Question

3 points on demospongiae

Answer 1

Hey mate ^_^

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Answer:
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1) They may contain skeleton of spongin fibres with or without siliceous spicules.

2) Choanocytes are small.

3) They occur in marine as well as in fresh water.

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Answer 2

HEY MATE HERE IS YOUR ANSWER

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1. CHANOCYTES are small.

2. They occur in marine.

3. They may contain skeleton.

$\rule {168} {2}$

Hope it will help you

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Ansh as ans81