Question

sometimes higher plants and animals to perform anaerobic respiration

Answer 1

When the plants or animals don't get sufficient amount of oxygen, anaerobic respiration takes place. In plants some organic acids and alcohol formation takes place.
In animals mostly lactic acid forms in the muscles cell and animals get pain in their muscles.

Answer 2

Answer:

. Respiration is an energy yielding process and takes place by the oxidation of foodstuffs.(ii) Higher plants and animals require oxygen in order to respire aerobically.(iii) However, in conditions where oxygen is depleted, these organisms perform anaerobic respiration to obtain energy.