How many are there pairs of spermathecal pores?

Explanation

**Step-by-Step Solution:**

1. **Understanding Spermathecal Pores**: Spermathecal pores are openings in the body of certain organisms, including earthworms, where sperm is stored. They play a crucial role in the reproductive process.

2. **Identifying the Organism**: The question specifically refers to earthworms, which are segmented worms belonging to the phylum Annelida.

3. **Locating the Pores**: In earthworms, spermathecal pores are located in specific segments of the body. The body of an earthworm is divided into segments, and these pores are found in certain segments.

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