The one among the following that has no blood, but respires is

Options :
  1. Fish
  2. Earthworm
  3. Hydra
  4. Cockroach
Answer and Explanation :-

Answer: Option 3

Explanation:

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When one door of happiness closes, another opens but often we look so long at the closed door that we do not see the one which has been opened for us.
-Helen Keller