NCERT Exemplar Class 12 Biology PDF download - Free PDF Download
Download chapter-wise NCERT Exemplar Class 12 Biology PDFs with high-level NEET-focused MCQs, assertion-reason questions, and concept-based practice for all 16 chapters, especially Genetics, Reproduction, Evolution, and Biotechnology.
Table of Contents
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What Is NCERT Exemplar and Why Does Class 12 Biology Need It?
NCERT Exemplar is a supplementary problem book published by NCERT alongside the standard textbook. For Class 12 Biology, it contains:
- Higher-order MCQs (single correct and multiple correct)
- Assertion-reason questions — a format directly used in NEET
- Short answer questions requiring conceptual explanation
- Match-the-following and fill-in-the-blank questions testing precise recall
| Resource | Difficulty | Best For |
|---|---|---|
| NCERT Textbook Exercises | Moderate | Building basic concept clarity |
| NCERT Exemplar Problems | High | NEET preparation, boards above 90% |
| Previous Year NEET Papers | Exam-level | Final stage practice |
💡 Expert Tip by eSaral Academic Team, Top Doctor Faculty from Kota: "NEET Biology questions are famously NCERT-based — but 'NCERT-based' doesn't mean only from the textbook exercises. Many NEET questions come from in-text paragraphs, diagrams, and the exact type of application thinking that NCERT Exemplar trains. Solve Exemplar after every chapter, before moving to the next."
Chapter-Wise PDF Download Links — All 16 Chapters
Click any chapter link below to access the NCERT Exemplar Class 12 Biology PDF for that chapter:
| Chapter | Topic | Download |
|---|---|---|
| Chapter 1 | Reproduction in Organisms | Download PDF |
| Chapter 2 | Sexual Reproduction in Flowering Plants | Download PDF |
| Chapter 3 | Human Reproduction | Download PDF |
| Chapter 4 | Reproductive Health | Download PDF |
| Chapter 5 | Principles of Inheritance and Variation | Download PDF |
| Chapter 6 | Molecular Basis of Inheritance | Download PDF |
| Chapter 7 | Evolution | Download PDF |
| Chapter 8 | Human Health and Disease | Download PDF |
| Chapter 9 | Strategies for Enhancement in Food Production | Download PDF |
| Chapter 10 | Microbes in Human Welfare | Download PDF |
| Chapter 11 | Biotechnology: Principles and Processes | Download PDF |
| Chapter 12 | Biotechnology and its Applications | Download PDF |
| Chapter 13 | Organisms and Populations | Download PDF |
| Chapter 14 | Ecosystems | Download PDF |
| Chapter 15 | Biodiversity and Conservation | Download PDF |
| Chapter 16 | Environmental Issues | Download PDF |
All PDFs are free to download. No registration required.
Chapter-Wise Overview: What Each Chapter Covers
Unit 1 — Reproduction (Chapters 1–4)
Chapter 1 — Reproduction in Organisms: Modes of reproduction (asexual and sexual), life span, asexual reproduction methods (binary fission, budding, fragmentation, vegetative propagation, spore formation). Exemplar tests conceptual distinctions between reproduction types across different organisms.
Chapter 2 — Sexual Reproduction in Flowering Plants: Flower structure, microsporogenesis, megasporogenesis, pollination (agents and types), fertilisation (double fertilisation), post-fertilisation structures. One of the most diagram-intensive chapters — Exemplar tests labelling and process sequencing.
Chapter 3 — Human Reproduction: Male and female reproductive systems, gametogenesis (spermatogenesis and oogenesis), menstrual cycle, fertilisation, implantation, embryonic development, parturition. Exemplar questions test hormonal regulation of the menstrual cycle and development stages.
Chapter 4 — Reproductive Health: STIs, contraceptive methods (barrier, hormonal, IUDs, surgical), MTP, infertility and ART (IVF, ZIFT, GIFT, AI). Exemplar tests specific contraceptive mechanisms and ART procedures — frequently tested in NEET.
Unit 2 — Genetics and Evolution (Chapters 5–7)
Chapter 5 — Principles of Inheritance and Variation: Mendel's laws, monohybrid and dihybrid crosses, incomplete dominance, codominance, sex determination, sex-linked inheritance, chromosomal disorders. One of the highest-weightage NEET chapters — Exemplar is essential here.
