Given below are the list of plant-derived alkaloids and their uses in modern medicine:

Alkaloids	Uses
A. Caffeine	i. Antineoplastic used to treat leukemia and other cancers
B. Morphine	ii. Traditional anti-malarial agent
C. Quinine	iii. Powerful narcotic analgesic
D. Vincristine	iv. Widely used central nervous system stimulant

Which one of the following options represents all correct matches?

Correct option is D

Correct Answer: (4) A-(iv), B-(iii), C-(ii), D-(i)

Explanation – Matching Alkaloids with Their Modern Medicinal Uses:

A. Caffeine → (iv) Widely used CNS stimulant

Correct

• Caffeine is a natural stimulant found in coffee, tea, and other plants.

• It acts as a central nervous system stimulant, enhancing alertness and reducing fatigue.

B. Morphine → (iii) Powerful narcotic analgesic

Correct

• Morphine is a potent opioid alkaloid derived from the opium poppy (Papaver somniferum).

• It is used for severe pain relief.

C. Quinine → (ii) Traditional anti-malarial agent

Correct

• Quinine is obtained from the bark of the cinchona tree.

• Historically used for treating malaria.

D. Vincristine → (i) Antineoplastic used to treat leukemia and other cancers

Correct

• Vincristine is a plant alkaloid derived from Catharanthus roseus (Madagascar periwinkle).

• It is used as a chemotherapy agent in the treatment of various cancers like leukemia, lymphoma.