BrainIt

Human Health and Disease: NEET previous year questions

Every Human Health and Disease question from the official NEET papers on this site, with the answer and a worked solution.

The questions come from NEET 2026, Re-NEET 2026 and NEET 2020. Each shows its answer and solution when you open it, so you can attempt it first. For what the chapter covers and how NEET tests it, see the Human Health and Disease guide.

Practise on the CBT screen9 questions, 9 minutes, marked +4 / −1Download PDF4 pages, 0.8 MB, with answers and solutions

NEET 2026 · the full paper

  1. NEET 2026 · Q139

    The following are the stages of life cycle of Plasmodium. Arrange the stages in the proper order.

    Statement I: The parasites reproduce asexually in RBCs, bursting the cells.
    Statement II: The parasites reproduce asexually in liver cells, bursting the cells and releasing into blood.
    Statement III: Gametocytes develop in RBCs.
    Statement IV: Sporozoites reach the liver through the blood.
    Statement V: Female mosquito injects sporozoites into humans during bite.

    Choose the correct answer from the options given below:

    1. (1)

      V, IV, II, I, III

    2. (2)

      I, II, III, IV, V

    3. (3)

      III, I, II, IV, V

    4. (4)

      V, III, IV, II, I

    Answer and solution

    Answer: (1)

    Infection begins when a female Anopheles mosquito injects sporozoites into the human during a bite (Statement V).
    Sporozoites travel through the blood to the liver (Statement IV).
    multiply asexually in liver cells and burst out into the blood (Statement II).
    then invade and multiply asexually in red blood cells (RBCs), rupturing them (Statement I).
    Finally gametocytes develop in the RBCs (Statement III) to be taken up by the mosquito.

    Correct order: V, IV, II, I, III.

  2. NEET 2026 · Q151

    Match List I (Drug) with List II (Effect) and choose the correct answer from the options given below.

    List I

    List II

    P) Nicotine

    I) Causes sense of euphoria and increased energy

    Q) Morphine

    II) Stimulates adrenal gland to release catecholamines into blood circulation

    R) Heroin

    III) Effective sedative and painkiller

    S) Cocaine

    IV) A depressant; slows down body function

    1. (1)

      P-III, Q-II, R-IV, S-I

    2. (2)

      P-II, Q-III, R-I, S-IV

    3. (3)

      P-II, Q-III, R-IV, S-I

    4. (4)

      P-III, Q-II, R-I, S-IV

    Answer and solution

    Answer: (3)

    Nicotine stimulates the adrenal gland to secrete catecholamines (P-II), morphine is an effective sedative and painkiller (Q-III), heroin is a depressant that slows body functions (R-IV), and cocaine produces a sense of euphoria and increased energy (S-I). This gives P-II, Q-III, R-IV, S-I, which is option (3).

Re-NEET 2026 · the full paper

  1. Re-NEET 2026 · Q165

    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. (1)

      (I) and (II) only

    2. (2)

      (II) and (III) only

    3. (3)

      (II) and (IV) only

    4. (4)

      (I) and (IV) only

    Answer and solution

    Answer: (2)

    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.

  2. Re-NEET 2026 · Q171

    Colostrum, secreted by mother during initial days of lactation, is abundant in ________.

    1. (1)

      IgG

    2. (2)

      IgM

    3. (3)

      IgA

    4. (4)

      IgD

    Answer and solution

    Answer: (3)

    Colostrum, the yellowish fluid produced in the first few days after birth, is rich in immunoglobulin A (IgA) antibodies. Because these are ready-made antibodies handed directly to the infant rather than produced by the infant itself, this is a form of NATURAL PASSIVE IMMUNITY, protecting the newborn until its own immune system matures. NCERT Class 12, Human Health and Disease.

  3. Re-NEET 2026 · Q177

    Which of the following is used as an effective sedative and painkiller for treating post-surgery patients?

    1. (1)

      Interferon

    2. (2)

      Antibiotics

    3. (3)

      Morphine

    4. (4)

      Anti-retroviral drugs

    Answer and solution

    Answer: (3)

    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.

  4. Re-NEET 2026 · Q179

    Which of the following statements is correct about Plasmodium?

    1. (1)

      Reproduces sexually in liver cells

    2. (2)

      Reproduces sexually in RBCs

    3. (3)

      Gametocytes develop in mosquito gut

    4. (4)

      Fertilization takes place in mosquito gut

    Answer and solution

    Answer: (4)

    The division of labour between the two hosts is the key to this life cycle. In the human, Plasmodium multiplies ASEXUALLY - first in liver cells, then in red blood cells, where gametocytes also form. Those gametocytes are taken up when a female Anopheles bites; only inside the mosquito's gut do the gametes fuse, so fertilisation and subsequent development happen there. The mosquito is therefore the definitive host. NCERT Class 12, Human Health and Disease.

NEET 2020 · the full paper

  1. NEET 2020 · Q22

    Match the following diseases with the causative organism and select the correct option.

    List I

    List II

    P) Typhoid

    I) Wuchereria

    Q) Pneumonia

    II) Plasmodium

    R) Filariasis

    III) Salmonella

    S) Malaria

    IV) Haemophilus

    1. (1)

      P-III, Q-IV, R-I, S-II

    2. (2)

      P-II, Q-I, R-III, S-IV

    3. (3)

      P-IV, Q-I, R-II, S-III

    4. (4)

      P-I, Q-III, R-II, S-IV

    Answer and solution

    Answer: (1)

    Typhoid-Salmonella, pneumonia-Haemophilus, filariasis-Wuchereria and malaria-Plasmodium give P-III, Q-IV, R-I, S-II. Chapter: Human Health and Disease.

  2. NEET 2020 · Q39

    The infectious stage of Plasmodium that enters the human body is

    1. (1)

      Sporozoites

    2. (2)

      Female gametocytes

    3. (3)

      Male gametocytes

    4. (4)

      Trophozoites

    Answer and solution

    Answer: (1)

    The infectious stage of Plasmodium that enters the human body is the sporozoite stage. Sporozoites are transmitted through the saliva of an infected female Anopheles mosquito. Chapter: Human Health and Disease.

  3. NEET 2020 · Q78

    Identify the wrong statement with reference to immunity.

    1. (1)

      When ready-made antibodies are directly given, it is called "Passive immunity".

    2. (2)

      Active immunity is quick and gives full response.

    3. (3)

      Foetus receives some antibodies from mother, it is an example for passive immunity.

    4. (4)

      When exposed to antigen (living or dead) antibodies are produced in the host's body. It is called "Active immunity".

    Answer and solution

    Answer: (2)

    Active immunity involves the production of antibodies by the host's immune system, which takes time to develop a full response, not immediately. Chapter: Human Health and Disease.

Practise Human Health and Disease in the app: it brings back the questions you get wrong, so the chapter improves, not just your memory of these. Or try the free CBT mock. All chapters: NEET chapter-wise PYQs.

Questions

Are these the official NEET questions on Human Health and Disease?

Yes. They are the questions NTA set in each paper, in its wording. The solutions are written by BrainIt.

Something here wrong or out of date? Email hello@brainit.pro and a person will read it.