The leeches used by doctors to prevent blood clotting and stimulate the growth of blood vessels in patients recovering from reconstructive surgery are members of the phylum:
A) Cnidaria.
B) Platyhelminthes.
C) Annelida.
D) Arthropoda.
E) Nematoda.
Correct Answer:
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Q61: Members of the taxonomic group _ are
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Q63: The only invertebrates capable of flight are
Q64: Parasitic tapeworms are members of the phylum:
A)Cnidaria.
B)Platyhelminthes.
C)Annelida.
D)Arthropoda.
E)Nematoda.
Q65: Flatworms have a coelom that is only
Q67: Animal cells lack a cell wall. True
Q68: Sea stars (starfish)are bilaterally symmetrical at one
Q69: Sponges are radially symmetrical. True or False?
Q70: A closed circulatory system is characteristic of:
A)flatworms.
B)annelids.
C)cnidarians.
D)sponges.
E)comb
Q71: Charles Darwin wrote that members of the
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