2. That this food supply must be oxidized before energy is released.

3. That in cases where the food is not stored at the point where it is to

be oxidized the food must be digested so that it may be transported from

one part to another in the same plant.

The life processes of plants and animals, so far, may be considered as

alike; they both feed, breathe (oxidize their food), do work, and grow.

A Civic Biology, Presented in Problems · 第 55 / 178 题