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Porifera

Which of the ...

Question

Which of the following phyla have a cellular grade of organisation?

A

Porifera

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B

Cnidaria

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C

Aschelminthes

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D

Platyhelminthes

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Solution

The correct option is A Porifera
A cellular grade of organisation is an aggregation of cells that are functionally differentiated. Such cells do not become organised into true tissues but may form definite patterns or layers. Sponges, belonging to the phylum Porifera, are at this level of organisation.

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