Draw a neat labelled diagram of circulatory system of earthworm. Discuss hearts of earthworm.

Explanation

### Step-by-Step Solution

**Step 1: Draw the Diagram of the Circulatory System of Earthworm**

1. Start by sketching the outline of an earthworm.
2. Draw the dorsal blood vessel running along the top side of the worm.
3. Draw the ventral blood vessel running along the bottom side of the worm.
4. Indicate the aortic arches (5 pairs) connecting the dorsal and ventral vessels, located in segments 7, 8, 9, 10, and 11.
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