Question :

How are water and minerals transported in plants?




Class 10



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Answer / Solution

Water along with dissolved minerals is absorbed by the roots from soil. This absorption through the root hair cells occurs through osmosis. However, it cannot be transported to all other plant cells only through diffusion or osmosis. The plants have developed a well-defined system of conducting tubes for such transports and this system is called the vascular system.

It consists of two tissues:

  • Xylem and
  • Phloem.

Xylem tissue are majorly responsible to transport water and minerals from roots to all other plant cells.

Answer / Solution

In plants, vascular tissue xylem is responsible for transporting water and minerals in plants. Our phloem (tissue) transports products of photosynthesis from the leaves, where they are synthesized to other parts of the plant. Xylem and phloem are together known as vascular bundles.

In plants, transpiration creates a suction pressure and water is forced into the xylem cells of the roots of the plants. This movement of water from the root xylem to all the plant parts. After that plants possess the two transport systems which process to move water, minerals and food through their roots, stems, and leaves.

These processes are regularly working by using  continuous tubes which are called xylem & phloem.

After that,  the xylem cells in plants transport water and minerals from the soil to the leaves. These cells of the leaves, roots and stem are interconnected through medium to reach all parts of the plants. Therefore, there is a continuouly water movement into the xylem to other parts of the plants. 

Transportation sequence takes place in the following process

  • Plants absorbed water through their roots continuously. This water is sent up through the stem to all parts of the plant, including the leaves.
  • It is to be noted that a small amount of water is retained in the plant or utilized in the process of photosynthesis. The rest of the water evaporates into the atmosphere in the form of water vapour through the Stomata. This process is called transpiration.
  • Transpiration creates a suction pressure which pulls up water from the xylem of the roots to the stem and then to the leaves.
  • As the xylem tissues are narrower in its diameter, in the form of capillary tubes (tracheids and fibres), force is greater here.
  • Thus, it can be said that xylem plays an important role in the transportation of water and minerals once they absorb these and transport them to different plant parts.

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