A: Manganese toxicity causes brown spots,chlo | vedclass

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(A) Manganese toxicity symptoms include the appearance of brown spots surrounded by chlorotic veins. It also inhibits the translocation of calcium to

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

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(A) Manganese toxicity symptoms include the appearance of brown spots surrounded by chlorotic veins. It also inhibits the translocation of calcium to the shoot apex. This occurs because manganese competes with iron and magnesium for uptake and with calcium for translocation. Therefore,manganese toxicity induces the deficiency of $Fe$,$Mg$,and $Ca$. Both the Assertion and the Reason are correct,and the Reason provides the correct explanation for the symptoms described in the Assertion.

Column $I$ (Disorder)	Column $II$ (Description)
$i$. Chlorosis	$a$. Localised death of tissues in leaves
$ii$. Necrosis	$b$. Premature fall of flowers,fruits and leaves
$iii$. Mottling	$c$. Yellowing of leaves due to absence of chlorophyll
$iv$. Abscission	$d$. Appearance of green and non-green patches on leaves

$A$: Manganese toxicity causes brown spots,chlorotic veins,and inhibition of calcium translocation to the shoot apex.
$R$: Toxic effects may be due to direct excess of micronutrients or their interference in the absorption and functioning of other nutrients.

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$A$: Manganese toxicity causes brown spots,chlorotic veins,and inhibition of calcium translocation to the shoot apex.$R$: Toxic effects may be due to direct excess of micronutrients or their interference in the absorption and functioning of other nutrients.