NEET Biology question

Not in NEET syllabus

Which of the following is true regarding manganese toxicity in plants?

(A)Induces deficiencies of iron, magnesium and calcium
(B)Appearance of brown spots surrounded by chlorotic veins
(C)Inhibition of Ca2+ ion translocation in the shoot apex
(D)All of the aboveCorrect

Answer: (D)

Solution

Excess manganese competes with iron and magnesium for uptake, and with magnesium for binding to enzymes, thereby inducing their deficiency; it also inhibits translocation of Ca2+ to the shoot apex;

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Question ID VK-112874