Which function is mostly performed in the fleshy tissue parts of a plant, rather than in the tissues that make up the upper layer of leaves?
a. growth
b. protection
c. storage
d. support

The answer is storage

The correct answer is C. Storage.

Explanation

Plants are autotrophic organisms, that is, they make their food. In the case of plants, its main source of food is the sunlight that it acquires through its leaves, and the water and nutrients it acquires through its roots. On the other hand, the plants have fleshy tissue that functions as storage for substances that are useful for their growth and life, to avoid their involvement in unfavorable periods in which there is not so much sunlight or the soil does not provide the necessary nutrients. So, the correct answer is C. Storage.