Acid rain:(a) Causes necrosis(b) Converts chl | vedclass

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(A) Acid rain is primarily composed of sulfuric acid and nitric acid. It causes necrosis (death of plant tissues) by damaging the leaf surface and dis

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Only $(a)$ and $(b)$ are correct

Vedclass · Answer

(A) Acid rain is primarily composed of sulfuric acid and nitric acid. It causes necrosis (death of plant tissues) by damaging the leaf surface and disrupting metabolic processes. It also causes the acidification of the leaf environment,which leads to the replacement of the central magnesium ion in chlorophyll-$a$ with hydrogen ions,converting it into phaeophytin,thereby reducing photosynthetic efficiency. $PAN$ (Peroxyacetyl nitrate) is a secondary pollutant formed by the photochemical reaction of nitrogen oxides and hydrocarbons in the presence of sunlight,not by acid rain. Therefore,statements $(a)$ and $(b)$ are correct.

Acid rain:
$(a)$ Causes necrosis
$(b)$ Converts chlorophyll-$a$ into phaeophytin
$(c)$ Responsible for formation of $PAN$

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Acid rain:$(a)$ Causes necrosis$(b)$ Converts chlorophyll-$a$ into phaeophytin$(c)$ Responsible for formation of $PAN$