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Aquatic arthropods and mollusks use which organ for respiration?

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in Biology – Class 11 by (272k points)
Aquatic arthropods and mollusks use which organ for respiration?

(a) Lungs

(b) Gills

(c) Eyes

(d) Nose

This question was addressed to me during an interview.

My doubt is from Respiration in Animals in chapter Breathing and Exchange of Gases of Biology – Class 11

1 Answer

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Best answer
Right choice is (b) Gills

The explanation is: Since aquatic arthropods and mollusks are mainly in water, they use gills for respiration. These gills are present as outgrowths to their skin, which is covered by the exoskeleton. The exchange of gases takes place through these gills.

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