Which of the following chemicals are released as volatile elements directly from plants to atmosphere?

Nitrogen and phosporous

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Mercury and selenium

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Carbon and boron

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Oxygen and sulphur

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Solution

The correct option is B Mercury and selenium
Plant volatiles are the metabolites that plants used to release directly to the air. Almost one-fifth of the atmospheric carbondioxide fixed by land plants is released back into the air each day as volatiles. So as the mercury and selenium are volatile elements, they get easily evaporated at normal temperature.

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