THEPRACTISEGROUND
Biology quizzes illustration

Grade 12 Biology Quizzes

Ages 16-18 years · 52 weekly quizzes · 1,300 questions

Topics: Reproduction, Genetics, Molecular Biology, Evolution, Human Health, Food Production, Microbes, Biotechnology, Ecology, Biodiversity, Environmental Issues

1
Week 1

Reproduction in Organisms - Asexual & Sexual Reproduction

25 questions

2
Week 2

Sexual Reproduction in Flowering Plants - Flower Structure

25 questions

3
Week 3

Sexual Reproduction in Flowering Plants - Pollination, Fertilisation

25 questions

4
Week 4

Sexual Reproduction in Flowering Plants - Endosperm, Embryo, Seed, Fruit

25 questions

5
Week 5

Human Reproduction - Male Reproductive System

25 questions

6
Week 6

Human Reproduction - Female Reproductive System, Menstrual Cycle

25 questions

7
Week 7

Human Reproduction - Fertilisation, Implantation, Pregnancy, Parturition

25 questions

8
Week 8

Reproductive Health - Birth Control, STDs, Infertility

25 questions

9
Week 9

Principles of Inheritance - Mendel's Laws

25 questions

10
Week 10

Principles of Inheritance - Incomplete Dominance, Co-dominance, Multiple Alleles

25 questions

11
Week 11

Principles of Inheritance - Mendel's Laws, Monohybrid & Dihybrid Cross

25 questions

12
Week 12

Principles of Inheritance - Incomplete Dominance, Co-dominance, Multiple Alleles (Blood Groups)

25 questions

13
Week 13

Principles of Inheritance - Sex Determination, Sex-linked Inheritance

25 questions

14
Week 14

Principles of Inheritance - Pedigree Analysis, Genetic Disorders

25 questions

15
Week 15

Molecular Basis of Inheritance - DNA Structure, Packaging

25 questions

16
Week 16

Molecular Basis of Inheritance - DNA Replication

25 questions

17
Week 17

Molecular Basis of Inheritance - Transcription

25 questions

18
Week 18

Molecular Basis of Inheritance - Translation (Protein Synthesis), Genetic Code

25 questions

19
Week 19

Molecular Basis of Inheritance - Regulation of Gene Expression, Lac Operon, Human Genome Project

25 questions

20
Week 20

Evolution - Origin of Life, Chemical Evolution

25 questions

21
Week 21

Evolution - Evidences (Homology, Fossils, Embryology)

25 questions

22
Week 22

Evolution - Darwin's Theory, Natural Selection, Hardy-Weinberg Principle

25 questions

23
Week 23

Evolution - Adaptive Radiation, Speciation, Human Evolution

25 questions

24
Week 24

Human Health and Disease - Common Diseases (Typhoid, Pneumonia, Malaria, Amoebiasis, Ascariasis, Ringworm)

25 questions

25
Week 25

Human Health and Disease - Immunity (Innate, Acquired, Active, Passive)

25 questions

26
Week 26

Human Health and Disease - AIDS, Cancer

25 questions

27
Week 27

Human Health and Disease - Drugs and Alcohol Abuse

25 questions

28
Week 28

Strategies for Enhancement in Food Production - Animal Husbandry

25 questions

29
Week 29

Strategies for Enhancement in Food Production - Plant Breeding, Biofortification

25 questions

30
Week 30

Strategies for Enhancement in Food Production - Tissue Culture, Single Cell Protein

25 questions

31
Week 31

Microbes in Human Welfare - Household, Industrial Products

25 questions

32
Week 32

Microbes in Human Welfare - Biogas, Sewage Treatment, Biocontrol, Biofertilizers

25 questions

33
Week 33

Biotechnology - Principles (Genetic Engineering, Restriction Enzymes, Cloning Vectors)

25 questions

34
Week 34

Biotechnology - Processes (rDNA Technology, PCR, Gel Electrophoresis)

25 questions

35
Week 35

Biotechnology and Applications - Agriculture (Bt Crops, RNAi, Biopiracy)

25 questions

36
Week 36

Biotechnology and Applications - Medicine (Gene Therapy, Transgenic Animals, ELISA)

25 questions

37
Week 37

Organisms and Populations - Organism & Environment, Adaptations

25 questions

38
Week 38

Organisms and Populations - Population Attributes, Growth Models

25 questions

39
Week 39

Organisms and Populations - Population Interactions (Mutualism, Competition, Predation, Parasitism)

25 questions

40
Week 40

Ecosystem - Structure and Function, Energy Flow

25 questions

41
Week 41

Ecosystem - Food Chains, Food Webs, Ecological Pyramids

25 questions

42
Week 42

Ecosystem - Nutrient Cycling (Carbon, Phosphorus), Ecological Succession

25 questions

43
Week 43

Biodiversity and Conservation - Patterns, Importance of Biodiversity

25 questions

44
Week 44

Biodiversity and Conservation - Loss of Biodiversity, Conservation Strategies

25 questions

45
Week 45

Environmental Issues - Air & Water Pollution

25 questions

46
Week 46

Environmental Issues - Solid Waste, Ozone Depletion, Greenhouse Effect

25 questions

47
Week 47

Revision - Genetics & Molecular Biology (weeks 11-19)

25 questions

48
Week 48

Revision - Evolution & Human Health (weeks 20-27)

25 questions

49
Week 49

Revision - Biotechnology & Applications (weeks 28-36)

25 questions

50
Week 50

Revision - Ecology & Environment (weeks 37-46)

25 questions

51
Week 51

Full Syllabus Practice

25 questions

52
Week 52

Grand Revision

25 questions

Recommended Reading

Biology

Class 12 Biology: Genetics, Evolution & Ecology Essentials

A clear guide to Class 12 Biology covering Mendel's laws of inheritance, molecular basis of inheritance, evolution theories, and ecology essentials with NEET-focused explanations.

About Grade 12 Biology Practice

Our Grade 12 Biology quizzes are designed for students aged 16-18 years. Each week features multiple-choice questions covering essential biology topics including reproduction, genetics, molecular biology, evolution, human health, food production, microbes, biotechnology, ecology, biodiversity, environmental issues.

With 52 weeks of content and 1,300+ questions, students get structured practice throughout the year. All quizzes are free and require no sign-up.

These quizzes are aligned with the CBSE and ICSE curriculum and help students build problem-solving skills, improve accuracy, and prepare for board examinations.