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Question

Which of the following living organism move with the help of coelomic fluid?

A
Hydra
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B
Frog
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C
Starfish
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D
Earthworm
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Solution

The correct option is B Earthworm
Annelida animals possess longitudinal and circular muscles which help in locomotion. Aquatic annelids like Nereis possess lateral appendages, parapodia, which help in swimming. In terrestrial annelids like an earthworm, coelomic fluid aids in the movement. The economics fluid works as a hydraulic skeleton, aids in locomotion. So, the correct answer is option D.

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