In sponges, spicules are secreted by ____.
A) amoeboid cells
B) choanocytes
C) sperm cells
D) porocytes
E) pinacoderm
Correct Answer:
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Q21: Found mostly in marine environments, members of
Q22: Species in the _ Lophotrochozoan phylum have
Q23: Like other members of their phylum, jellyfishes
Q24: The _Lophotrochozoan phylum contains the most species,
Q25: Found mostly in freshwater, members of the
Q27: The members of the _ Cnidarian lineage
Q28: Found mostly in marine environments, members of
Q29: The beating flagellae of _ maintain a
Q30: Members of the _ Cnidarian lineage exist
Q31: Members of the _ phylum have radial
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