Assertion (A): The symptoms of manganese toxicity are actually the deficiency symptoms of Fe, Mg and Ca.
Reason (R): Mn competes with Fe and Mg for uptake and also inhibits Ca translocation in the shoot apex.

Both A & R are true and R explains A

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Both A & R are true and R does not explain A

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A is true and R is true

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Both A & R are false

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Solution

The correct option is A
Both A & R are true and R explains A

Manganese competes with iron and magnesium for uptake and with magnesium for binding with enzymes. Manganese also inhibits calcium translocation in the shoot apex. Excess Mn induces deficiency of Fe, Mg and Ca.

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Assertion (A): The symptoms of manganese toxicity are actually the deficiency symptoms of Fe, Mg and Ca. Reason (R): Mn competes with Fe and Mg for uptake and also inhibits Ca translocation in the shoot apex.

The correct option is A Both A & R are true and R explains A Manganese competes with iron and magnesium for uptake and with magnesium for binding with enzymes. Manganese also inhibits calcium translocation in the shoot apex. Excess Mn induces deficiency of Fe, Mg and Ca.

Assertion (A): The symptoms of manganese toxicity are actually the deficiency symptoms of Fe, Mg and Ca.
Reason (R): Mn competes with Fe and Mg for uptake and also inhibits Ca translocation in the shoot apex.

The correct option is A
Both A & R are true and R explains A

Manganese competes with iron and magnesium for uptake and with magnesium for binding with enzymes. Manganese also inhibits calcium translocation in the shoot apex. Excess Mn induces deficiency of Fe, Mg and Ca.