Fill in the blanks :
(a) ......................... are the openings found on older stems.
(b) Glycolysis occurs in the ....................of the cells.
(c) .............................is a respiratory substance.
(d) Rate of ..........................is more than the rate of .....................in the daytime in the case of green plants.
(e) ................is a chemical which absorbs oxygen of the air.
(f) ...................... is used to create vacuum to show anaerobic respiration.
(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 ?