Question

List 2 distinguishing features between porifera and coelenterate animals

Answer 1

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Poriferans show cellular grade of organisation whereas coelenterates show tissue grade of organisation. Poriferans show numerous pores called ostia which are absent in coelenterates. Mouth is absent in poriferans but present in coelenterates. Coelenteron is present in coelenterates but absent in poriferans.

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Answer 2

Porifera.....

Cellular level of body organisation.

Single osculum and a large no. Of

ostia present.

Coelenterate.....

Tissue level of body organisation.

Coelentron cavity present.

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