Biology MCQ (Multiple Choice Questions) – Class 12

Biology Class 12 MCQ - Multiple Choice Questions and Answers

Our 1000+ multiple choice questions and answers (MCQs) on "Biology - Class 12" (along with 1000+ MCQs on "Biology - Class 11") focus on all areas of Biology covering 200+ topics. One can read MCQs on Biology Class - 11 here. These topics are chosen from a collection of the most authoritative and best reference books on Biology. One should spend 1 hour daily practicing these MCQs for 2-3 months to learn and assimilate Biology subject comprehensively. This way of systematic learning will prepare anyone easily for Biology - Class 12 exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications.

Biology - Class 12 Multiple Choice Questions Highlights

- 1000+ Multiple Choice Questions & Answers (MCQs) in Biology - Class 12 with a detailed explanation of every question.
- These MCQs are organized chapterwise and each Chapter is futher organized topicwise.
- Every MCQ set focuses on a specific topic of a given Chapter in Biology - Class 12 Subject.

Who should Practice Biology - Class 12 MCQs?

– Students who are preparing for various school tests such as unit-tests, term-tests, semester tests, half-yearly and yearly tests and examinations on Biology - Class 12.
- Students who are preparing for Online/Offline Tests/Contests in Biology for class 12.
– Students who wish to sharpen their knowledge of Biology.
– Students who are studying in CBSE, ICSE, IGCSE schools as well as various State Board schools.
– Students who are preparing for competitive examinations such as NTSE, Olympiad, etc for class 12.
– Students who are preparing for Central board examinations in Biology namely CBSE, ICSE, and NIOS Board.
– Students who are preparing for State board examinations in Biology such as PUC, Intermediate exams, etc.
– Students who are preparing for medical entrance examinations like NEET, AIIMS, JIPMER & SAT Exams in Biology.

Biology - Class 12 Chapters

Here's the list of chapters on the "Biology - Class 12" subject covering 100+ topics. You can practice the MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice.

1. Reproduction in Organisms

The section contains multiple choice questions and answers on organisms reproduction, asexual reproduction types, sexual and asexual reproduction, fertilisation events, pre and post fertilisation events in sexual reproduction.

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  • Reproduction in Organisms
  • Asexual Reproduction
  • Different Types of Asexual Reproduction
  • Sexual Reproduction
  • Pre-Fertilisation Events in Sexual Reproduction
  • Fertilisation Events in Sexual Reproduction
  • Post-Fertilisation Events in Sexual Reproduction
  • 2. Sexual Reproduction in Flowering Plants

    The section contains questions and answers on flowering plants sexual reproduction, microsporangium and pistil structure, pollen grain structure and its properties, megasporangium and embryo sac structure, abiotic and biotic agents of pollination, pollen-pistil interaction, double fertilisation, endosperm, monocot and dicot embryo structures, seed structure, apomixis and polyembryony.

  • Sexual Reproduction in Flowering Plants
  • Structure of Stamen
  • Structure of Microsporangium
  • Structure of a Pollen Grain
  • Properties of Pollen Grains
  • Structure of Pistil
  • Structure of Megasporangium
  • Structure of Embryo Sac
  • Pollination and Types of Pollination
  • Abiotic Agents of Pollination
  • Biotic Agents of Pollination
  • Pollen-Pistil Interaction
  • Double Fertilisation
  • Structure of Endosperm
  • Structure of Monocot and Dicot Embryo
  • Structure of Seed
  • Apomixis and Polyembryony
  • 3. Human Reproduction

    The section contains MCQs on male and female reproductive system, male accessory ducts and glands, male and female external genitalia, mammary gland structure, spermatogenesis, sperm and ovary structures, oogenesis, menstrual cycle, fertilisation, implantation, parturition, lactation, pregnancy and embryonic development.

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  • The Male Reproductive System
  • The Male Accessory Ducts and Glands
  • The Male External Genitalia
  • The Female Reproductive System
  • The Female External Genitalia
  • Structure of a Mammary Gland
  • Spermatogenesis
  • Structure of a Sperm
  • Oogenesis
  • Structure of an Ovary
  • Menstrual Cycle – 1
  • Menstrual Cycle – 2
  • Fertilisation
  • Implantation
  • Pregnancy and Embryonic Development – 1
  • Pregnancy and Embryonic Development – 2
  • Parturition and Lactation
  • 4. Reproductive Health

    The section contains multiple choice questions and answers on reproductive health problems and strategies, population stabilisation, natural birth control methods, birth control barrier methods, intrauterine devices, oral and injectable contraceptives, contraception surgical methods, contraceptive methods side effects, pregnancy medical termination, infertility and assisted reproductive technologies.

  • Reproductive Health Problems and Strategies
  • Population Stabilisation
  • Natural Birth Control Methods
  • Barrier Methods of Birth Control
  • Intrauterine Devices
  • Oral Contraceptives
  • Injectable Contraceptives and Implants
  • Surgical Methods of Contraception
  • Side Effects of Contraceptive Methods
  • Medical Termination of Pregnancy
  • Sexually Transmitted Infections
  • Infertility
  • Assisted Reproductive Technologies
  • 5. Principles of Inheritance and Variation

    The section contains questions and answers on inheritance mendels laws, one gene and two genes inheritance, punnett square, incomplete dominance and co-dominance, multiple allelism, inheritance chromosomal theory, linkage and recombination principles, polygenic inheritance, pleiotropy, sex determination, mutation, pedigree analysis, mendelian and chromosomal disorders.

