Question

how does the locomotion in fish take placeand in Earthworm differences?
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Answer 1

Answer:

earthworm

The body of an earthworm is made up of many rings joined end to end. An earthworm does not have bones. It has muscles that help to extend and shorten the body. During movement, the earthworm first extends the front part of the body, keeping the rear portion fixed to the ground. Then it fixes the front end and releases the rear end. It then shortens the body and pulls the rear end forward. This makes it move forward by a small distance. Repeating such muscle expansions and contractions, the earthworm can move through soil.  

The body secretes a slimy substance to help the movement. Also under the body are large numbers of tiny bristles (hair like structures) projecting out. The bristles are connected with the muscles and help to get a good grip on the ground.  

The earthworm, actually, eats its way through the soil! Its body then throws away the undigested part of the material that it eats. This activity of an earthworm makes the soil more useful for plants.

Explanation:

fish = The head and tail of the fish are smaller than the middle portion of the body, and the body tapers at both ends. This body shape is called streamlined. The shape is such that water can flow around it easily and allow the fish to move fast in water.

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