Question

In fishes, gills are the respiratory organs and they are projections of which of the following parts?

• A. Nostril
• B. Alimentary canal
• C. Skin
• D. None of the above

Answer 1

The correct option is C Skin

• A majority of aquatic animals like fish and prawns breathe through special organs called gills.
• Gills are projections of the skin that help in using oxygen dissolved in water.
• Gills contain blood vessels which help in exchange of gases. Hence, In fishes gills are the respiratory organs and they are projections of skin.

So, the correct answer is 'skin'.