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Inspiratory Reserve Volume

An organism X...

Question

An organism X having breathing organs A lives on land. When organism X goes under water, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of water, it dies after a short while. A third organism Z having breathing organs C and D which lives on the banks of ponds, lakes and rivers can survive on land as well as in water equally well.

(a) What could organism X be? Name the breathing organs A.

Organism Habitat

X Land

Y Water

Z Land and water

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Solution

Answer:

Organism X is a human being. The breathing organs A are lungs. Human beings live on land and can not survive underwater for a long time unless carrying an oxygen cylinder.

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Inspiratory Reserve Volume

Standard XII Biology

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