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Build a NEET Biology test across all 32 chapters, with Botany and Zoology kept level — a full 90-question section, a 45-question half, or a 10-question check on this week's NCERT chapters. Biology is half the NEET paper, 90 questions and 360 marks, and the subject where accuracy is most within reach.
Free · no sign-up · updated October 2026
Your paper
Press Generate paper plan for a chapter-by-chapter blueprint: questions per chapter, numericals, marks and time — ready to print and fill from your PYQs, modules or the BrainStride question bank.
Every chapter in the NEET Biology syllabus, heaviest first. The share column is what a 90-question test gives each chapter in exam-weightage mode, before rounding.
| Chapter | Class | Questions per paper | Share of the subject | The mistake it catches |
|---|---|---|---|---|
| Molecular Basis of Inheritance | 12 | 4–6 | 6% | Blurring prokaryotic and eukaryotic transcription, or the lac operon states. |
| Principles of Inheritance and Variation | 12 | 4–5 | 5% | Applying a plain 9:3:3:1 where linkage or incomplete dominance changes it. |
| Cell: The Unit of Life | 11 | 3–4 | 4% | Quoting organelle functions but missing the exceptions NCERT states. |
| Sexual Reproduction in Flowering Plants | 12 | 3–4 | 4% | Losing track of ploidy at each stage of the embryo sac. |
| Human Reproduction | 12 | 3–4 | 4% | Mis-timing events in gametogenesis and the menstrual cycle. |
| Human Health and Disease | 12 | 3–4 | 4% | Matching a disease to the wrong pathogen or vector. |
| Biotechnology: Principles and Processes | 12 | 3–4 | 4% | Mixing up the order in which restriction enzymes, vectors and ligase are used. |
| Evolution | 12 | 2–4 | 4% | Using Hardy–Weinberg without checking its assumptions. |
| Biological Classification | 11 | 2–3 | 3% | Mixing five-kingdom criteria with the three-domain system. |
| Plant Kingdom | 11 | 2–3 | 3% | Confusing haplontic, diplontic and haplo-diplontic life cycles. |
| Animal Kingdom | 11 | 2–3 | 3% | Placing a phylum by habitat instead of the diagnostic feature. |
| Morphology of Flowering Plants | 11 | 2–3 | 3% | Reading a floral formula without aestivation and placentation. |
| Anatomy of Flowering Plants | 11 | 2–3 | 3% | Swapping dicot and monocot vascular bundle features. |
| Biomolecules | 11 | 2–3 | 3% | Confusing enzyme classes with their examples. |
| Cell Cycle and Cell Division | 11 | 2–3 | 3% | Putting chromosome number and DNA content at the wrong meiotic stage. |
| Photosynthesis in Higher Plants | 11 | 2–3 | 3% | Mixing C3 and C4 leaf anatomy with their biochemical steps. |
| Respiration in Plants | 11 | 2–3 | 3% | Counting ATP without the assumptions NCERT states. |
| Plant Growth and Development | 11 | 2–3 | 3% | Matching a growth regulator to the wrong classic experiment. |
| Body Fluids and Circulation | 11 | 2–3 | 3% | Confusing cardiac cycle phases with the ECG waves. |
| Chemical Coordination and Integration | 11 | 2–3 | 3% | Matching a hormone to the wrong gland or the wrong disorder. |
| Reproductive Health | 12 | 2–3 | 3% | Learning contraceptive categories without NCERT’s examples. |
| Biotechnology and its Applications | 12 | 2–3 | 3% | Confusing Bt cry genes with the RNA interference examples. |
| Organisms and Populations | 12 | 2–3 | 3% | Swapping the exponential and logistic growth equations and their symbols. |
| Ecosystem | 12 | 2–3 | 3% | Inverting the pyramid of energy against those of number and biomass. |
| Biodiversity and Conservation | 12 | 2–3 | 3% | Quoting biodiversity figures without the NCERT context they come from. |
| The Living World | 11 | 1–2 | 2% | Learning the taxonomic hierarchy without the examples it is tested with. |
| Structural Organisation in Animals | 11 | 1–2 | 2% | Learning frog anatomy without the labels NCERT uses. |
| Breathing and Exchange of Gases | 11 | 1–2 | 2% | Mis-stating lung volumes and capacities by definition. |
| Excretory Products and their Elimination | 11 | 1–2 | 2% | Placing reabsorption in the wrong part of the nephron. |
| Locomotion and Movement | 11 | 1–2 | 2% | Describing sliding filament theory without what happens to each band. |
| Neural Control and Coordination | 11 | 1–2 | 2% | Reversing the ion movements in resting and action potentials. |
| Microbes in Human Welfare | 12 | 1–2 | 2% | Learning microbe names without the product each one makes. |
Chapter weights are BrainStride’s reading of past papers, not official data — NTA publishes no chapter weightage. Ranges overlap, so they do not add up exactly to the subject total.
