The mock test is useful for chapter-wise practice, quick revision, self-assessment and board examination preparation.
What’s Included in the Biology MCQ Mock Test?
CBSE Class 12 Biology MCQs
NCERT-based questions
Conceptual questions
Application-based questions
Statement-based MCQs
Biology terminology-based questions
Diagram and process-based questions
Assertion-Reasoning practice
Competency-based questions
Four options for each question
Answer key at the end
Chapter/unit-wise coverage
Questions aligned with the CBSE 2026–27 syllabus
CBSE Class 12 Biology 2026–27 Chapters Covered
1. Sexual Reproduction in Flowering Plants
Topics include:
Flower structure
Male and female reproductive parts
Microsporogenesis
Megasporogenesis
Pollination
Fertilisation
Double fertilisation
Endosperm
Embryo development
Seed and fruit formation
Apomixis
Polyembryony
2. Human Reproduction
Male reproductive system
Female reproductive system
Spermatogenesis
Oogenesis
Menstrual cycle
Fertilisation
Implantation
Pregnancy
Embryonic development
Parturition
Lactation
3. Reproductive Health
Reproductive health
Population control
Contraceptive methods
Medical termination of pregnancy
Sexually transmitted infections
Infertility
Assisted reproductive technologies
4. Principles of Inheritance and Variation
Mendel's laws
Monohybrid cross
Dihybrid cross
Incomplete dominance
Codominance
Multiple alleles
Blood groups
Chromosomal theory of inheritance
Sex determination
Linkage and recombination
Genetic disorders
Mutations
5. Molecular Basis of Inheritance
DNA structure
RNA structure
DNA replication
Transcription
Genetic code
Translation
Gene expression
Lac operon
Human Genome Project
DNA fingerprinting
6. Evolution
Origin of life
Evolutionary theories
Evidences of evolution
Darwin's theory
Natural selection
Modern synthetic theory
Adaptive radiation
Human evolution
7. Human Health and Disease
Health and disease
Pathogens
Common diseases
Immune system
Antibodies
Vaccination
Allergy
Autoimmunity
AIDS
Cancer
Drugs and alcohol abuse
8. Microbes in Human Welfare
Microbes in household products
Industrial products
Antibiotics
Sewage treatment
Biogas production
Biofertilisers
Biocontrol agents
9. Biotechnology: Principles and Processes
Biotechnology
Recombinant DNA technology
Restriction enzymes
DNA ligase
Cloning vectors
PCR
Gel electrophoresis
Transformation
Bioreactors
Downstream processing
10. Biotechnology and its Applications
Genetically modified organisms
Insulin production
Gene therapy
Molecular diagnosis
Vaccines
Transgenic animals
Bt crops
Biosafety
Biopatents
11. Organisms and Populations
Organisms and environment
Population attributes
Population growth
Exponential growth
Logistic growth
Population interactions
Mutualism
Competition
Predation
Parasitism
12. Ecosystem
Ecosystem structure
Productivity
Decomposition
Energy flow
Food chains
Food webs
Ecological pyramids
Nutrient cycling
Ecological succession
13. Biodiversity and Conservation
Biodiversity
Genetic diversity
Species diversity
Ecosystem diversity
Biodiversity patterns
Loss of biodiversity
Conservation
In-situ conservation
Ex-situ conservation
Biodiversity hotspots
Types of Questions
NCERT-Based MCQs
Questions focused on important concepts, terminology and processes from the NCERT-based syllabus.
Conceptual MCQs
Questions designed to test understanding rather than simple memorisation.
Application-Based MCQs
Questions that require students to apply biological concepts to a given situation.
Statement-Based MCQs
Questions based on multiple statements where students have to identify the correct combination.
Assertion-Reasoning Questions
Practice questions designed around assertion and reason statements.
Diagram and Process-Based Questions
Questions based on biological structures, processes and diagrams.
Competency-Based Questions
CBSE's 2026–27 Biology question-paper design includes knowledge and understanding, application of concepts, and analysis/evaluation/create competencies.
How to Use the Biology MCQ Mock Test
Step 1 – Read NCERT
Complete the relevant Biology chapter before attempting the MCQs.
Step 2 – Revise Important Terms
Revise definitions, biological processes, examples, diagrams and important terminology.
Step 3 – Attempt the MCQs
Try to solve the questions without looking at the answers.
Step 4 – Use a Time Limit
Practise answering MCQs within a fixed time to improve speed and accuracy.
Step 5 – Check the Answer Key
Check your answers only after completing the test.
Step 6 – Analyse Your Mistakes
Classify mistakes into:
Concept mistake
NCERT fact mistake
Terminology mistake
Diagram/process mistake
Question-reading mistake
Confusion between similar options
Step 7 – Revise the Weak Topic
Go back to the relevant NCERT section and revise the concept before attempting similar questions again.
CBSE Class 12 Biology Exam Preparation
For Biology preparation, students should combine NCERT reading, concept revision, MCQ practice, sample papers and previous-year question practice.
CBSE has officially published the Class XII Biology Sample Question Paper and Marking Scheme for the 2026–27 examination session.
The official Biology question-paper design also specifies MCQs, Assertion-Reasoning questions and other competency-based formats.
Biology MCQ Preparation Strategy
Follow this simple preparation cycle:
NCERT → Chapter Revision → Important Terms → MCQs → Mock Test → Answer Analysis → Revision
For every wrong answer, identify why the answer was wrong, rather than only memorising the correct option.
Download CBSE Class 12 Biology MCQ Mock Test 2026-27 PDF
Download the CBSE Class 12 Biology MCQ Mock Test 2026–27 PDF and practise NCERT-based, conceptual, application-based and competency-focused questions.
Regular MCQ practice can help students revise important Biology concepts and improve question-solving speed before the board examination.
