Discussion
Consider the following main functions of plants :
A. To produce and store food
B. To give strength and support to the plant
C. To transport water and minerals from roots to other parts of plant
The main function(s) of the stem is/are :
Answer: A
The main functions of the stem are only B and C.
The stem holds the plant upright and supports its branches, leaves, flowers and fruits (B), and it carries water and minerals from the roots to the other parts of the plant and the food made in the leaves to the rest of the plant (C).
Producing food is the main function of the leaves, which carry out photosynthesis. Some stems store food, such as the potato or sugarcane, but that is a special modification, not a main function of the stem, so options with A are wrong.
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