Can the stem of a plant be compared with a street with two ways traffic? Give reason.
Yes, the stem of a plant can be compared with a street with two ways traffic because the movement of substances occurs in different directions in plants. There is an upward movement (towards the leaves) and a downward movement (from the leaves) of substances in a plant. The two-way traffic in plants is as follows:
(i) Stem conducts water and minerals from the roots to the leaves and other parts of the plant in the upward direction.
(ii) Stem takes the food prepared by the leaves to other parts of the plant in the downward direction.