Question

explain respiration in plants

Answer 1

RESPIRATION IN PLANTS

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Plants need energy to grow and perform essential functions. They obtain this energy through the process of respiration.

Generally, plants do not have any special organ to perform this process. They exchange gases through stomata and large intercellular
spaces present throughout the plant body ensure that all cells are in contact with air.

Roots, stem and leaf of a plant are involved in this process. Process of respiration seems to be rapid in meristematic tissue, while slower in the mature regions.

Gaseous Exchange in Roots :

The exchange of gases in roots of a plant take place by the process of diffusion from the air present in between the soil particles. Oxygen diffuses into the root hair and passes into the root cells, from where the carbon dioxide moves out into the soil.

Gaseous Exchange in Stems :

In woody plants, gaseous exchange occurs through the small pores in the stems called
lenticels . On the other hand, in herbaceous plants, stomata on the stems aid in the respiratary process.

Gaseous Exchange in Leaves :

In leaves , respiration takes place by diffusion of oxygen through stomata into the cells of the leaf. Stomata are the aerating pores present on the epidermis of the leaf. Each stomata is bordered by a pair of kidney- shaped guard cells bearing chloroplasts in them. The direction of diffusion mainly depends upon the environmental conditions and the requirements of the plants.

During daytime, when photosynthesis occurs, the carbon dioxide is rapidly used up, while the oxygen release is the measure event.

On the other hand during night time, the elimination of carbon dioxide takes place.

I hope you understand my dear friend.

Answer 2

hey friend here is your answer

⊙RESPIRATION IN PLANTS

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⊙plants respiration is the opposite of photosynthesis which is a biological process performed by Green plants that creates oxygen and release it into the air. during respiration plants absorbs free molecules of oxygen and use them to create carbon dioxide,water and energy which helps the plant grow

⊙remember that respiration is not the same as breathing,so take care plants do not breathe. As we see from the word equations respiration and breathing are opposite process. Respiration use oxygen and produce carbon dioxide but photosynthesis uses oxygen and produce carbon dioxide.

⊙plants respire all the times because their cells need oxygen to alive. But plants can only photosynthesise when they are in light. Remember that respiration uses oxygen and produce carbon dioxide.

⊙To unlock the energy in the carbohydrates produced in photosynthesis green plants need to respire just as animals do. Respiration takes place in the plants cells using oxygen to produce energy and giving off and as carbon dioxide as a waste products.

⊙cellular respiration consist of three steps
1) Glycolysis

it occurs in cytoplasm of the cell. it is basically conversion of glucose molecules into pyruvate.
2)kreb cycle

it occurs in the inner membrane of the mitochondria when pyruvate is formed by Glycolysis is converted into carbon dioxide and water molecules.

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