Sponges are believed to have arisen from the choanoflagellates because they possess:
A) amebocytes.
B) spicules.
C) spongin.
D) collar cells.
E) oscula.
Correct Answer:
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Q12: Traditionally, the _ were assigned to the
Q13: Digestion in a sponge takes place in:
A)the
Q14: Within the phylum Cnidaria, corals are most
Q15: The Portuguese man-of-war belongs to the class:
A)CnidozoA.
B)ScyphozoA.
C)HydrozoA.
D)AnthozoA.
E)Cubezoa.
Q16: Although corals can capture prey, they also
Q18: Ctenophores capture food by:
A)sticky mucus on their
Q19: Among the scyphozoans, the _ stage is
Q20: Most sponges are _, meaning that one
Q21: Like the cnidarians, flatworms depend on _
Q22: Figure 31-2
Use the figure to answer the
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