NEET Biology Syllabus 2025
NEET Biology Syllabus 2025Biology is a key subject in the NEET 2025 exam, carrying 50% of the total questions in the paper. A thorough understanding of the NEET Biology syllabus helps aspirants plan effectively, focus on high-weightage areas, and achieve better results.
The syllabus, curated from NCERT Class 11 and 12 textbooks, is divided into three main units: Botany, Zoology, and Ecology. In this guide, you’ll find a complete chapter-wise breakdown along with deleted topics, important subtopics, and weightage details to streamline your preparation for NEET 2025.
Class 11 Biology Syllabus
Biology has a major impact on NEET Exam scores, as it covers 360 out of 720 marks in the whole paper. Here’s a detailed table for the topics covered from class XI in Biology.
Unit | Chapter Name | Subtopics Covered |
I | Diversity of Living Organisms | Five kingdom classification, taxonomy, binomial nomenclature, biological classification |
I | The Living World | Characteristics of living organisms, taxonomy, systematics |
I | Biological Classification | Kingdom Monera, Protista, Fungi, Plantae, Animalia |
I | Plant Kingdom | Algae, Bryophyta, Pteridophyta, Gymnosperms, Angiosperms |
I | Animal Kingdom | Classification of animals – Non-chordates to chordates |
II | Structural Organisation in Animals & Plants | Morphology of flowering plants, anatomy of plants, tissues; frog anatomy |
III | Cell Structure and Function | Cell theory, structure of prokaryotic & eukaryotic cells, cell organelles |
III | Biomolecules | Carbohydrates, proteins, enzymes, nucleic acids |
III | Cell Cycle and Cell Division | Mitosis, meiosis, cell cycle phases |
IV | Plant Physiology | Transport in plants, mineral nutrition, photosynthesis, respiration, growth regulators |
V | Human Physiology | Digestion, respiration, circulation, excretion, locomotion, nervous and endocrine system |
Class 12 Biology Syllabus
Unit | Chapter Name | Subtopics Covered |
VI | Reproduction | Reproduction in organisms, sexual reproduction in flowering plants, human reproduction, reproductive health |
VII | Genetics and Evolution | Mendel’s laws, chromosomal theory, linkage and recombination, DNA, RNA, evolution theories |
VIII | Biology in Human Welfare | Health & disease, microbes in human welfare, antibiotics, vaccines, sewage treatment |
IX | Biotechnology and Its Applications | Principles, tools, and processes of biotechnology, GMOs, and applications in agriculture & medicine |
X | Ecology and Environment | Ecosystems, biodiversity, environmental issues, conservation, organisms & environment |
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Deleted Topics in NEET 2025 Biology
Every Year NEET exam comes with slight changes in the matters of improvements and deduction of topics. The NEET 2025 Exam also comes with some deleted topics from both class XIth and XIIth, including:
Section | Removed/Trimmed Topics |
Class 11 Biology | Some details in ‘Animal Kingdom’ & ‘Morphology of Plants’ |
Class 12 Biology | Parts of the ‘Ecosystem’ and ‘Reproductive Health’ chapters |
NEET Biology Chapter-wise Weightage (Tentative)
For an effective NEET 2025 exam preparation, students need a proper idea of the subject’s or topic’s weightage. In the detailed table below, the chapter-wise approx. weightage is mentioned to help you understand each topic deeply.
Chapter Name | Approx. Weightage (%) |
Human Physiology | 18% |
Genetics & Evolution | 14% |
Plant Physiology | 12% |
Reproduction | 10% |
Diversity of Living Organisms | 9% |
Ecology & Environment | 9% |
Biotechnology | 8% |
Structural Organisation | 6% |
Cell Structure & Biomolecules | 6% |
Biology in Human Welfare | 5% |
Cell Cycle & Division | 3% |
NEET Biology Preparation Tips
Having a strict preparation is necessary for clearing the NEET 2025 exam, however, it’s also crucial to follow some cheeky tactics to excel in the preparation stage before the exam. Here are some special tips to gain an extra advantage on the path of clearing the NEET 2025 exam:
- Stick to NCERT Class 11 & 12 Biology books – almost all NEET questions come directly/indirectly from these.
- Focus on diagrams, scientific names, and definitions.
- Solve mock tests and PYQs regularly.
- Use flashcards for quick recall of terminologies and cycles.
Wishing you best of luck in your preparation journey!