Total number of segments (metameres) in Pheretima is -

Options

A. 50 - 70
B. 300-325
C. 100 - 120
D. 150-200

Answer

To determine the total number of segments (metameres) in Pheretima (earthworm), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Metameres":**
- Metameres refer to the segmented body structure found in certain animals, including earthworms. Each segment can perform specific functions.

2. **Identify the Options Provided:**
- The options given for the total number of segments in Pheretima are:
a) 50-70
b) 300-325
c) 100-120
d) 150-200

3. **Recall the Characteristics of Earthworms:**
- Earthworms, including Pheretima, are known to have a segmented body. Each segment is separated by ring-like structures and is capable of performing various functions.

4. **Analyze the Options:**
- Based on biological studies and literature, it is known that the number of segments in earthworms typically ranges between 100 to 200 segments.

5. **Select the Correct Answer:**
- Among the options provided, the range of 100-120 segments (option c) is the most accurate for Pheretima.

6. **Conclusion:**
- Therefore, the total number of segments (metameres) in Pheretima is between 100 and 120.

### Final Answer:
The total number of segments (metameres) in Pheretima is **100-120**.

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