Major trends in thevolution of animals include
A) cephalization, the development of a definite head region.
B) the development of types of symmetry.
C) variation in coelomic cavities.
D) the development of segments.
E) all of these.
Correct Answer:
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Q10: Sponges are _.
A) herbivores
B) filter feeders
C) scavengers
D)
Q26: Which of thfollowing arcnidarian body shapes?
A)spongiforms
B)polyps
C)medusae
D)spongiforms and
Q27: Spongcells obtain nutrients by
A)absorbing food that diffuses
Q28: Which of thfollowing cushions anprotects internal organs
Q30: An animal with bilateral symmetry
A)has a left
Q32: A digestivtrack is saito bcompletif it
A)possesses specialized
Q33: In a sponge, which of thfollowing cells
Q34: Unlikother animals, sponges lack
A)a digestive track.
B)a symmetry
Q35: Which of thfollowing animals lack a "true"
Q36: Radial organisms such as _ havno front
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