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How are water and minerals transported i...

How are water and minerals transported in plants?

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Whater and minerals are transpoted through xylem cells from soil to the leves. The xylem cells of roots stem and leaves are interconnected to from a conducting channel that reaches all parts of the plant. The root cells take ions form the soil. This creates a differrnce between the concentration of ions of roots and soil. Therefore there is a steady movement of water into xylem. An osmotic pressur is formed and water and minerals and transported from one cell to the other cell due to osmosis. The continuous loss of water takes place due to transpiration. Brcause of transpiration, a suction pressure is created as a result of which water is forced into the xylem cells of roots. The effect of root pressure from transportation in plants in more important n night while during day time transpiration pull becomes the major driving force.
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(a) Why is transport of materials necessary in an organism (plant or animals) ? (b) What is the need of special tissues or organs for transport of substances in plants and animals ? (c) How are water and minerals transported in plants ? (d) How is food transported in plants ?

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NCERT-LIFE PROCESSES-Exercise
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  2. What are the components of the transport system in highly organised pl...

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  3. How are water and minerals transported in plants?

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  4. How is food transported in plants?

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  5. Describe the structure and functioning of nephrons.

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  6. What are the methods used by plants to get rid of excretory products

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  7. How is the amount of urine produced regulated?

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  8. The kidneys in human beings are a part of the system for

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  9. The xylem in plants are responsible for

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  10. The autotrophic mode of nutrition requires :

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  12. How are fats digested in our bodies? Where does this process take plac...

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  13. What is the role of saliva in the digestion of food?

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  14. What are the necessary conditions for autotrophic nutrition and what a...

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  15. What are the differences between aerobic and anaerobic respiration? Na...

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  16. How are the alveoli designed to maximise the exchange of gases?

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  17. What would be the consequences of a deficiency of haemoglobin in our b...

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  18. Describe double circulation of blood in human beings. Why is it necess...

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  19. What are the differences between the transport of materials in xylem a...

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