Which of the following is not a major function of the roots?
a. photosynthesis
b. providing a membrane in which osmosis moves water across
c. uptake of nutrients
d. development of root pressure that drives movement

The correct answer is A. Photosynthesis. To conduct photosynthesis, you need chloroplasts and these are found in the leaves which is why the leaves are green. Roots don't have them and they aren't exposed to the sun and don't create energy using photosynthesis. They do however absorb nutrients from the soil.