What are pleopods? Give their function.

Explanation

**Step-by-Step Solution:**

1. **Definition of Pleopods**: Pleopods are specialized appendages found in certain crustaceans, particularly in prawns. They are located on the abdomen and are often described as oar-like structures.

2. **Location**: In prawns, pleopods are situated on the ventral (belly) side of the body, beneath the dorsal (back) side. This positioning is crucial for their function.

3. **Function**: The primary function of pleopods is to aid in swimming. They act like oars, allowing the prawns to propel themselves through the water. This is essential for their movement and survival in aquatic environments.

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