Quinine used in malarial disease is extracted from

Options

A. Leaves of Ocimum
B. Bark of Cinchona
C. Bark of Cinnamon
D. Stem of Hevea

Answer

To solve the question regarding the source of quinine used in the treatment of malaria, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks where quinine, a treatment for malaria, is extracted from.

2. **Evaluate the Options**:
- **Option A: Leaves of Osmium**: This refers to the Tulsi plant, which is known for its various medicinal properties, such as antimicrobial effects and anti-inflammatory properties. However, it is not known for quinine extraction.
- **Option B: Bark of Cinchona**: This is the correct option. Quinine is specifically extracted from the bark of the Cinchona tree, and it is well-known for its effectiveness in treating malaria.
- **Option C: Bark of Cinnamon**: Cinnamon is a common spice with medicinal properties, but it does not produce quinine.
- **Option D: Stem of Hevea**: This plant is known as the rubber plant, and its stem is used for extracting rubber latex, not quinine.

3. **Identify the Correct Answer**: After evaluating all the options, we conclude that the correct answer is **Option B: Bark of Cinchona**.

### Final Answer:
Quinine used in malarial disease is extracted from the **bark of Cinchona**.

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