Ch.10 Classification Flashcards Preview

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Flashcards in Ch.10 Classification Deck (6):
1

Porifera - nerves

Have no nerves or muscles; sessile

2

Porifera - central cavity

Filter nutrients from water drawn into a central cavity, spongocoel

3

Porifera - cell layers

Consist of two cell layers only : ectoderm and endoderm connected by noncellular mesoglea

4

Porifera - true cells and organs

No true tissues or organs although they have different types of cells.

5

Porifera cells - Choanocyte

Collar cells, line the body cavity and have flagella that circulate water

6

Porifera- the sponges , invertebrates - symmetry

No symmetry