From which part of Cinchona plant, a drug is obtained
(a) bark
(b) pericarp
(c) leaf
(d) endosperm

Options

A. bark
B. pericarp
C. leaf
D. endosperm

Answer

To answer the question regarding which part of the Cinchona plant is used to obtain a drug, we can follow these steps:

1. **Identify the Plant**: The Cinchona plant is scientifically known as Cinchona officinalis. It belongs to the Rubiaceae family.

2. **Determine the Source of the Drug**: The drug obtained from the Cinchona plant is quinine, which is known for its use in treating malaria.

3. **Identify the Part of the Plant Used**: The bark of the Cinchona plant is specifically used to extract quinine.

4. **Evaluate the Options**:
- (a) Bark - This is the correct answer as it is the part of the plant used to obtain quinine.
- (b) Pericarp - This is incorrect as it refers to the fruit's outer layer.
- (c) Leaf - This is incorrect as leaves are not used for quinine extraction.
- (d) Endosperm - This is incorrect as it refers to the tissue that provides nutrition to the developing plant embryo.

5. **Conclusion**: Based on the information, the correct answer is (a) bark.