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Salt is applied to tennis lawns to kill ...

Salt is applied to tennis lawns to kill weeds. How does salting tennis lawns help in killing of weeds without affecting the grass ?

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Salt solution being hypertonic, causes exo=osmosis in plants. 1 cup salt in 2 cup of water, fairly well dissolved when sprayed on weed plants, start killing them. This salt concentration is then increased in subsequent sprays, if the weeds are still thriving in the field.
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NCERT EXEMPLAR-TRANSPORT IN PLANTS-Short Answer Type Questions
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  2. Cut pieces of beetroot do not leave the colour in cold water but do so...

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  5. How can plants be grown limited water supply without compromising on m...

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  6. Will the ascent of sap be possible without the cohesion and adhesion o...

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  7. Keep some freshly cut flowers in a solution of food colour. Wait for s...

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  8. When a freshly collected Spirogyra filament is kept in a 10 % potassiu...

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  9. Sugar crystals do not dissolve easily in ice cold water. Explain.

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  10. Salt is applied to tennis lawns to kill weeds. How does salting tennis...

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  11. What is the chemical composition of of xylem and phloem sap ?

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  12. If you are provided with two tubes (A and B), where one is narrow and ...

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  13. What are 'aquaporins' ? How does presence of aquaporins affect osmosis...

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  14. ABA (Abscisic Acid) is called a stress hormone. A. How this hormone ...

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  15. We know that plants are harmed by excess water. But plants survive und...

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  16. Differentiate between diffusion and translocation in plants.

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  17. How is fcilitated diffusion different from diffusion ?

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  18. Explain the mass flow hypothesis of transport in phloem.

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  19. Observe the diagram and answer the following. (a) Are these types...

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  20. Define uniport, symport and antiport. Do they require energy ?

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