Question

Write a brief note on modification of leaves, stem and roots.

Answer 1

Hint: The part of a plant that consists of the green pigment called the chlorophyll is called the Leaves. The stem is the plant’s part which grows above the ground level. The root is the plant’s part that cultivates underground. They modify to help the development of the plant.

Complete answer:
> The leaves are responsible to carry out the procedure of photosynthesis but from time to time it gets modified to achieve various functions. Some of them are:
  - Tendrils- they exist in climbers and help the plant to climb as seen in the pea plant.
  - Leaf pitcher- present in nitrogen lack plant and helps to catch the insect fulfill nitrogen

> Stems provide sustenance to the plant but get altered to aid the plant in numerous functions. Some of them are:
  - Thorn- The axillary buds of some plants convert into thrones and help in reducing the process of transpiration.
  - Cladodes- The branches and stem in plants like Ruscus are modified to carry out the process of photosynthesis.

> Roots achieve the purpose of absorption and are modified to accomplish various jobs.
  - Storage as in vegetables like carrot and radish.
  - Support as in plants like sugarcane and Banyan.

Additional information:
Many of the plants normally ought to modify their parts to absorb the food from an alternative plant. The plants which are growing in the place where it is very marshy, ought to modify their roots. They extend their roots outside to support their respiration. Moreover, many of the plants undergo the process of photosynthesis with the help of the roots.

Note: The main reasons for a plant to modify its parts are:
- To store the food for a long period.
- To obtain external mechanical support.
- To possess vital properties and complete important functions.