Blood corpuscles in earthworm are produced by

Options

A. a) Lateral heart
B. b) Blood glands
C. c) Anterior loops
D. d) Blood vessels

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the source of blood corpuscles (blood cells) in earthworms. We need to identify which of the given options is responsible for their production.

2. **Analyzing the Options**:
- **Option A: Lateral Heart**: Earthworms have lateral hearts located in the 7th and 9th segments. However, these hearts are primarily involved in circulation and do not produce blood corpuscles. Thus, this option is incorrect.

- **Option B: Blood Glands**: Blood glands are present in the 4th, 5th, and 6th segments of the earthworm. They are responsible for the production of blood corpuscles and hemoglobin. This option appears to be correct.

- **Option C: Anterior Loops**: These loops connect the supraesophageal vessel with the ventral esophageal vessel and are located in the 10th and 11th segments. They do not produce blood corpuscles, making this option incorrect.

- **Option D: Blood Vessels**: Blood vessels are responsible for transporting blood but do not produce blood corpuscles. Therefore, this option is also incorrect.

3. **Conclusion**: After analyzing all the options, the only correct answer is **Option B: Blood Glands**, as they are responsible for the production of blood corpuscles in earthworms.

**Final Answer**: Blood corpuscles in earthworm are produced by **blood glands** (Option B).

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