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Question

Which of the following is not a characteristic feature of sponges?

A
Cellular level of organisation
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B
Presence of ostia
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C
Intracellular digestion
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D
Body supported by chitin
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Solution

The correct option is D Body supported by chitin
In sponges, body is not supported by chitin. Their body is supported by calcareous or siliceous spicules or protein spongin fibres.
Hence the correct option is D.

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