alleryStart learning →Which animal is given as an example of one with an alimentary canal?
AThe jellyfish
BThe flatworm
CThe comb jelly
DThe earthworm
Answer & Solution
Correct answer: D. The earthworm
1. The alimentary canal is a one-way tube with two separate openings.
2. Earthworms are the stated example of an animal built this way.
3. Their food passes mouth, esophagus, crop, gizzard, intestine and anus in order.
4. Flatworms, comb jellies and jellyfish use a gastrovascular cavity instead.
_Source: OpenStax Biology 1e (CC BY 4.0), Ch 34 "Animal Nutrition and the Digestive System", section Invertebrate Digestive Systems_
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