Biology
Animal Phylums
"Write a three sentence description for each phylum and list two examples for each. Also, draw a picture of a common example from each. (or cut out of a magazine). You will be graded on how accurate your information is as well as neatness."
Sponges (Porifera): Poriferans don't have mouths; instead, they have tiny pores in their outer walls through which water is drawn. Cells in the sponge walls filter nutrients from the water as the water is carried through the body. The flow of water through the sponge is unidirectional, driven by beating of flagella.
Examples: Glass Sponges and Calcareous Sponges.
Picture:
Cnidarians: These are radially symmetrical. The mouth, located at the center of one end of the body, opens into a gastro vascular cavity, which is used for digestion and distribution of food. Cnidarians have a body wall composed of three layers: an outer epidermis, an inner gastro dermis, and a middle mesogloea.
Examples: Sea Anemones......
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