Table of Contents
Cracking NEET Biology becomes easier when you use a smart and calm approach. Sometimes, questions may look tricky or confusing, especially when they combine different topics. But there’s no need to stress! If you know your syllabus well and focus on the important chapters, you’re already halfway there. Biology covers the major part of the NEET (National Eligibility cum Entrance Test), so mastering it can give you a big boost in your score. Read each question carefully, break it into smaller parts, and think step by step. Connect your knowledge from different topics. With daily practice and a clear mind, even the toughest Biology questions can be solved with confidence!
NEET Biology Preparation Strategy 2025
NEET Biology is a very important part of the NEET exam, as it carries the highest weightage among all subjects. It includes both Botany and Zoology topics from Class 11 and 12 NCERT textbooks. Questions are mostly concept-based and test the student’s understanding of life processes, cells, genetics, human physiology, and ecology. Biology has 100 questions in total, out of which students need to attempt 90. Each correct answer gives 4 marks, and 1 mark is deducted for a wrong answer. A strong grip on Biology can help students score well in NEET. It is the key subject for those who aim to become doctors or enter other medical fields.
NEET 2025 Biology Class 10, 12: Most Important Chapters
NEET Biology mainly focuses on Class 11 and 12 NCERT topics. From Class 10, basic chapters like Life Processes, Control and Coordination, and Heredity and Evolution help build the foundation. For Class 11, important chapters include Cell-Structure and Function, Plant Physiology, Human Physiology, and Biomolecules. From Class 12, key chapters are Genetics and Evolution, Biotechnology, Human Reproduction, Reproductive Health, and Ecology. The NEET Biology syllabus covers topics from both Botany and Zoology. It includes 38 chapters in total – 22 from Class 11 and 16 from Class 12. Studying NCERT books thoroughly is the best way to prepare for NEET Biology.
NEET UG Important Zoology Chapters
| NEET UG Important Zoology Chapters | |
| Chapters | Topics Covered |
| Class 11th Zoology Topics | |
| Animal Kingdom | Learn about the classification, general characteristics, reproductive strategies, and economic importance of different animals. |
| Structural Organization in Animals | Understand animal tissues, external and internal features, cellular organization, and adaptations of tissues. |
| Biomolecules | Study carbohydrates, proteins, lipids, nucleic acids, enzymes, and their biological importance |
| Breathing and Exchange of Gases | Explore respiratory organs, the mechanism of breathing, gas exchange, respiratory pigments, and adaptations to different environments. |
| Human Physiology | Cover the digestive system, excretory system, nervous system, circulatory system, endocrine system, reproductive system, immune system, and homeostasis. |
| Class 12th Zoology Topics | |
| Biotechnology | Understand genetic engineering, recombinant DNA technology, DNA sequencing, PCR, gene therapy, GMOs, biotechnological applications, and ethical implications. |
| Reproduction | Learn about sexual and asexual reproduction, reproductive systems, gametogenesis, fertilization, hormonal control, and reproductive health. |
| Evolution | Explore theories of evolution, evidence, mechanisms, speciation, convergent and divergent evolution, adaptive radiation, and human evolution. |
| Biology & Human Welfare | Study health and diseases, microbes in human welfare, biomedical technologies, vaccination, human population growth, biomedical waste management, and drug abuse. |
NEET UG Important Botany Chapters
| NEET UG Important Botany Chapters | |
| Chapters | Topics Covered |
| Class 11th Botany Topics | |
| The Living World | Characteristics of living organisms, biological organization, Biodiversity, and Conservation |
| Biological Classification | Five-kingdom classification, binomial nomenclature, hierarchy of classification, kingdoms and their characteristics |
| Plant Kingdom | Algae, Bryophytes, Pteridophytes, Gymnosperms, Angiosperms (flowering plants) |
| Morphology of Flowering Plants | Root, stem, leaf, flower, fruit, seed structure, and functions |
| Anatomy of Flowering Plants | Tissue systems: vascular tissues, meristems, internal structure of root, stem, leaf |
| Cell – The Unit of Life | Cell structure and organelles, cell membrane, endoplasmic reticulum, Golgi apparatus, mitochondria, lysosomes, nucleus, chromosomes |
| Cell Cycle and Cell Division | Mitosis, Meiosis, cell cycle phases, cell cycle control |
| Transport in Plants | Absorption of water and minerals, transpiration, and translocation of solutes |
| Mineral Nutrition | Essential elements, deficiency symptoms, mechanisms of uptake and transport |
| Photosynthesis in Higher Plants | Light-dependent reactions, Calvin cycle, factors affecting photosynthesis |
| Respiration in Plants | Aerobic respiration, anaerobic respiration, glycolysis, Krebs cycle, electron transport chain |
| Plant Growth and Development | Plant hormones, photoperiodism, vernalization, seed germination, plant movements |
| Class 12th Botany Topics | |
| Sexual Reproduction in Flowering Plants | Plant sexual organs, fertilization, and seed formation |
| Principles of Inheritance and Variation | Mendelian genetics, laws of inheritance, and mutations |
| Molecular Basis of Inheritance | DNA structure, replication, transcription, translation |
| Microbes in Human Welfare | Microorganisms, their role in food production, and medicine |
| Organisms and Populations | Population growth, carrying capacity, and ecological interactions |
| Ecosystem | Ecosystem structure, energy flow, nutrient cycling |
| Biodiversity and Its Conservation | Biodiversity loss, conservation methods, and protected areas |
| Environmental Issues | Pollution, climate change, and sustainable development |
NEET UG Preparation Tips for Biology
NEET UG preparation needs a good study plan. Focus on NCERT books for Physics, Chemistry, and Biology. Make a timetable and study every day. Practice previous years’ question papers and take mock tests. Revise all topics again and again. Clear your doubts quickly. Eat healthy and sleep well to stay fresh. Stay positive and believe in yourself. With hard work and smart study, you can score well in NEET UG and get admission into a good medical college.
