Multiple choice

In which of the following living organisms is skin a necessary organ for respiration?

  1. Birds

  2. Rabbit

  3. Frogs

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The skin does not merely protect the frog but helps in respiration. Fine blood vessels run throughout the frog's skin; oxygen can pass through the membranous skin, thereby entering directly into the blood. When a frog submerges beneath the water, all its respiration takes place through the skin. Oxygen is obtained directly from the water.

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