CBSE Class 12 Biology MCQs with Answers

Overview

CBSE Class 12 Biology MCQs – Essential Practice for Boards and Competitive Exams

Class 12 Biology is a crucial subject for students preparing for both school-level and higher-level competitive exams. Our CBSE Class 12 Biology MCQs with answers are carefully designed to provide chapter-wise practice based on the NCERT syllabus, ensuring accuracy and relevance. These questions are highly beneficial for CBSE and ICSE board exams, particularly for the objective-type sections that test conceptual clarity.

In addition to board exams, these MCQs are indispensable for national-level entrance tests such as NEET, CUET, CSIR-NET, GATE, and DBT-BET JRF. Solving a wide range of objective questions helps students build speed, accuracy, and strong conceptual understanding across key topics like reproduction, genetics, evolution, biotechnology, ecology, and human health.

Beyond the Indian education system, these MCQs are equally valuable for international medical and biology-related exams including USMLE, PLAB, AMC, BMAT, IMAT, SAT Biology Subject Test, and GRE Biology Subject Test. Students aspiring for higher studies or medical licensing abroad will find this question bank extremely useful for structured preparation.

Each MCQ is supported with a detailed answer and explanation, making it easier to learn, revise, and strengthen weak areas. These resources are tailored for online learning, tutoring support, and self-study, making them a versatile tool for exam readiness.

By consistently practicing with our Class 12 Biology MCQs, students can improve confidence, problem-solving ability, and exam performance. Whether aiming for school boards, competitive medical entrances, or international exams, this collection ensures comprehensive preparation and success.

Curriculum

13 Sections
106 Lessons
Lifetime

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Chapter 1 - Sexual Reproduction in Flowering Plants - MCQs
Chapter 1 – Sexual Reproduction in Flowering Plants covers flower structure, pollination, fertilization, seed and fruit formation, and special modes like apomixis and polyembryony. NCERT-based MCQs from this chapter are crucial for CBSE Class 12 exams and highly important for NEET UG preparation.
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Chapter 2 - Human Reproduction - MCQs
Chapter 2 – Human Reproduction covers male and female reproductive systems, gametogenesis, menstrual cycle, fertilisation, pregnancy, placenta, parturition, and lactation. NCERT-based MCQs from this chapter are vital for CBSE Class 12 exams and highly important for NEET UG preparation.
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Chapter 3 - Reproductive Health - MCQs
Chapter 3 – Reproductive Health focuses on the importance of reproductive health, birth control methods, prevention of STDs, medical termination of pregnancy (MTP), infertility, and assisted reproductive technologies (ARTs). NCERT-based MCQs make this chapter vital for CBSE Class 12 and NEET UG exams.
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Chapter 4 - Principles of Inheritance and Variation - MCQs
Chapter 4 – Principles of Inheritance and Variation (Class 12 Biology, NCERT) explains Mendel’s laws, deviations like codominance and polygenic inheritance, linkage, crossing over, sex determination, and genetic disorders. MCQs from this chapter are vital for CBSE & NEET UG exams.
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Chapter 5 - Molecular Basis of Inheritance - MCQs
Chapter 5 – Molecular Basis of Inheritance explains DNA and RNA structure, replication, transcription, translation, genetic code, lac operon, genome projects, and DNA fingerprinting. MCQs from this NCERT-based chapter are crucial for CBSE Class 12 Board exams and NEET UG preparation.
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Chapter 6 - Evolution - MCQs
Chapter 6 – Evolution (Class 12 Biology, NCERT) covers the origin of life, evidences of evolution, Darwin’s theory, Hardy–Weinberg principle, gene flow, genetic drift, adaptive radiation, and human evolution. MCQs from this chapter are vital for CBSE Boards & NEET UG exam prep.
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Chapter 7 - Human Health and Diseases - MCQs
Chapter 7 – Human Health and Diseases (Class 12 Biology, NCERT) covers pathogens, human diseases, immunity, vaccines, cancer, HIV/AIDS, and drug abuse. MCQs from this chapter are crucial for CBSE Boards and NEET UG, helping students master exam-focused concepts through practice.
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Chapter 8 - Microbes in Human Welfare - MCQs
Chapter 8 – Microbes in Human Welfare (Class 12 Biology, NCERT) explains the role of microbes in food processing, industry, sewage treatment, biogas, antibiotics, biofertilizers, and biocontrol. MCQs from this chapter are highly important for CBSE Boards & NEET UG preparation.
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Chapter 9 - Biotechnology - Principles and Processes - MCQs
Chapter 9 – Biotechnology: Principles and Processes (Class 12 Biology, NCERT) explains genetic engineering, rDNA tools, cloning vectors, competent hosts, gene transfer methods, bioreactors, and product recovery. MCQs from this chapter are vital for CBSE Boards & NEET UG exams.
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Chapter 10 - Biotechnology and its Applications - MCQs
Chapter 10 – Biotechnology and Its Applications (NCERT Class 12 Biology) covers key topics like human insulin, gene therapy, vaccines, stem cell technology, Bt crops, GM crops, transgenic animals, biosafety issues, biopiracy, and patents. Crucial for CBSE Boards & NEET UG exams.
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Chapter 11 - Organisms and Populations - MCQs
Population interactions - mutualism, competition, predation, parasitism; population attributes - growth, birth rate and death rate, age distribution. (Topics excluded: Organism and its Environment, Major Abiotic Factors, Responses to Abiotic Factors, Adaptations)
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Chapter 12 - Ecosystem - MCQs
Chapter 12 – Ecosystem (NCERT Class 12 Biology) explains components, productivity, decomposition, energy flow, food chains, food webs, ecological pyramids, succession, and nutrient cycles. Crucial for CBSE Board exams & NEET UG with NCERT-based MCQs and revision notes.
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Chapter 13 - Biodiversity and Its Conservation - MCQs
Chapter 13 – Biodiversity and Its Conservation (Class 12 Biology, NCERT) explores the concept, importance, patterns, and loss of biodiversity. It covers hotspots, extinction, endangered species, Red Data Book, sacred groves, and protected areas. Crucial for CBSE boards and NEET UG prep with MCQs.
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Course Features

Lectures 106
Quiz 0
Duration Lifetime access
Skill level All levels
Language English
Students 0
Assessments Yes

CBSE Class 12

CBSE Class 12 Biology MCQs

Overview

Curriculum

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