An animal digestive tract that consists of two openings (a mouth and anus) is called
A) an excretory system.
B) an alimentary canal.
C) an intestine.
D) an avian (bird) crop.
Correct Answer:
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Q3: Digestion is the
A) absorption of nutrients suspended
Q4: The main function of an earthworm's gizzard
Q8: What happens to nutrient macromolecules in an
Q13: Most animals are
A)bulk feeders.
B)filter feeders.
C)suspension feeders.
D)fluid feeders.
Q14: Nectarivores drink flower nectar that is a
Q19: Through digestion, nucleic acids are broken down
Q19: Digestion begins in the
A) small intestine.
B) oral
Q21: The mucus-producing cells that line the stomach
A)increase
Q29: The function of the sphincter between the
Q34: Most gastric ulcers are caused by
A) overuse
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