Due to presence of clitellum, the body is divisible into_______ parts

Options

A. 2
B. 3
C. 4
D. 5

Answer

To answer the question regarding how many parts the body of an earthworm is divisible into due to the presence of the clitellum, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Clitellum**: The clitellum is a thick, glandular structure found in certain annelids, particularly earthworms. It is a non-segmented part of the body wall and appears as a prominent circular band.

**Hint**: Remember that the clitellum is a specific structure that plays a role in reproduction.

2. **Identify the Location of the Clitellum**: In earthworms, the clitellum is located in segments 14, 15, and 16. This is important because it helps us determine how the body is divided.

**Hint**: Focus on the segments where the clitellum is found to understand its role in body division.

3. **Determine the Function of the Clitellum**: The clitellum secretes mucus and albumin, which are essential for the formation of a cocoon during reproduction. This secretion is crucial for the reproductive process.

**Hint**: Think about how the clitellum contributes to the life cycle of the earthworm.

4. **Calculate the Number of Divisions**: Since the clitellum spans segments 14, 15, and 16, it effectively divides the body into three distinct parts:
- The anterior part (segments before the clitellum)
- The clitellum itself (segments 14, 15, 16)
- The posterior part (segments after the clitellum)

**Hint**: Visualize the segments of the earthworm to see how the clitellum divides the body.

5. **Conclusion**: Therefore, due to the presence of the clitellum, the body of the earthworm is divisible into **three parts**.

### Final Answer:
The body is divisible into **3 parts**.