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Morphology of Cockroach

Which of the ...

Question

Which of the following groups of animals have a partially open, fluid filled body cavity which develop from the first formed embryonic cavity blastocoel?

A

Flatworms

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B

Earthworms

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C

Roundworms

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D

Shipworms

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Solution

The correct option is C Roundworms
Roundworms are pseudocoelomate animals. The body cavity develops from the blastocoel and is not completely lined by the mesoderm.

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