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Biology

Human Health and Disease

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

Human Health and Disease carried 6 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 Human Health and Disease, with the answer and the working. Try before you peek.

Question 1 · NEET 2026

Which of the following are secondary lymphoid organs? Statement I: Bone marrow Statement II: Tonsils Statement III: Spleen Statement IV: Thymus Choose the correct answer from the options given below:
  1. A.(I) and (II) only
  2. B.(II) and (III) only
  3. C.(II) and (IV) only
  4. D.(I) and (IV) only
Answer and explanation

Answer: B

Primary lymphoid organs are where lymphocytes are produced and mature - the bone marrow and the thymus. Secondary lymphoid organs are where mature lymphocytes go to meet antigen and mount a response: the spleen, lymph nodes, tonsils, Peyer's patches of the small intestine and the appendix. Tonsils and spleen therefore belong to the secondary group. NCERT Class 12, Human Health and Disease.

Question 2 · NEET 2026

Which of the following is used as an effective sedative and painkiller for treating post-surgery patients?
  1. A.Interferon
  2. B.Antibiotics
  3. C.Morphine
  4. D.Anti-retroviral drugs
Answer and explanation

Answer: C

Morphine is an opioid extracted from the latex of Papaver somniferum. It binds to receptors in the central nervous system and is a very effective sedative and painkiller, which is exactly why it is used for patients recovering from surgery - and also why it carries a high risk of abuse and dependence. NCERT Class 12, Human Health and Disease.

How to practise Human Health and Disease

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 Human Health and Disease have in NEET 2026?

Human Health and Disease carried 6 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Human Health and Disease 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 Human Health and Disease 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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