Which one of the following statements is incorrect?

  • A
    The principle of countercurrent flow facilitates efficient respiration in gills of fishes.
  • B
    The residual air in lungs slightly decreases the efficiency of respiration in mammals.
  • C
    The presence of non-respiratory air sacs increases the efficiency of respiration in birds.
  • D
    In insects,circulating body fluids serve to distribute oxygen to tissues.

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Similar Questions

For completion of the respiration process,write the given steps in sequential manner.
$(a)$ Diffusion of gases ($O_2$ and $CO_2$) across alveolar membrane.
$(b)$ Transport of gases by blood.
$(c)$ Utilisation of $O_2$ by the cells for catabolic reactions and resultant release of $CO_2$.
$(d)$ Pulmonary ventilation by which atmospheric air is drawn in and $CO_2$ rich alveolar air is released out.
$(e)$ Diffusion of $O_2$ and $CO_2$ between blood and tissues.

Which of the following is a plant showing scotoactive opening of stomata?

Statement-$I$: The anatomical setup of the lungs in the thorax is such that any change in the volume of the thoracic cavity will be reflected in the lung cavity.
Statement-$II$: The volume of air remaining in the lungs even after a forcible expiration is called residual volume.

Rate of breathing in a newborn is about . . . . . . times per minute.

Which of the following are the correct statements regarding respiration in humans?

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