A: High concentration of atmospheric SO_2 red | vedclass

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(A) High concentration of atmospheric $SO_2$ acts as a pollutant that causes damage to plant tissues.$SO_2$ reacts with chlorophyll $a$ and replaces t

Vedclass · Accepted Answer

Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) High concentration of atmospheric $SO_2$ acts as a pollutant that causes damage to plant tissues.$SO_2$ reacts with chlorophyll $a$ and replaces the central magnesium $(Mg)$ ion,converting it into phaeophytin.This process,known as pheophytinization,leads to the degradation of chlorophyll,thereby reducing the photosynthetic efficiency and primary productivity of the plant.Therefore,both the Assertion and the Reason are correct,and the Reason is the correct explanation of the Assertion.

$A$: High concentration of atmospheric $SO_2$ reduces primary productivity.
$R$: $SO_2$ converts the chlorophyll $a$ into phaeophytin.

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$A$: High concentration of atmospheric $SO_2$ reduces primary productivity.$R$: $SO_2$ converts the chlorophyll $a$ into phaeophytin.