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Questions and Answers
What effect do auxins have on the stems of plants?
Auxins produced at the tips of stems tend to accumulate on the side of the stem that is in the shade, stimulating growth on the shaded side of the plant and causing the stem to bend and appear to be growing towards the light.
Describe how auxins affect the development of horizontal roots.
Auxins in the tips of roots tend to limit growth. If a root is horizontal in the soil, the auxins will accumulate on the lower side and interfere with its development, causing the lower side of the root to grow slower than the upper side, which will in turn cause the root to bend downwards, with the tip of the root growing in that direction.
What hormones control plant growth?
Plant growth is controlled by a group of hormones called auxins found at the tips of stems and roots of plants.