Chapter 6 — Molecular Basis of Inheritance: DNA structure (Watson-Crick model), DNA replication, transcription, translation, genetic code, gene regulation (lac operon), Human Genome Project, DNA fingerprinting. Exemplar tests process details and regulatory mechanisms at depth.
Chapter 7 — Evolution: Origin of life, Darwinism, Neo-Darwinism, Hardy-Weinberg principle, types of natural selection, adaptive radiation, human evolution. Exemplar questions test application of evolutionary principles to specific scenarios.
💡 Expert Tip by eSaral Academic Team, Top Doctor Faculty from Kota: "Chapters 5 and 6 together (Genetics + Molecular Basis) account for 10–14 NEET questions every year — the single largest block from any two consecutive chapters. Exemplar for these two chapters is non-negotiable. Every hour spent here yields more NEET marks than the same hour spent on most other chapters."
Unit 3 — Biology in Human Welfare (Chapters 8–10)
Chapter 8 — Human Health and Disease: Immunity (innate and adaptive), antibodies, vaccines, allergies, autoimmune diseases, AIDS, cancer, drugs and alcohol abuse. Exemplar tests the immune response mechanism and disease-specific details.
Chapter 9 — Strategies for Enhancement in Food Production: Plant breeding (hybridisation, mutation breeding, polyploidy), biofortification, SCP, tissue culture (totipotency, micropropagation). Exemplar tests specific examples and techniques in plant and animal improvement.
Chapter 10 — Microbes in Human Welfare: Microbes in food production (curd, bread, toddy), industrial products (antibiotics, organic acids, biogas), bioremediation, biocontrol agents. Exemplar questions frequently test specific microbe-product relationships.
Unit 4 — Biotechnology (Chapters 11–12)
Chapter 11 — Biotechnology: Principles and Processes: Recombinant DNA technology, restriction enzymes (REases), vectors (plasmids, bacteriophages), PCR, gel electrophoresis, blotting techniques. Exemplar tests the step-by-step process of rDNA technology with conceptual reasoning.
Chapter 12 — Biotechnology and its Applications: GM crops (Bt cotton, Golden Rice, Flavr Savr tomato), insulin production, gene therapy, biopiracy, biosafety. Exemplar tests specific applications and ethical dimensions — increasingly tested in NEET.
Unit 5 — Ecology (Chapters 13–16)
Chapter 13 — Organisms and Populations: Population attributes (birth rate, death rate, age distribution), population growth models (exponential and logistic), population interactions (mutualism, commensalism, predation, competition, parasitism, amensalism). Exemplar tests graph interpretation and interaction type identification.
Chapter 14 — Ecosystems: Productivity (gross and net), decomposition, energy flow (10% law), ecological pyramids, nutrient cycling (carbon, phosphorus). Exemplar tests energy calculations and nutrient cycle stages.
Chapter 15 — Biodiversity and Conservation: Levels of biodiversity, species richness patterns, biodiversity loss causes (HIPPO), conservation strategies (in situ: biosphere reserves, national parks; ex situ: seed banks, cryopreservation). Exemplar tests specific conservation examples and biodiversity statistics.
Chapter 16 — Environmental Issues: Air pollution (types, effects), water pollution, solid waste management, radioactive waste, greenhouse effect, ozone depletion, deforestation. Exemplar questions test specific pollutants, their sources, and control measures.
NEET Weightage: Which Class 12 Biology Chapters Matter Most?
| Chapter | NEET Frequency | Priority |
|---|---|---|
| Principles of Inheritance and Variation (Ch 5) | Very High | ⭐⭐⭐ |
| Molecular Basis of Inheritance (Ch 6) | Very High | ⭐⭐⭐ |
| Human Reproduction (Ch 3) | High | ⭐⭐⭐ |
| Sexual Reproduction in Flowering Plants (Ch 2) | High | ⭐⭐⭐ |
| Human Health and Disease (Ch 8) | High | ⭐⭐⭐ |
| Evolution (Ch 7) | High | ⭐⭐⭐ |
| Biotechnology: Principles and Processes (Ch 11) | Medium-High | ⭐⭐ |
| Organisms and Populations (Ch 13) | Medium-High | ⭐⭐ |
| Ecosystems (Ch 14) | Medium | ⭐⭐ |
| Reproductive Health (Ch 4) | Medium | ⭐⭐ |
| Biotechnology and Applications (Ch 12) | Medium | ⭐⭐ |
| Reproduction in Organisms (Ch 1) | Medium | ⭐⭐ |
| Biodiversity and Conservation (Ch 15) | Low-Medium | ⭐ |
| Microbes in Human Welfare (Ch 10) | Low-Medium | ⭐ |
| Food Production Strategies (Ch 9) | Low | ⭐ |
| Environmental Issues (Ch 16) | Low | ⭐ |
Prioritise Exemplar practice for ⭐⭐⭐ chapters first. These six chapters together account for the majority of Class 12 Biology questions in NEET every year.
