Question

All living cells require energy for various activities. This (4)

energy is available by the breakdown of simple carbohydrates either using oxygen or without using oxygen.

(1) Energy in the case of higher plants and animals is obtained

by

a) Breathing

b) Cellular respiration

c) Organ respiration

d) Digestion of food​

Answer 1

Explanation:

answer d) digestion of food

Answer 2

Answer:

Cellular respiration

(digestion of food is a close answer but energy isn't obtained by it instead it is connected with conversation of complex molecules to simple molecules not by breakdown of glucose)