Biology: The Dynamics of Life, California Edition

Section 2: Cnidarians

Cnidarians

1.
Which of these organisms is NOT a cnidarian?
A)jellyfishes
B)corals
C)sponges
D)sea anemones
2.
Which statement is NOT true?
A)Some species of cnidarians reproduce sexually.
B)A cnidarian uses its tentacles to capture food.
C)A medusa is the sessile form of a cnidarian.
D)Corals and hydras are examples of cnidarians.
3.
__________ are used by cnidarians to poison their prey.
A)Spicules
B)Nematocysts
C)Ganglia
D)Polyps
4.
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What cnidarian body form is shown in this illustration?
A)blastula
B)polyp
C)larva
D)medusa
5.
Which of these classes do sea anemones belong to?
A)Hydrozoans
B)Anthozoans
C)Cubozoans
D)Scyphozoans
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