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  • Mendel’s Laws of Inheritance-1
  • Mendel’s Laws of Inheritance-2
  • Inheritance of One Gene-1
  • Inheritance of One Gene-2
  • Punnett Square-1
  • Punnett Square-2
  • Incomplete Dominance
  • Co-Dominance
  • Multiple Allelism
  • Inheritance of Two Genes-1
  • Inheritance of Two Genes-2
  • Chromosomal Theory of Inheritance-1
  • Chromosomal Theory of Inheritance-2
  • Chromosomal Theory of Inheritance-3
  • Linkage and Recombination-1
  • Linkage and Recombination-2
  • Polygenic Inheritance
  • Pleiotropy
  • Sex Determination
  • Mutation
  • Pedigree Analysis
  • Mendelian Disorders
  • Chromosomal Disorders
  • 6. Molecular Basis of Inheritance

    The section contains MCQs on dna, polynucleotide chain structure, dna helix packaging, genetic material search and properties, dna replication experimental proof, transcription basics, rna types and transcription process in prokaryotes, genetic code, mutations, trna adapter molecule, translation, gene expression regulation, lac operon, human genome project, dna fingerprinting, hgp methodologies and sailent features.

  • DNA
  • Structure of a Polynucleotide Chain
  • Packaging of DNA Helix
  • The Search for Genetic Material
  • The Genetic Material is DNA
  • Properties of Genetic Material (DNA versus RNA)
  • The Experimental Proof of Replication of DNA
  • The Machinery and the Enzymes for Replication of DNA
  • Transcription Basics
  • Unit and the Gene
  • Types of RNA and Process of Transcription in Prokaryotes
  • Process of Transcription in Eukaryotes
  • Genetic Code
  • tRNA-Adapter Molecule
  • Translation
  • Regulation of Gene Expression
  • Lac Operon
  • Methodologies of HGP
  • Salient Features of HGP
  • DNA Fingerprinting
  • Mutations and Genetic Code
  • Human Genome Project
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    9. Strategies for Enhancement in Food Production

    The section contains MCQs on animal husbandry, dairy farm and poultry farm management, animal breeding, controlled breeding experiments, apiculture, pisciculture, sericulture, animals viral and bacterial diseases, plant breeding, parasitic and protozoan diseases in animals, plant tissue culture, single cell protein, plant diseases and their controls, plant diseases caused by viruses, bacteria, fungi and nematodes.

  • Animal Husbandry and Dairy Farm Management-1
  • Animal Husbandry and Dairy Farm Management-2
  • Poultry Farm Management
  • Animal Breeding
  • Controlled Breeding Experiments
  • Apiculture
  • Pisciculture
  • Sericulture
  • Viral Diseases in Animals
  • Bacterial Diseases in Animals
  • Parasitic and Protozoan Diseases in Animals
  • Plant Breeding-1
  • Plant Breeding-2
  • Plant Breeding for Disease Resistance
  • Plant Breeding for Developing Resistance to Insect Pests and for Improved Food Quality
  • Plant Tissue Culture
  • Single Cell Protein
  • Plant Diseases and their Control
  • Plant Diseases caused by Viruses and Bacteria
  • Plant Diseases caused by Fungi and Nematodes
  • 10. Microbes in Human Welfare

    The section contains multiple choice questions and answers on bioenergy, microbes, microbes in household and industrial products, sewage treatment microbes, microbes in biogas production and biocontrol agents.

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  • Bioenergy
  • Microbes
  • Microbes in Household Products-1
  • Microbes in Household Products-2
  • Microbes in Industrial Products-1
  • Microbes in Industrial Products-2
  • Microbes in Industrial Products-3
  • Microbes in Industrial Products-4
  • Microbes in Sewage Treatment
  • Microbes in Production of Biogas
  • Microbes as Biocontrol Agents
  • Microbes as Biofertilizers
  • 11. Biotechnology Principles and Processes

    The section contains questions and answers on biotechnology principles, recombinant dna technology processes, recombinant dna technology tools like restriction enzymes, cloning vectors and competent host.

  • Principles of Biotechnology
  • Tools of Recombinant DNA Technology: Restriction Enzymes
  • Tools of Recombinant DNA Technology: Cloning Vectors
  • Tools of Recombinant DNA Technology: Competent Host
  • Processes of Recombinant DNA Technology – 1
  • Processes of Recombinant DNA Technology – 2
  • Processes of Recombinant DNA Technology – 3
  • 15. Biodiversity and Conservation

    The section contains MCQs on biodiversity basics and patterns, spices number on earth, species diversity importance, biodiversity loss and causes, biodiversity conservation, in-situ and ex-situ conservations.

  • Biodiversity Basics
  • Number of Species on Earth and in India
  • Patterns of Biodiversity
  • Importance of Species Diversity to the Ecosystem
  • Loss of Biodiversity
  • Causes of Biodiversity Losses
  • Biodiversity Conservation
  • In-situ and Ex-situ Conservation
  • 16. Environmental Issues

    The section contains multiple choice questions and answers on air and water pollution and its control, biomagnification, eutrophication, solid wastes, agro chemicals and its effects, radioactive wastes, greenhouse effect, global warming, stratosphere ozone depletion and deforestation.

  • Air Pollution and its Control
  • Water Pollution and its Control – 1
  • Water Pollution and its Control – 2
  • Biomagnification and Eutrophication
  • Solid Wastes
  • Agro-Chemicals and their Effects
  • Radioactive Wastes
  • Greenhouse Effect and Global Warming
  • Ozone Depletion in the Stratosphere
  • Deforestation
  • If you would like to learn "Biology - Class 12" thoroughly, you should attempt to work on the complete set of 1000+ MCQs - multiple choice questions and answers mentioned above. It will immensely help anyone trying to crack an exam or an interview.

    Wish you the best in your endeavor to learn and master Biology - Class 12!

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    Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn | Youtube | Instagram | Facebook | Twitter