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Explain Transportation in plants breafly only about xylem and phloem. Plzzz??????????????? |
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Answer» Don\'t you have book Xylem and Phloem tissues are present throughout the plant. They begin at the root and then move up to the stem, branches, and leaves.The xylem tissue transports water and minerals from the roots to the leaves whereas the phloem tissue transports food from the leaves to the other parts of the plant. Xylem tissue has tracheids and vessel elements. Phloem tissue has companion cells and sieve tubes.The phloem, on the other hand, is responsible for the translocation of the nutrients like carbohydrates and amino acids from the leaves to other areas of the plants. Here, the flow is bidirectional. It moves up and down the stem. Phloem occupies the edge of the vascular bundle, as seen in the following figure. Food movement in the phloem occurs due to the pressure flow mechanism. The differences in the osmotic pressure help in the movement of food from the area of high concentration to areas of low concentration. Xylem transports water and solutes from the roots to the leaves.Transpiration is the process by which water evaporates from the leaves, which results in more water being drawn up from the roots.....................? |
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