THE LOWER INVETEBRATES

What type of symmetry do cnidarians have

• asymmetrical
• bilateral
• radial

Flatworms and Round worms have bilateral symmetry

• True

• False

Flatworms support their shape with three tissue layers but don't have any kind of skeleton.

• True

• False

Sponges eat by

• bottom feeding
• filter feeding
• scaveging
• they don't eat

The Cnidarian stinging cell is called:

• collar cell

• cnidocyte

• amoebocyte

Which body type is shown?

• polyp
• medusa

Which body type is shown?

• polyp
• medusa

Phylum Porifera includes the

• "stinging cells"

• "Tentacles"

• "Cleaners"

• "Sponges"

Sponges, Jellies, Flatworms and Roundworms all get their oxygen through:

• simple diffusion

• gills

• lungs

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How many openings do Cnidarians have to their Gastrovascular Cavity?

• one

• two

• three

• four