A: Lichens do not grow in polluted areas havi | vedclass

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Question

(B) Assertion $(A)$ is correct because lichens are highly sensitive to sulfur dioxide $(SO_2)$ pollution and act as pollution indicators; they do not

Vedclass · Accepted Answer

Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.

Vedclass · Answer

(B) Assertion $(A)$ is correct because lichens are highly sensitive to sulfur dioxide $(SO_2)$ pollution and act as pollution indicators; they do not grow in areas with high $SO_2$ levels.Reason $(R)$ is also correct because lichens are pioneer species that colonize barren rocks. They secrete organic acids like carbonic acid and oxalic acid,which help in the weathering of rocks and soil formation.However,the Reason does not explain why lichens do not grow in polluted areas. Therefore,both are correct,but the Reason is not the correct explanation of the Assertion.

$A$: Lichens do not grow in polluted areas having $SO_2$.
$R$: Lichens secrete carbonic acid and oxalic acid on barren rocks.

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$A$: Lichens do not grow in polluted areas having $SO_2$.$R$: Lichens secrete carbonic acid and oxalic acid on barren rocks.