Lungs have a large number of alveoli for....

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(B) The lungs contain millions of alveoli,which are tiny,balloon-like structures at the end of the respiratory tree.These alveoli significantly increa

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More surface area for diffusion of gases

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(B) The lungs contain millions of alveoli,which are tiny,balloon-like structures at the end of the respiratory tree.These alveoli significantly increase the total surface area available for the exchange of gases ($O_2$ and $CO_2$) between the air and the blood.According to Fick's law of diffusion,the rate of diffusion is directly proportional to the surface area available.Therefore,a large number of alveoli ensures efficient and rapid gas exchange,which is essential for meeting the metabolic demands of the body.

	Stomata of Monocots	Stomata of Dicots
$A$.	Bean-shaped	Dumbbell-shaped
$B$.	Dumbbell-shaped	Bean-shaped
$C$.	Bean-shaped	Bean-shaped
$D$.	Dumbbell-shaped	Dumbbell-shaped

Similar Questions

Why do human beings face difficulty breathing at high elevations?

Select the correct option for the shape of guard cells in stomata.
Stomata of Monocots Stomata of Dicots
$A$. Bean-shaped Dumbbell-shaped
$B$. Dumbbell-shaped Bean-shaped
$C$. Bean-shaped Bean-shaped
$D$. Dumbbell-shaped Dumbbell-shaped

Identify $X, Y, Z$ from the given figure representing the exchange of gases in the alveoli.

Which of the following statements is $NOT$ correct?

Which structure of the lungs is directly involved in $O_2 / CO_2$ exchange between air and blood capillary?

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