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.