Most fish do not sink in water because of the presence of:
I. swim bladder
II. air bladder
III. air sacs
IV. air in spongy bones

A. I and II are correct

B. II and III are correct

C. III and IV are correct

D. I, II, III and IV are correct

Answer: Option A

Solution(By Examveda Team)

Fishes have a swim bladder or air bladder which helps them to remain buoyant without sinking in water. They are present in the body cavity.

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Comments ( 1 )

  1. Dilip JHA
    Dilip JHA :
    2 years ago

    According to me 1,2,3 all are correct.

    Air sacs also help in sinking

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