Write a brief note on respiration.
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Answers
✍️In most plants exchange of gases takes place through stomata .
✍️In most plants exchange of gases takes place through stomata .✍️There aur other areas on the plant body as well through which gaseous exchange takes place like surface of roots lenticels on stem .
✍️In most plants exchange of gases takes place through stomata .✍️There aur other areas on the plant body as well through which gaseous exchange takes place like surface of roots lenticels on stem .✍️Some plants have specialised structures like breathing roots of mangrove plants as well as the tissue in orchids.
✍️In most plants exchange of gases takes place through stomata .✍️There aur other areas on the plant body as well through which gaseous exchange takes place like surface of roots lenticels on stem .✍️Some plants have specialised structures like breathing roots of mangrove plants as well as the tissue in orchids.✍️ breathing roots and tissue in our kids help plants to take oxygen to produce energy and carbon dioxide is released .
✍️In most plants exchange of gases takes place through stomata .✍️There aur other areas on the plant body as well through which gaseous exchange takes place like surface of roots lenticels on stem .✍️Some plants have specialised structures like breathing roots of mangrove plants as well as the tissue in orchids.✍️ breathing roots and tissue in our kids help plants to take oxygen to produce energy and carbon dioxide is released .✍️ inside the plants opening leads to a series of space between the cells which forms a continuous network all over the plant .
✍️In most plants exchange of gases takes place through stomata .✍️There aur other areas on the plant body as well through which gaseous exchange takes place like surface of roots lenticels on stem .✍️Some plants have specialised structures like breathing roots of mangrove plants as well as the tissue in orchids.✍️ breathing roots and tissue in our kids help plants to take oxygen to produce energy and carbon dioxide is released .✍️ inside the plants opening leads to a series of space between the cells which forms a continuous network all over the plant .✍️As the oxygen is used by the cells a gradient develops between the surface and the air in the space and similarity between the air spaces and outside stomata lenticels so oxygen passing .
✍️In most plants exchange of gases takes place through stomata .✍️There aur other areas on the plant body as well through which gaseous exchange takes place like surface of roots lenticels on stem .✍️Some plants have specialised structures like breathing roots of mangrove plants as well as the tissue in orchids.✍️ breathing roots and tissue in our kids help plants to take oxygen to produce energy and carbon dioxide is released .✍️ inside the plants opening leads to a series of space between the cells which forms a continuous network all over the plant .✍️As the oxygen is used by the cells a gradient develops between the surface and the air in the space and similarity between the air spaces and outside stomata lenticels so oxygen passing .✍️In the same way as more carbon dioxide is given out by the cells a gradient occurs in the reverse direction and passes out .
Answer:
In order to carry on respiration, plant cells need oxygen and a means of disposing of carbon dioxide just as animal cells do. Unlike animals, plants have no specialized organs for gas exchange (with the few inevitable exceptions!). Each part of the plant such as leaves, stems and roots perform their own respiration. In plants respiration takes place at much slower rate as compared to animals. Also, there is very less transportation of respiratory gases from one part of the plant to another.
Respiration in leaves
Stomata In leaves the exchange of respiratory gases takes place through very small pores called stomata (singular stoma). The stomata are present in large number on the lower surface of leaves of plant. Each stoma has a pore at its centre which is surrounded and controlled by two kidney shaped cells called guard cells. When the stoma opens the exchange of gases takes place between the atmosphere and interior of the leaf by the process of diffusion.
Respiration in stems
Lenticels In the plans having hard and woody stems and mature roots the exchange of gases takes place through lenticels. Lenticels are actually loosely packed dead cells which are present as small pores on the bark of woody plants or old roots. These enable oxygen to reach the intercellular spaces of the interior tissues and carbon dioxide to be released to the atmosphere by the process of diffusion.
Respiration in roots
Plant Root Hair In plants respiration also takes place through roots. In soil oxygenated air is present in air spaces between soil particles. This oxygen is absorbed into the roots by root hair present on the roots. In fact, a root hair is a lateral tubular outgrowth of the outer epidermal cells of a root. The oxygen present in between the soil particles diffuse into the root hairs. From root hairs, oxygen is supplied to all the parts of roots for respiration. During respiration, oxygen is converted into carbon dioxide gas which is diffused out of the roots by the same root hair.