explain the uptake of nitrate ions into the root hair cell
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Two cross roads each of width 10m cut at right angles through the centre of a
rectangular park of the length 700 m and the breadth 300 m parallel to its sides.
Find the area of the roads. Also find the area of the park.
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Nitrogen gas in the air is very un-reactive and cannot be fixed in the plant. But the soil contains nitrate ions and plants can absorb these by active transport in their root hair cells. Nitrate ions are transported up the plant in the xylem and can be used to make amino acids etc. in the leaf cells.
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