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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Similar questions

Q. 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.

Q. The toxicity symptoms of Mn are actually combined deficiency symptoms of

Match the following deficiency symptoms with relevant essential elements:

$\begin{matrix} Column - I & Column - II A . Chlorosis & 1. N, S, Mo B . Necrosis & 2. N, K, S, Mo C . Inhibition of cell division & 3. Ca, Mg, Cu D . Delay of flowering & 4. N, K, Mg, S, Fe, Mn, Zn, Mo \end{matrix}$

Q. Which of the following are common symptoms developed due to deficiency of Ca, Mg, K and Mo?

Q. Assertion (A): The deficiency symptoms of N, P and Mg are visible first in senescent leaves.
Reason (R): Elements like N, P and Mg are mobile.

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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 AManganese 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.