Based on the official NEET (UG) 2026 Biology syllabus
NEET Biology: Syllabus, Units & Exam Pattern
The complete list of 10 official Biology units for NEET-UG — covering Botany and Zoology together — how Biology is scored as the largest section of the paper (90 questions, 360 marks, with negative marking), and a worked demonstration question.
Key Curriculum Facts
- 90
- Questions
- Botany + Zoology, single-correct MCQs
- 360
- Marks
- Half of NEET's 720 total marks
- +4 / −1
- Marking
- Correct +4, incorrect −1, unanswered 0
What NEET Biology Tests
Biology is the largest part of NEET-UG. It is examined as a single subject built from Botany and Zoology, and together they carry 90 of the paper’s 180 questions and 360 of the 720 marks — exactly half the exam. Every question is a four-option multiple-choice question with a single correct answer, and there is negative marking.
The official 2026 syllabus spans 10 units, running from the Diversity in the Living World and Structural Organisation through Cell Structure, Plant and Human Physiology, Reproduction, Genetics and Evolution, Biology and Human Welfare, and Biotechnology to Ecology and Environment.
This page shows a worked demonstration question using a clue-first approach: a prompt toward the method, then a full step-by-step solution, so the reasoning is clear rather than just the final answer.
Complete Unit Directory (NEET-UG Biology)
All 10 official syllabus units across Botany & Zoology, grouped into four themed pillars
Diversity & Organisation of Life
-
Ch 1
Diversity in Living World
What is living, biodiversity and classification, the five-kingdom system, and the classification of plants and animals into major groups.
-
Ch 2
Structural Organisation in Animals and Plants
Morphology, anatomy and functions of flowering plants and selected families, and the tissues and organ systems of animals.
Cell Biology & Physiology
-
Ch 3
Cell Structure and Function
The cell as the unit of life, prokaryotic and eukaryotic structure, organelles, biomolecules and enzymes, and cell division.
-
Ch 4
Plant Physiology
Photosynthesis, respiration, and plant growth and development including growth regulators.
-
Ch 5
Human Physiology
Breathing and circulation, excretion, locomotion and movement, and neural and chemical coordination, with related disorders.
Reproduction, Genetics & Evolution
-
Ch 6
Reproduction
Sexual reproduction in flowering plants, human reproduction, and reproductive health.
-
Ch 7
Genetics and Evolution
Heredity and variation, the molecular basis of inheritance, and the evidence and mechanisms of evolution.
Human Welfare, Biotechnology & Ecology
-
Ch 8
Biology and Human Welfare
Human health and disease, immunology, and the role of microbes in human welfare.
-
Ch 9
Biotechnology and Its Applications
The principles and processes of biotechnology and its applications in health and agriculture.
-
Ch 10
Ecology and Environment
Organisms and environment, ecosystem structure and energy flow, and biodiversity and its conservation.
In Mendel’s pea plants, tallness (T) is completely dominant over dwarfness (t). Two heterozygous tall plants (Tt) are crossed. What fraction of the offspring are expected to be dwarf?
Reasoning Clue & Solution
Draw the Punnett square for Tt × Tt. A dwarf plant must carry two recessive alleles (tt) — how many of the four equally likely allele combinations are tt?
The EduMagik 3-Step Hint Ladder
Point to the Method
Names the tool to reach for (e.g. "Set up a Punnett square for the cross") without giving the answer.
Guided Reasoning Prompt
Prompts the key idea (e.g. "A dwarf plant is recessive — how many allele combinations are tt?").
Complete Worked Solution
Shows the full step-by-step working and explains why the answer is correct.
How to Prepare NEET Biology
Practical ways to work through the 10-unit syllabus
Anchor Every Topic in NCERT
NEET Biology tracks the NCERT textbooks very closely, so read every line, diagram and in-text box of the NCERT Biology books before moving to reference material.
Keep Botany and Zoology Balanced
Biology is 90 questions split across Botany and Zoology; together they carry 360 marks — half of NEET’s total — so neither half can be neglected.
Drill Diagrams, Cycles and Disorders
Many questions test labelled diagrams, physiological cycles and the named disorders listed in Human Physiology, so practise reproducing them accurately from memory.
Frequently Asked Questions
How many units are in the NEET Biology syllabus?
The official NEET (UG) 2026 Biology syllabus has 10 units spanning Botany and Zoology, from Diversity in Living World and Structural Organisation through to Biotechnology and Ecology and Environment. Always confirm the current syllabus on the official NMC/NTA website.
How many questions and marks does Biology carry in NEET?
Biology carries 90 questions for 360 marks — half of the whole paper. It is the largest subject in NEET-UG, with Physics and Chemistry carrying 45 questions (180 marks) each, for a total of 180 questions and 720 marks.
Is NEET Biology the same as Botany and Zoology?
Yes. In NEET-UG, Botany and Zoology are examined together as a single subject, Biology, and their 90 questions together make up 360 of the 720 marks.
Is there negative marking in NEET Biology?
Yes. Every question is a single-correct four-option MCQ: a correct answer scores +4, an incorrect answer scores −1, and an unanswered question scores 0.
Related Learning Paths
Ready to Support Your Child's Learning?
Join EduMagik and explore the curriculum with calm, structured guidance.
Explore NEET preparation on EduMagik