_______ and _________helps in exchange of gases in plants.
A minute pore which helps in exchange of gases is:
(a) Give the main points of difference between respiration in plants and respiration in animals. (b) Describe the exchange of gases which takes place in the leaves of a plant (a) during daytime, and (b) at night. (c) Which contains more carbon dixoide : exhaled air or inhaled air ? Why ?