Class Notes NCERT Solutions for CBSE Students
Question: Explain how the transportation of food, water and minerals happens in plants.
Answer: Plants also need to transport water, minerals, salt and nutrients to all their parts. Once the water and minerals are absorbed from the soil by the roots, they move up the stem and leaves through tube-like tissues called the xylem.
Absorption and transportation of water is a continuous process which occurs with the help of transpiration. Transpiration is the process which plants lose water through the stomata. This result in water loss in the cells of the leaves and creates a pressure. The pressure helps to pull the water from the roots through the xylem of the stem to reach all the way to the leaves.
The food manufactured in the leaves during photosynthesis reaches all parts of the plant through a process called translocation. This occurs through another set of tube – like tissues called the phloem. Xylem and phloem are called conducting tissues or vascular bundles.