Stick to NCERT:
- Toppers emphasized that NEET NCERT is the ultimate and most reliable source for Biology preparation, as most questions are directly based on its content..
- Read every line of Class 11 & 12 NCERT and underline key points.
Make Short Notes:
- Create handwritten notes with diagrams, flowcharts, and tables.
- Revise them weekly to retain information.
Revise Frequently:
- Toppers revise at least 4–5 times before the exam.
- Make a quick revision schedule just for Biology in the last month.
Solve PYQs:
- Practice the last 10–15 years of NEET Biology PYQs.
- Focus on frequently asked topics like Human Physiology, Genetics, Plant Kingdom, etc.
Use Flashcards for Facts:
- Biology has many facts, such as flashcards, which help in quick memory recall.
Practice Mock Tests:
- Give full-length mocks regularly and analyze your mistakes.
- Focus on time management and accuracy.
Label Diagrams Properly:
- NEET often asks direct questions based on diagrams.
- Practice labeling diagrams from the NCERT books.
Important Chapters for NEET Biology Preparation 2025
All the students, while preparing for the NEET Biology Exam 2025 must complete their preparations by studying all the important topics as mentioned below in the tables. Check the article below for subject-wise, chapter-wise weightage for NEET Biology Preparation 2025:
NEET Biology Chapter Wise Weightage
|
NEET Biology Chapter Wise Weightage
|
|
| Chapter |
Weightage out of 100
|
| Diversity in Living World | 14% |
| Cell Structure and Function | 5% |
| Structural Organisation in Animals and Plants | 9% |
| Plant Physiology | 6% |
| Human Physiology | 20% |
| Reproduction | 9% |
| Genetics and Evolution | 18% |
| Biotechnology and Its Applications | 3% |
| Biology and Human Welfare | 4% |
| Ecology and environment | 12% |
NEET Botany Chapter Wise Weightage
| NEET Botany Chapter Wise Weightage | ||
| Class | Botany important chapters for NEET 2025 | Total |
| XII | Biology in Human Welfare | 1 |
| XI | Cell & Cell Cycle | 5 |
| XI | Diversity of Life | 5 |
| XII | Ecology | 6 |
| XII | Genetics | 6 |
| XI | Plant Physiology | 8 |
| XII | Reproduction & Sexual Reproduction | 4 |
| XI | Structural Organisation of Plants | 5 |
| XII | Animal Husbandry & Biotechnology | 7 |
| XII | Evolution: Theories & Evidence | 1 |
| XI | Biomolecules | 2 |
| Total | 50 | |
NEET Zoology Chapter Wise Weightage
| NEET Zoology Chapter Wise Weightage | ||
| Class | Zoology important chapters for NEET 2025 | Total |
| XII | Biology in Human Welfare | 2 |
| XI | Cell Structure and Function | 4 |
| XI | Diversity of Life | 0 |
| XII | Ecology | 3 |
| XII | Genetics | 5 |
| XI | Plant Physiology | 0 |
| XII | Reproduction & Sexual Reproduction | 0 |
| XI | Structural Organisation of Plants | 0 |
| XI | Animal Kingdom | 5 |
| XII | Animal Husbandry & Biotechnology | 6 |
| XII | Evolution | 1 |
| XII | Human Health & Disease | 1 |
| XI | Human Physiology | 10 |
| XII | Human Reproduction & Reproductive Health | 6 |
| XI | Biomolecules | 3 |
| XI | Structural Organisation in Animals | 4 |
| Total | 50 | |
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