In Earthworm, testes occur in segments

Options

A. 11 and 12
B. 12 and 13
C. 14 and 15
D. 10 and 11

Answer

To answer the question regarding the segments in which the testes occur in an earthworm, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Anatomy of Earthworm**: Earthworms are hermaphrodites, meaning they possess both male and female reproductive organs. This is crucial to know as it helps in understanding where the testes are located.

2. **Identify the Location of Testes**: In the male reproductive system of the earthworm, the testes are located beneath the esophagus.

3. **Locate the Specific Segments**: The testes are found in two pairs of testis sacs. According to the information provided, these testis sacs are specifically located in the 10th and 11th segments of the earthworm.

4. **Confirm with Seminal Vesicles**: It is also important to note that the seminal vesicles, which are part of the male reproductive system, are located in the 12th and 13th segments. This information helps to differentiate between the locations of the testes and seminal vesicles.

5. **Conclude the Answer**: Based on the above information, we can conclude that the testes in earthworms occur in segments 10 and 11.

### Final Answer:
The testes in earthworms occur in segments **10 and 11**.

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