NEET Biology: Chapterwise Weightage 2025 PDF Download

Biology is one of the most important subjects for the NEET Exam. It has a significant weightage in the overall examination. It consists of topics from Animal and Plant Biology, Human Anatomy and Physiology, Genetics and Ecology. The syllabus of Biology for NEET Exam covers a wide range of topics from the NCERT syllabus. The topics are designed to test the student's knowledge and understanding of the subject. The weightage of Biology in the NEET Exam is approximately 50%, which makes it one of the most important subjects for the exam. This article provides an overview of the chapter wise weightage of NEET 2023 for Biology.

NEET 2023 Biology Syllabus

NEET Chapter wise Weightage 2023: Biology

Biology is a subject that requires a thorough understanding of the concepts and principles. With NEET 2023 around the corner, it is important for aspiring medical students to have a clear understanding of the weightage of different chapters for the upcoming examination. Knowing the chapter wise weightage of Biology for NEET 2023 can help students in strategizing their preparations and allotting more time to important topics. This article will provide an overview of the NEET 2023 chapter wise weightage of Biology.

NEET chapter wise weightage for Biology

*Approximate weightage; based on previous year exams and experts’ analysis

Weightage Distribution for Botany and Zoology

The NEET exam for 2023 will have a Biology section with 90 questions, split evenly between Botany and Zoology. Each topic will have a certain weightage.

NEET Biology Chapterwise Weightage – Previous years’ trends

The table provides insights into different chapters and corresponding weightage. The average number of questions given in the last column is on the basis of previous years’ trends from the year 2006 onwards up till NEET 2019. Take a look:

Important Units for NEET Biology – Categorizing Chapters Based on Weightage

Previous year's NEET question papers have been used to create a categorization of the chapters in the syllabus according to their weightage. This categorization is subject to change annually depending on the number of questions asked from each chapter. The data below provides an average of the weightage of the chapters.

Most Important Chapters for NEET biology

• Biological Classification
• Morphology of flowering plants
• Molecular Basis of Inheritance
• Principles of Inheritance and Variation
• Animal Kingdom
• Sexual Reproduction in Flowering Plants
• Human Reproduction

Moderately Important Chapters for NEET biology

• Reproductive Health
• Environmental Issues
• Photosynthesis in Higher Plants
• Breathing and Exchange of Gases
• Plant Kingdom
• Chemical Coordination and Integration
• Cell- The Unit of Life
• Organisms and Population
• Biotechnology- Principles and Processes
• Biotechnology and its Applications
• Biodiversity and Conservation
• Cell Cycle and Cell Division
• Neural Control and Coordination
• Anatomy of Flowering Plants
• Digestion and Absorption
• Biomolecules
• Reproduction in Organisms
• Evolution
• Ecosystem

Less Important Chapters for NEET biology

• Strategies for enhancement in food production
• Mineral Nutrition
• Transport in Plants
• Human Health and Disease
• Structural Organisation in Animals
• The Living World
• Microbes in Human Welfare
• Plant Growth and Development
• Excretory Products and their Elimination
• Locomotion and Movement
• Body Fluids and Circulation
• Respiration in Plants

Note:- Candidates must focus on least important topics as well as questions will be there from these topics also.

Best Books for NEET Biology

For successful preparation of the NEET Exam, NCERT textbooks for Biology should be a top priority. Students should focus on gaining a conceptual understanding of Morphology and Physiology. In addition to the NCERT exemplar books for NEET, other question banks like the one by Dr. Ali can be referred to for practice. To make sure that concepts are thoroughly learnt, aspirants should revise rigorously and practice regularly. To aid learning, making notes from the various resources is also recommended. The best books for NEET 2023 Biology and the most useful NEET study materials for Biology are:

• NCERT (Textbook) Biology – Class 11 & 12
• SC Verma Biology books
• Dinesh Objective Biology
• Biology by GRB Bathla’s Publications
• Trueman’s Biology – Vol 1 and Vol 2
• Biology Books by Pradeep’s Publications

Frequently Asked Questions (FAQs) related to Biology Weightage

Why is it important for students to be aware of the weightage during NEET preparation? 

It is essential for students to be aware of the NEET syllabus and the relative weightage of each chapter before they start studying. This enables them to prioritize their study material and understand which topics need to be given more attention.

What are some important topics in NEET Biology?

Some of the most important topics to be studied in NEET Biology are Human Physiology, Genetics and Evolution, Diversity of Living Organisms, Ecology, and Reproduction.

Is relying solely on NCERT enough for NEET 2023 preparations? 

NCERT is undoubtedly a key resource for NEET 2023 preparation, but it is recommended to supplement it with other trusted books for a better understanding of the concepts and formulae.

How many questions will be there from each section?

There will be a total of 200 questions in NEET 2023 out of which candidates will have to attend 180. Biology section will contain 100 questions whereas 50 questions will be in each Physics and Chemistry section.