For the complete CBSE Class 12 Biology Syllabus with unit-wise marks breakdown, and the standard NCERT Class 12 Biology Book PDF for reference, visit eSaral.
How to Use NCERT Exemplar Class 12 Biology Effectively
Follow this approach to get maximum marks from NCERT Exemplar:
- Complete the standard NCERT chapter first. Read every concept, understand all diagrams, and answer all in-text and chapter-end questions before opening Exemplar for that chapter.
- Attempt Exemplar MCQs without looking at answers. They give immediate feedback on whether your conceptual understanding is solid. A wrong MCQ answer points to a specific concept gap.
- Pay special attention to assertion-reason questions. This format appears directly in NEET. Exemplar assertion-reason questions are among the best preparation for this question type. Never skip them.
- Use the answer key to verify — not to copy. For wrong answers, trace back to exactly which line in NCERT you misunderstood or missed. Then reread that specific section.
- Prioritise high-weightage chapters. Use the NEET weightage table above to allocate your Exemplar time. Spend more days on Chapters 5, 6, 3, 2, 8, and 7 before moving to lower-priority chapters.
- Keep an error log. Write down every Exemplar question you got wrong and the reason. Review this log two weeks before your board exam and again before NEET.
For free video lectures by Kota's Top Doctor Faculty covering every concept in Class 12 Biology — explained at the depth NEET demands — install the eSaral App.
Frequently Asked Questions
Find answers to common questions.
Is NCERT Exemplar necessary for Class 12 Biology NEET preparation?
NCERT Exemplar is strongly recommended for NEET — not optional. NEET Biology questions are NCERT-based but test application, not just recall. Exemplar trains exactly the kind of reasoning NEET MCQs require. For CBSE board exams, Exemplar is recommended for students targeting above 90 marks. The assertion-reason format in Exemplar directly mirrors NEET question style.
Which chapters of NCERT Exemplar Class 12 Biology are most important for NEET?
The most NEET-critical Exemplar chapters are Principles of Inheritance (Chapter 5), Molecular Basis of Inheritance (Chapter 6), Human Reproduction (Chapter 3), Sexual Reproduction in Flowering Plants (Chapter 2), Human Health and Disease (Chapter 8), and Evolution (Chapter 7). These six chapters consistently account for the majority of Class 12 Biology questions in every NEET paper.
Can I use NCERT Exemplar Class 12 Biology for CBSE board exam preparation?
Yes. NCERT Exemplar is excellent for CBSE board preparation — particularly for students targeting above 90 marks. Board exam HOTS (Higher Order Thinking Skills) questions are frequently at Exemplar difficulty. Short answer questions in Exemplar also match the 2-mark and 3-mark board question formats closely. Solving Exemplar chapter by chapter alongside NCERT ensures thorough preparation for both boards and NEET.
Where can I get free video lectures for NCERT Exemplar Class 12 Biology?
Free video lectures covering every Class 12 Biology chapter — at NEET depth — are available by installing the eSaral App. Lectures are delivered by Kota's Top Doctor Faculty and cover all concepts at the level Exemplar and NEET demand.
What is the difference between NCERT Class 12 Biology textbook and NCERT Exemplar?
The NCERT textbook contains chapter content, diagrams, and standard exercise questions at moderate difficulty. NCERT Exemplar is a separate supplementary book with higher-difficulty MCQs, assertion-reason questions, and short answers. Download the standard textbook from NCERT Class 12 Biology Book PDF and use Exemplar after completing each chapter.