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ExamsNEETBiology

Closed circulatory system occurs in

  1. snail
  2. cockroach
  3. cuttle fish
  4. all of these

Correct answer: cuttle fish

Solution

Cuttlefish, a cephalopod mollusk, has a closed circulatory system in which blood remains within vessels. Snail has an open system, and cockroach is an insect with an open circulatory system.

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