Biology: The Dynamics of Life, North Carolina 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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