Question

about Earthworms .....​

Answer 1

Answer:

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➡An earthworm has a streamlined body with no antennae or fins or arms or legs! This streamlined shape is an adaptation to living in narrow burrows underground and the need to move easily through the soil. An earthworm has circular muscles that surround each body segment.

Explanation:

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Answer 2

Earthworm

It is a worm with segments all over its body hence Phylum: Annelida.

Features of Phylum (Specific):

Body is segmented, segments are called metameres.metameres.skin is moist.Chitinous setae, bristles, body wall muscles helps in locomotion.After 13th segment clitellum seen in Earthworm (14- 16 segment).

Adaptive Features

1) Earthworm lives in soil by making burrows in it. The cylindrical body helps in pushing the body into the soil.

2) it feeds on soil, the anterior end has prostomium which sense the soul and helps it to eat the soil and convert it into fertile soil hence called fem

er's friend.

3) Skin is always kept moist with the help of mucus glands, so soil does not stick to the body and helps the worm to breathe through the skin.

4) During rainy season the worms come out as burrows are filled with water. This is the mating time of worms .

5) It is hermaphrodite, both male and female genital pores are seen.

6) The segments on the body are called setae.

7) The brown colours helps it to camusflage with soil and protect form enemies .