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Biology

Evolution

A Biology chapter of the NEET syllabus, and how to practise it for the computer-based exam.

Exam rules change between cycles. Confirm dates, syllabus and pattern against NTA's official site. We are not NTA.

Weightage: what the paper actually did

Evolution carried 9 questions in the NEET 2026 paper. One paper is a data point, not a destiny: NTA moves weight between chapters every cycle, which is why the weightage tables deserve care. The stable facts are the paper's shape: 180 questions, 720 marks, +4 right, −1 wrong.

Sample PYQs from this chapter

Real questions NTA asked from Evolution, with the answer and the working. Try before you peek.

Question 1 · NEET 2026

Natural selection can lead to _________. Statement I: stabilisation Statement II: genetic drift Statement III: directional change Statement IV: disruption Choose the correct answer from the options given below :
  1. A.(I) only
  2. B.(I), (III) and (IV) only
  3. C.(I), (II), (III) and (IV)
  4. D.(I) and (III) only
Answer and explanation

Answer: B

Natural selection operates in three modes, distinguished by which part of the trait distribution it favours: stabilising selection favours the average and narrows variation, directional selection shifts the mean toward one extreme, and disruptive selection favours both extremes and can split the population into two peaks. GENETIC DRIFT is not one of them - it is random change in allele frequency caused by chance in small populations, and is explicitly a non-selective mechanism. NCERT Class 12, Evolution.

Question 2 · NEET 2020

Embryological support for evolution was disapproved by
  1. A.Alfred Wallace
  2. B.Charles Darwin
  3. C.Oparin
  4. D.Karl Ernst von Baer
Answer and explanation

Answer: D

Karl Ernst von Baer criticized the idea that embryos of different species pass through the same stages of development, which was a key argument for embryological support of evolution. Chapter: Evolution.

How to practise Evolution

Chapter by chapter, against real past-paper questions, on a screen: NEET is computer based from 2027. Read the chapter once, then attempt its PYQs until your accuracy stops climbing, and let the wrong answers tell you which lines to reread. If the chapter keeps refusing to stick, that has its own guide. There is also a free NEET mini mock with answers.

Nearby Biology chapters

Questions

How many questions did Evolution have in NEET 2026?

Evolution carried 9 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Evolution PYQs for NEET?

Explore available chapter-wise NEET practice in BrainIt, free until the 2027 exam. Review explanations and track chapter accuracy to guide your revision. Sample questions from this chapter are on this page.

Is Evolution important for NEET 2027?

It is part of the Biology syllabus the paper draws from, and NEET 2027 is computer based, so practise it on a screen. Your own accuracy in the chapter matters more than any weightage table: a heavy chapter you already score well on needs less time than a light one you keep missing.

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