01 DEFINITION Pathway of water movements in roots There are two pathways of water passage from root hairs to xylem inside the root, apoplast and symplast. Apoplast pathway: In this pathway the movement of water occurs exclusively through cell wall without the involvement of any membranes. Majority of the amount of water goes through the apoplast pathway. The cortex of the root does not oppose such movement of the water. Symplast pathway : Here, the movement of water molecules is from cell to cell through the plasmodesmata. The plasmodesmata forms a network of cytoplasm of all cells. 02 DEFINITION Transportation of food and other substances Excess of food is taken into the storage organs like roots, fruits and seeds. This process is known as translocation and it takes place through phloem in upward as well as downward direction. In flowering season, sugar stored in the roots or stem is translocated to the buds for growing them int...
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