Which one of the following groups of these animals exhibit similar respiratory organs?

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Crocodile, crow, cat

Earthworm, tapeworm and silkworm

Earthworm, frog and cockroach

Shark, snail and scorpion

answer is D.

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Detailed Solution

Reptiles (e.g., crocodile), birds (e.g., crow) and mammals (e.g., cat) respire through lungs.

Shark (Chondrichthyes) and snail (Mollusca) respires through gills whereas scorpion (Arthropoda) respires through book lungs.

Earthworm (Annelida) and tapeworm (Platyhelminthes) respires through body surface, whereas silkworm respires through tracheae (not body surface).

Earthworm (Annelida) and frog (Amphibia) respires through skin, whereas cockroach respires through tracheae (not skin).

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