Question

With respect to respiratory apparatus, select the incorrect pair.

• A. Insects- Tracheoles
• B. Amphibians- Skin and lungs
• C. Starfish- Dermal branchiae
• D. Crustacean- Lungs

Answer 1

The correct option is D Crustacean- Lungs

Smaller crustaceans respire through their body surface by diffusion and larger crustaceans respire with gills. In order to breathe on land, crustaceans keep these gills moist, so that, oxygen in the air can be absorbed. During respiration, these oxygen molecules first dissolve into a layer of moisture surrounding a thin membrane. Then these molecules, cross through the membrane and enter the circulatory system (blood) of the crab.

Hence the correct option is D.