Question

4. How does respiration take place in leaves of plants?
Explain.

Answer 1

Explanation:

Respiration is the process of releasing energy from food. Like human beings and other animals, plants also need oxygen from the environment and release carbon dioxide. This shows that even plants undergo the process of respiration. So, Oxygen and carbon dioxide are also called respiratory gases.

The respiration is plants differ from human beings and other animals in the following aspects:

Respiration takes place individually in all parts of the plants like stem, roots, leaves etc. In human beings and animals respiration takes place through one part only.

In plants, respiratory gases are hardly transported from part to another part. On the other hand, in animals and human beings respiratory gases are transported to all parts of the body.

The rate of respiration is slow in plants whereas it is faster in humans and animals.

Plants get oxygen by diffusion

Note -

Diffusion is the only process through which much needed oxygen is supplied to all the cells of the plants. Diffusion occurs in roots, stems and leaves.

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Answer 2

Answer:

Respiration In Leaves The leaves of plants have tiny pores on their surface which are called stomata. The exchange of gases in the leaves during respiration takes place through stomata. This happens as follows: Oxygen from the air enters into a leaf through stomata and reaches all the cells by the process of diffusion.