________ are characterized by having a pseudocoelom.
A) Roundworms
B) Annelids
C) Arthropods
D) Chordates
E) Cnidarians
Correct Answer:
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Q33: Flatworms lack:
A)a respiratory system.
B)a reproductive system.
C)a nervous
Q34: Ecdysozoans:
A)have trochophore larva.
B)include mollusks, annelids, and flatworms.
C)have
Q35: A(n)_ provides support and protection to arthropods.
A)cytoskeleton
B)exoskeleton
C)hydrostatic
Q36: Which of these groups is characterized by
Q37: Which of these groups is characterized by
Q39: The phylum Nematoda includes which of the
Q40: A cnidarian that builds a calcium carbonate
Q41: Which of the following animals are arachnids?
A)spiders
B)wasps
C)grasshoppers
D)flukes
E)beetles
Q42: Members of the phylum _are characterized by
Q43: The tube feet of echinoderms that are
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