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Most fish do not sink in water because of the presence...

This question belongs to General Knowledge Biology
Biology
?

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

Answer & Solution
Correct Answer: Option A
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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1 Comment
Dilip JHA
Dilip JHA 6 years ago
According to me 1,2,3 all are correct.

Air sacs also help in sinking
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