Q. How is the food transported in plants?
The prepared food is transported in the plants through phloem to the storage organs of roots, fruits, seeds and growing parts. This process is called translocation. This function is done by sieve tubes and companion cells. The movement of food particles takes place upward and downward.
Mechanism of translocation is an active process that utilizes energy. Materials are transferred from leaf cells or from the site of storage into phloem tissue. For this energy is required which is provided by the ATP molecules. This energy increases the osmotic pressure, as a result, water from outside moves into the phloem. This pressure maintains the movement of food through all the parts of plants.