Biology, asked by sanjaysingh22368, 9 months ago

49. Which of the following animals lack alimentary canals
(complete digestive systems)?
(a) Earthworm
(b) Jellyfish
(c) Insect
(d) Fish

Answers

Answered by Vishal101100
4

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b)Jelly Fish

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Answered by Shachi123
2

Answer:

(b) Jellyfish

Explanation:

ANSWER

Jellyfish is a coelenterate and lacks alimentary canal. Digestion is mainly intracellular in it. It can be extracellular also inside the gastrovascular cavity wherein digestive enzymes are secreted by endothelial cells.

In earthworm, insects and fishes, there is a complete digestive system with the mouth as well as anus and digestion take place in the alimentary canal. Thus, the correct answer is option B.

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