Which of the following is NOT true about sponges?
A) They have few predators or pathogens.
B) Some groups have sharp spicules of silica or calcium carbonate.
C) Some species secrete a slimy body coating.
D) They can harvest sea anemone nematocysts and use them for their own defense.
E) Disease and overharvesting have caused population declines.
Correct Answer:
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Q3: Cells of the outer surface of a
Q10: Which of the following are most closely
Q16: Poriferans are
A) herbivores.
B) filter feeders.
C) scavengers.
D) predators.
E)
Q25: Which of the following organisms exhibits cephalization?
A)snail
B)sea
Q26: Feeding in sponges is dependent on
A)collar cells.
B)pores.
C)water
Q29: Trichoplax adhaerens has no nerve cells, but
Q30: Trichoplax adhaerens is considered the closest animal
Q31: Trichoplax adhaerens resembles?
A)snail
B)sea anemone
C)sea star
D)sponge
E)a hairy sticky
Q32: Use the figure above to answer questions
Q33: Sponges have which of the following?
A)symmetry
B)organs
C)anus
D)spicules
E)appendages
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