A digestivtrack is saito bcompletif it
A) possesses specialized regions for different digestive tasks.
B) produces acids and contains enzymes.
C) is a one-way tube with a mouth and an anus.
D) is surrounded by muscles.
E) is all of these.
Correct Answer:
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Q10: Sponges are _.
A) herbivores
B) filter feeders
C) scavengers
D)
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
Q31: Major trends in thevolution of animals include
A)cephalization,
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
Q37: A jellylikmatrix is founin which of thfollowing
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