Significance of Osmosis and Diffusion
· Diffusion and Osmosis play an important role in living world. Diffusion helps in exchange of gases between cells and their environment. Single celled organisms that live in freshwater habitats gain water by osmosis. The tendency of water to pass into aquatic organisms by osmosis has to be countered to expel the excess.
· Plants absorb water through their roots from the soil by osmosis. It is carried upwards by xylem tubes to leaves, flowers and other parts.
· The food synthesized in leaves is distributed to different parts through phloem tissues following the principle of osmosis.
· In plants, cell to cell diffusion of water is controlled by osmosis. Osmosis regulates the opening and closing of stomata in leaves. They are surrounded by guard cells.
Single celled organisms that live in freshwater habitats gain water by ______________________. | |||
Right Option : B | |||
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Which of the following are correct : (a) In a plant cell, osmosis regulates the opening and closing of stomata in leaves. (b) Diffusion helps in exchange of gases between cells and their environment. (c) Plants absorb water through their roots from the soil by osmosis. | |||
Right Option : D | |||
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In a plant cell, ____________________ regulates the opening and closing of stomata in leaves. | |||
Right Option : A | |||
View Explanation |
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