Question

If you sprinkle some command salt on grass growing on your lawn it is killed at the spot why?

Answer 1

if common salt is sprinkled on the grass, then it dies because adding salt results in loss of water from the grass cells due to exosmosis. as the concentration of salt is more outside the cells, the water leaves the cell to maintain equilibrium on both sides of the cell. this results in excessive loss of water from the cell resulting in cell death.

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Answer 2

Because a process named plasmolysis occur in the weed cells which causes the water to expell out... This leads to their death