3 years ago

Which of the following types of skeletal material is NOT found in at least some sponges?

Biology

1 answer:

Mazyrski [523]3 years ago

8 0

Answer:

b. muscle

Explanation:

The Sponges usually known as Porifera (pore bearers) are aquatic filter feeders. The sponges consist of structural materials (spongin, spicules) which are usually made of calcium carbonate and/or silica. These structures forms their skeletal materials giving their body a thin sheet of cells over a frame (skeleton). As invetebrate and at the unicellular level of organization, Sponges lack muscle.

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