Question

What characteristics are used to identify the earthworms?

Answer 1

In gardens, earthworms can be traced by their fecal deposits known as worm castings on the soil surface.

The earthworms can be identified using the following characteristics:

1. Long and cylindrical narrow body.
2. Bilateral symmetry.
3. It is light brown in colour with a purple tinge at the anterior end.
4. The division of the body into many segments or metameres.
5. The dorsal surface of the body is marked by a dark mid-dorsal line.
6. In mature worms, segments 14-17 may be found swollen with a glandular thickening of the skin called the clitellum.