CBSE 11th Standard Biology Subject Breathing and Exchange of Gases HOT Questions 3 Marks Questions 2021
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CBSE 11th Standard Biology Subject Breathing and Exchange of Gases HOT Questions 3 Marks Questions 2021
11th Standard CBSE
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Reg.No. :
Biology
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A person dies in an accident in which his chest cavity was punctured, but no lung damage was there. Point out the cause of death.
(a) -
Diffusion of gases occurs in the alveolar region only and not in the other parts of respiratory system. Why?
(a) -
Why is breathing of women regarded as thoracic, while that of male as abdominal? Also state who among the two has higher vital capacity.
(a) -
State the route of foul air from the lungs to outside. Also state whether TV increases or decreases during excitement and activity.
(a) -
Why is it not advisable to sleep in closed rooms warmed with burning of coals continuously?
(a)
3 Marks