The skeleton of sponges is made up of: — Zoology | Mockzy | Mockzy

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The skeleton of sponges is made up of:

A

Bones and cartilage

B

Spicules or spongin fibres

C

Chitin

D

Calcium carbonate shells

The specialized cells in sponges that line the spongocoel and canals are:

Stinging capsules called nematocytes are found in:

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