Class XII · Biology practice

Human Health and Disease PYQs

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24 questions in this collection · Page 3 of 3

Question 21 of 24

🟢 Re NEET 2026 📘 CLASS XII

Human Health And Disease

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

Colostrum is rich in IgA antibodies that provide passive immunity to the newborn.

Question 22 of 24

🟢 Re NEET 2026 📘 CLASS XII

Human Health And Disease

Which of the following statements is correct about Plasmodium?

The asexual life cycle occurs in humans, whereas fertilization and sexual reproduction occur inside the gut of the female Anopheles mosquito.

Question 23 of 24

🟢 NEET 2026 📘 CLASS XII

Human Health And Disease

Match List-I with List-II:

List-I (Drug)	List-II (Effect)
A. Nicotine	I. Causes sense of euphoria and increased energy
B. Morphine	II. Stimulates adrenal gland to release catecholamines into blood circulation
C. Heroin	III. Effective sedative and painkiller
D. Cocaine	IV. A depressant; slows down body function

Nicotine stimulates catecholamine release. Morphine is a sedative and painkiller. Heroin is a depressant. Cocaine causes euphoria and increased energy.

Question 24 of 24

🟢 NEET 2026 📘 CLASS XII

Human Health And Disease

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

(A) The parasites reproduce asexually in RBCs, bursting the cells.
(B) The parasites reproduce asexually in liver cells, bursting the cells and releasing into blood.
(C) Gametocytes develop in RBCs.
(D) Sporozoites reach the liver through the blood.
(E) Female mosquito injects sporozoites into humans during bite.

Choose the correct answer from the options given below:

Female Anopheles injects sporozoites into humans. They first infect liver cells, then RBCs where repeated asexual multiplication occurs, followed by formation of gametocytes.

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