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Where does gaseous exchange in human take place?
Gaseous exchange takes place in numerous alveoli located in the lungs.
How does gaseous exchange take place in Amoeba?
This happens by Diffusion
Gases are exchanged in the?
Gaseous exchange takes place in the alveoli in the lungs, Oxygen is inhaled while Carbon dioxide is exhaled.
What is the process of gas exchange in plants?
The process of gas exchange in plants is known as photosynthesis. Animals let out carbon dioxide that the plants convert to oxygen.Gaseous Exchange in PlantsIn the plants the gaseous exchange occurs through surface of leaves. Special apparatus called as stomata are present on the surface on the leaves and green stem, through which plants exchange gases like carbon dioxide and oxygen. Stomatal opening is affected by various environmental factors like temperature, humidity, wind speed etc and thus affecting the gaseous exchange. In the roots of the plants the gaseous exchange occurs through pores called lenticles. The process of gaseous exchange occurs by the process of diffusion in these cases.Mechanism of gaseous exchange in plantsPlants require less energy per unit mass than animals as they possess lower metabolic rates. They do not therefore need to maintain the high rates of gaseous exchange of the more complex animals, and rely on diffusion through spaces between the cells (intracellular air spaces). No special ventilation mechanisms exist. Flowering plants exchange gases by diffusion through pores called stomata in their leaves and on their green stems, or if the stems are woody, through cracks in the bark or slits called lenticels.Gas exchange in leavesLeaves are thin and have a large surface area, and so they are the main sites of gaseous exchange. Inside the leaf of dicotyledons, there is a spongy mesophyll with large air spaces which allow efficient diffusion. There are also especially large spaces around the stomata. Since the system relies on diffusion, water can diffuse out of the plant just as easily. It is obvious that even a small amount of water stress may reduce plant growth (and therefore yield if it is a crop plant). Plants have protective mechanisms whereby they can close their stomata if water is in short supply. This depends on the action of plant hormones, particularly abscisic acid.The oxygen movements inside the plant are determined by the diffusion gradients that exist in the intercellular air spaces. In this way oxygen travels towards the cells and dissolves in the surface moisture of their walls. From here it passes by diffusion into the cells themselves. Carbondioxide leaves the plants by the same pathway but in the reverse direction. (Fig 1)The entire process would have become more complex in the photosynthesizing plants. Here the oxygen is produced by the chloroplasts as a waste product of photosynthesis. The oxygen may be used up immediately in respiration by mitochondria contained in the same cell, and waste carbondioxide from respiration may be used by the chloroplasts for photosynthesis.
What happens in the alveoli-?
Gaseous exchange takes place in the alveoli where carbon dioxide from the bloodstream diffuses into the air.
What exchange takes place in the lungs?
gaseous exchange - in the alveolis
What happens in gaseous exchange?
The diffusion of gases takes place from their higher concentration to lower concentration. Exchange of oxygen by carbondioxide is the usual feature of breathing by lungs.
Where does gaseous exchange in human take place?
Gaseous exchange takes place in numerous alveoli located in the lungs.
Where does gaseous exchange take place in a leaf'?
stomata
Where in the lungs does gaseous exchange take place?
alveoli is the site for gaseous exchange. They are the air filled sacs where carbon dioxide and oxygen is exchanged
What is the part of the lungs where gaseous exchange takes place?
In the alveoli
How does gaseous exchange take place in Amoeba?
This happens by Diffusion
What is 'gaseous exchange'?
Gaseous exchange is the movement of oxygen in the body, it takes place in the lungs through diffusion by the alveolar surface. There are millions of alveloi in the lungs, which gives it around 70m2 of exchange surface.
What is the Process of respiration in earthworms?
In earthworms the gaseous exchange takes place from their skin
How do green plants transpire?
Transpiration in green plants takes place through the stomata and cuticle. The stomata perform the function of gaseous exchange and during this process water vapours also get transferred due to difusion.
How does gas exchange occur?
Gaseous exchange takes place when the volume of the chest cavity is increased or decreased.
Where do the gaseous exchange take place?
Respirtary system, lungs, also known as thoratic region