The same 90-question paper twice: once weighted like the exam, once with Molecular Basis of Inheritance and Human Reproduction marked weak. Only the rows that change are shown.
| Chapter | Exam weightage | Weak-chapter mode | Change |
|---|---|---|---|
| The Living World | 2 | 1 | -1 |
| Biological Classification | 3 | 2 | -1 |
| Plant Kingdom | 3 | 2 | -1 |
| Morphology of Flowering Plants | 3 | 2 | -1 |
| Anatomy of Flowering Plants | 3 | 2 | -1 |
| Excretory Products and their Elimination | 2 | 1 | -1 |
| Locomotion and Movement | 2 | 1 | -1 |
| Neural Control and Coordination | 2 | 1 | -1 |
| Human Reproduction | 5 | 9 | +4 |
| Molecular Basis of Inheritance | 5 | 11 | +6 |
| Evolution | 4 | 3 | -1 |
| Microbes in Human Welfare | 2 | 1 | -1 |
Marked chapters get 2.5× their usual share; the questions come from the chapters the paper would otherwise give the most to.
NEET Biology is written close to the NCERT text, which makes it the most predictable half of the paper — and the half where careless reading costs the most.
Test from the book's lines. Fill generated Biology tests from previous-year NEET questions and NCERT-based questions first. A question that turns on one word in an NCERT diagram label is typical, and is exactly what tests from other sources miss. Our NCERT Biology strategy explains the three-pass reading method.
Keep Botany and Zoology level. The generator always splits a Biology test evenly, because the paper does. Students who prefer Zoology often let Botany slide — plant physiology, morphology and anatomy — and lose easy marks there.
Weight genetics and physiology, but not only them. Genetics and evolution, human physiology and ecology carry the most questions. But a 90-question section reaches nearly every chapter, and the light ones are often pure recall. Use equal weighting once a month so chapters like The Living World or Reproductive Health are not forgotten.
The chapter ranges behind the generator come from our NEET Biology page; the Genetics and Human Physiology chapter guides cover the two heaviest units.
A weekly cycle
Ten questions, equal weighting, only the chapters you finished last week. It tells you whether they stuck.
Concept gaps go back to the textbook; silly errors get accuracy drills on the same chapter; slow solves get timed sets.
Mark the two chapters that cost you most and build a 90-question paper. They get two and a half times their usual share.
A realistic subject paper, scored with +4 / −1, to check the fixes show up when the weighting is fair.
Ninety of the 180 questions — 45 Botany and 45 Zoology — worth 360 of the 720 marks. Since 2025 all of them are compulsory, with +4 for a correct answer and −1 for a wrong one. The generator keeps the 45 / 45 split at every length you choose.
In BrainStride’s reading of recent papers, genetics and evolution (molecular basis, inheritance and evolution) carry the most, followed by human physiology and ecology. Cell biology, reproduction and biotechnology are next. NTA publishes no chapter weightage, so these are estimates given as ranges.
Mostly. NEET Biology questions follow the NCERT text closely, so NCERT-based and previous-year questions are the best material for generated tests. Use other sources only for application-style questions in genetics and ecology, and check their answers against NCERT before trusting the key.
Not in the sense of writing questions. The generator is a rule-based planner: it reads the exam pattern and BrainStride’s chapter weights from past papers and decides how many questions each chapter gets, so the result is the same every time for the same settings. The AI part of BrainStride is the tutor, which picks your next practice questions from a teacher-checked bank based on the mistakes you have made.
No. The paper plan is built in your browser, nothing is sent to a server and there is no sign-up. Print it or copy it as text if you want to keep it. The free BrainStride diagnostic is a separate, optional step if you want a plan built around your own mistakes.
Exam patterns are from the official information bulletins. Chapter weights are BrainStride estimates from past papers, not official data.
The 20-minute diagnostic names them — then every practice set and every generated test can lean on them.