A sponge is an animal with three different types of cells. It is an aquatic invertebrate that has no true tissues or organs. A sponge is a sessile, filter feeder. It contains collar cells that line the cavity and are used to filter food into the sponge. Sponges can reproduce asexually and sexually. In some sponges, support is provided by a simple skeleton made of a network of tough, flexible protein fibers called spongin. Other sponges have skeletons consisting of spicules.


What is spongin?


What type of organism is a sponge? Animal or plant? Any classification information?


Describe any three types of cells found in a sponge.

How do sponges eat and gain nutrients?


How do sponges reproduce?

Describing your learning or something interesting about sponges.

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