Describe the process of respiration in the following parts of a plant
(a) Root
(b) Stem
(c) Leaves
Answers
Answer:
a) Respiration in roots: The roots of a plant take the oxygen required for respiration from the air present in-between the soil particles by the process of diffusion. The roots have extensions of epidermal cells of a root called root hair which are in contact with the air in the soil. Oxygen diffuses from root hairs and reaches all the other cells of the root for respiration. Carbon dioxide gas produced in the cells of the root during respiration moves out through the root hairs by the process of diffusion. Thus, the respiration in roots occurs by diffusion of respiratory gases through the root hairs.
(b) Respiration in stems: The stems of herbaceous plants takes place through stomata. The oxygen from the air diffuses into the stem of a herbaceous plant through stomata and reaches all the cells for respiration. The carbon dioxide produced diffuses out through stomata. In woody stems, the bark has lenticels for the exchange of gases.
(c) Respiration in leaves: The leaves of a plant has tiny pores called stomata through which the exchange of respiratory gases takes place by diffusion. Oxygen from air diffuses into a leaf through stomata and reaches all the cells, where it is used for respiration and the carbon dioxide produced diffuses out from the leaf into the air through stomata.
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Explanation:
Respiration in the root :
the roots of a plant take the required for respiration form the air present in between the soil particles by the process of diffusion the roots of extension of epidermal cell of a root root hair which are in contact with the air in the soil oxygen diffuses from root hair and reaches also the other cells of the route for respiration carbon dioxide produced in the sale of the route during exhalation move out through the root hair by the process of decision that does that respiration in root occur by diffusion of gas through root hair .
Respiration in stem :
the stem of herbacous a plant take place through stomata the oxygen from the a diffuse into the stem of herbacous plant through stomata and reaches a all the cells of for respiration the carbon dioxide produced diffuse out of stomata in in wood stems the back has lenticles for exchange of gases.
Respiration in leaves :
the leaves of a plant has a tiny pores called stomata through with the exchange of respiratory gases take place by diffusion of oxygen from air diffuse into a leaf through stomata and reaches cell the cell where it is used for respiration and carbon dioxide produced diffuse out from the leaf into the air through stomata.