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प्रश्न
Explain why the grass in your lawn becomes greener if you add a little fertilizer to it, but it dies if you add a lot of it.
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उत्तर
If a little fertilizer is added, it provides minerals and other nutrients so the leaves synthesize more chlorophyll and appear greener. If a lot of fertilizer is added, it forms a hypertonic solution resulting in plasmolysis and consequently wilting of parts of the plant. Ultimately the plant dies.
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संबंधित प्रश्न
Name the following:
The uptake of mineral ions against concentration gradient.
The diagram given below represents an experimental set – up to demonstrate a certain process. Study the same and answer the questions that follow:
what would you observe in the experimental set-up after an hour or so?
The diagram given below represents an experimental set – up to demonstrate a certain process. Study the same and answer the questions that follow:
what control experiment can be set up for comparison?
The diagram given below represents an experimental set-up to demonstrate a certain process. Study the same and answer the questions that follow:
Mention two advantages of the process to the plants.
Name the following:
The membrane which allows water molecules to pass through, but not sugar molecules.
Fill in the Blank
Water and mineral salts absorbed by root is known as ______.
Distinguish between Diffusion and Osmosis.
Cell wall is _______.
Aquaporins (water channels) are involved in ______ type of transport.
Which of the following means of transport need expenditure of ATP?
