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Question
What characteristics are used to identify the earthworms?
Solution
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:
- Long and cylindrical narrow body.
- Bilateral symmetry.
- It is light brown in colour with a purple tinge at the anterior end.
- The division of the body into many segments or metameres.
- The dorsal surface of the body is marked by a dark mid-dorsal line.
- In mature worms, segments 14-17 may be found swollen with a glandular thickening of the skin called the clitellum.
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