During copulation in earthworms, sperms are transferred between copulating individuals from

Options

A. Female genital pore to spermathecae
B. Male genital pores to spermathecae
C. Spermathecae to cocoon
D. Male genital pores to outside

Answer

**Step-by-Step Solution:**

1. **Understanding Earthworm Reproduction**: Earthworms are hermaphrodites, meaning each individual possesses both male and female reproductive organs. However, they engage in cross-fertilization rather than self-fertilization.

2. **Cross-Fertilization Process**: During copulation, two earthworms come together. Each earthworm produces sperm and eggs, but the sperm from one earthworm fertilizes the eggs of the other.

3. **Location of Male Genital Pore**: The male genital pore, which is responsible for the transfer of sperm, is located at the 18th segment of the earthworm. This pore is situated on the ventrolateral side of the body.

4. **Sperm Transfer Mechanism**: The sperm is transferred from the male genital pore of one earthworm. The spermatic duct and prostrate duct open at this pore, allowing the sperm to exit.

5. **Receiving Structure**: The sperm is received by the spermathecae of the other earthworm. The spermathecae are specialized structures located in the intersegmental grooves between segments 5 and 6, 6 and 7, 7 and 8, and 8 and 9.

6. **Conclusion**: Therefore, during copulation in earthworms, the sperm is transferred from the male genital pore of one earthworm to the spermathecae of another earthworm.

**Final Answer**: The sperm is transferred from the male genital pore to the spermathecae.

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