Which structure in earthworm is capable of secreting hormones?

Options

A. Nerve Cord
B. Lymph gland
C. Cerebral ganglia
D. Chloragogen cells

Answer

**Step-by-Step Solution:**

1. **Identify the Structures in Earthworm**:
- The question asks about which structure in earthworms is capable of secreting hormones. The relevant structures to consider are the nerve cord, cerebral ganglia, lymph glands, and chloragogin cells.

2. **Analyze the Nerve Cord and Cerebral Ganglia**:
- The nerve cord and cerebral ganglia are components of the nervous system in earthworms. They primarily function in transmitting sensory and motor impulses but are not known for hormone secretion.

3. **Examine Lymph Glands**:
- Lymph glands in earthworms are involved in the immune response, particularly in the destruction of bacteria. However, they are not primarily known for hormone secretion.

4. **Consider Chloragogin Cells**:
- Chloragogin cells are found in the earthworm and play a role in storing extra glucose in the form of glycogen. They also help in detoxifying the body by neutralizing toxins. Importantly, they are involved in the secretion of substances that can be considered hormonal in function.

5. **Conclusion**:
- Based on the analysis, the structure in earthworms that is capable of secreting hormones is the **chloragogin cells**. Therefore, the correct answer is option 4.

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