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Biology

Structural Organisation in Animals

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

Structural Organisation in Animals carried 4 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 Structural Organisation in Animals, with the answer and the working. Try before you peek.

Question 1 · NEET 2020

Cuboidal epithelium with brush border of microvilli is found in
  1. A.Ducts of salivary glands
  2. B.Proximal convoluted tubule of nephron
  3. C.Eustachian tube
  4. D.Lining of intestine
Answer and explanation

Answer: B

Cuboidal epithelium with a brush border of microvilli is found in the proximal convoluted tubule of the nephron, where it increases the surface area for reabsorption. Chapter: Structural Organisation in Animals.

Question 2 · NEET 2026

In water, frogs respire using _____________.
  1. A.skin
  2. B.buccal cavity
  3. C.lungs
  4. D.trachea
Answer and explanation

Answer: A

Submerged frogs rely entirely on CUTANEOUS respiration: the moist, thin, richly vascularised skin allows dissolved oxygen and carbon dioxide to diffuse directly across it. On land the frog switches to buccal cavity respiration and pulmonary respiration through the lungs. The skin route is the only one available underwater. NCERT Class 11, Structural Organisation in Animals.

How to practise Structural Organisation in Animals

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 Structural Organisation in Animals have in NEET 2026?

Structural Organisation in Animals carried 4 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Structural Organisation in Animals 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 Structural Organisation in Animals 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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