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Biology

Biological Classification

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

Biological Classification carried 7 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 Biological Classification, with the answer and the working. Try before you peek.

Question 1 · NEET 2026

The main criteria used for Five Kingdom Classification proposed By R.H. Whittaker (1969) included. Statement I: Cell structure Statement II: Body organization Statement III: Presence of flagellum Statement IV: Reproduction Statement V: Phylogenetic relationships Choose the correct answer from the options given below:
  1. A.I, II, III, IV and V
  2. B.II, III and IV only
  3. C.I, II, IV and V only
  4. D.I, II and V only
Answer and explanation

Answer: C

Whittaker's five kingdom classification was based on cell structure (Statement I), body organisation (Statement II), mode of nutrition, reproduction (Statement IV) and phylogenetic relationships (Statement V). Presence of a flagellum (Statement III) was not one of the main criteria, so the correct set is I, II, IV and V.

Question 2 · NEET 2026

The flightless bird with forelimbs modified as paddle-like structures suited for swimming is known as:
  1. A.Struthio
  2. B.Neophron
  3. C.Aptenodytes
  4. D.Psittacula
Answer and explanation

Answer: C

Aptenodytes is the genus of penguins, flightless birds whose forelimbs are modified into paddle-like flippers used for swimming. Struthio (ostrich) is flightless but its reduced wings are used for balance while running, not swimming, while Neophron (vulture) and Psittacula (parakeet) are flying birds. Hence Aptenodytes.

How to practise Biological Classification

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 Biological Classification have in NEET 2026?

Biological Classification carried 7 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Biological Classification 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 Biological Classification 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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