When the external temperature is higher than our body temperature, we regulate it by $........$, and when it is lower than our body temperature, we regulate it by $........$.

Which of the following steps is $NOT$ involved in the process of respiration?

Given below are two statements.
Statement $I$: Guard cells of stomata are kidney shaped in dicotyledons and dumbbell shaped in monocotyledons.
Statement $II$: In $Cyperus$,both kidney and dumbbell shaped guard cells are present.
In the light of above statements,choose the most appropriate answer from the options given below:

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.

Select the correct match.

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