Reproduction in Organism MCQs Set 03
Chapter 9 Strategies for Enhancement in Food Production MCQs Set 01
Chapter 9 Strategies for Enhancement in Food Production MCQs Set 02
Chapter 9 Strategies for Enhancement in Food Production MCQs Set 03
Chapter 9 Strategies for Enhancement in Food Production MCQs Set 04

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Free study material for Biology

CBSE Class 12 Biology MCQs

Biology matters a lot in Class 12, forming the base for what comes next. Since 2026-27 exam patterns now include more MCQs, regular practice pays off.

Benefits of CBSE 2026-27 MCQs for Class 12 Biology

  1. Builds confidence: daily practice with answered Biology MCQs helps confidence grow steadily, not all at once.
  2. Useful for competitive exams: many entrance tests also lean on MCQ-style questions, so this practice carries over.
  3. Sharpens skills: regular MCQ practice improves problem-solving, analytical thinking, and time management together.
  4. Matches exam patterns: CBSE and other boards now lean more on MCQs, so practicing regularly builds real familiarity with the format.
  5. Quick revision: with limited time before exams, chapter-wise MCQs let you revise a lot of ground quickly.

How to Approach Class 12 Biology MCQs

  1. Try our mock tests for Biology to simulate real exam conditions at home.
  2. Review any wrong answers afterward, and understand why - that's how mistakes stop repeating.
  3. Read the question and all the options fully before choosing - the first answer that seems right isn't always correct.
  4. Try answering in your head first, based on what you remember, then check it against the given options.

Common Mistakes to Avoid While Solving MCQs

  1. Spending too long on one question - if you're stuck, move on and come back to it later.
  2. Skipping details in the question - small missed words often lead to wrong answers. Read carefully.
  3. Not checking every option - the obvious answer isn't always correct. Review all choices before deciding.

How to Download Chapter-wise Biology MCQs for Class 12

  1. Click the chapter link above, matched to the latest NCERT textbook for your class and subject.
  2. Scroll down to find the "Download PDF" button.
  3. Save the file to your device from the page that opens.
  4. All PDFs here are free to download.

These Class 12 Biology MCQs are built to strengthen your understanding, sharpen problem-solving, and help you do well in exams. With chapter-wise links, free PDFs, and teacher tips, this page is a solid place to prepare from.

FAQs

How much weightage do MCQs have in the CBSE Class 12 Biology exam?

For the 2026-27 session, MCQs and objective-type questions carry around 20% weightage. CBSE has introduced 30% competency based questions as MCQs and they are important part of the Class 12 Biology paper.

Where can I access chapter-wise Biology MCQs for Class 12 with answers?

You can access the latest chapter-wise MCQs for Class 12 Biology for free from StudiesToday.com. All questions are based on the latest syllabus and current academic year.

Are Assertion Reasoning and Case Study MCQs included for Class 12 Biology?

Yes, our Biology practice bank includes the new pattern of Assertion Reasoning and Case Study based MCQs. They have been designed to test the analytical skills of Class 12 students.

How does practicing Biology MCQs help in scoring full marks?

Solving Class 12 Biology MCQs regularly improves speed and accuracy as these are objective questions can get you 100% marks if your understanding of the topic is clear.

Can I access these Biology MCQs on mobile for quick revision?

Yes, all Class 12 Biology MCQs and answers are accessible on any device at your convenience.

Is there any charge for Class 12 Biology MCQ online tests?

No, all Biology Multiple Choice Questions (MCQs), practice papers, and solutions for Class 12 are available for free for students to get more marks school exams.