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Biology CBSE Live product
Class 7 (2025-26)
Life processes in animals
Life processes in animals - Respiration in other animals
9.
Body systems working together
Question:
3
m.
Answer the following and justify your answer:
1.
A frog lives in water and on land as an adult. How does it breathe in these two places?
Frogs absorb oxygen via their moist skin underwater and through lungs in air
Frogs breathe through their skin in water and use lungs on land
Underwater, frogs respire cutaneously; on land, they use pulmonary respiration
2.
Why do amphibians need moist skin for breathing?
Amphibians need dry skin because oxygen diffuses through dry skin for respiration
Amphibians need moist skin because oxygen diffuses through wet skin for respiration
Amphibians need moist skin because carbon dioxide diffuses through wet skin for respiration
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