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

1)

Induction deficiencies of iron, magnesium and calcium

2)

Appearance of brown spots surrounded by chlorotic veins

3)

Inhibition of  ions translocation in the shoot apex

4)

All of the above



Question ID - 100280 | SaraNextGen Top Answer

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

1)

Induction deficiencies of iron, magnesium and calcium

2)

Appearance of brown spots surrounded by chlorotic veins

3)

Inhibition of  ions translocation in the shoot apex

4)

All of the above

1 Answer
127 votes
Answer Key / Explanation : (4) -

The prominent symptoms of manganese toxicity is the appearance of brown spots surrounded by chlorotic veins.

It is important to know that manganese competes with iron and magnesium for its uptake by the plants and with magnesium for its binding with enzymes. Manganese also inhibits calcium translocation in shoot apex. Therefore, excess of manganese may induce deficiencies of iron, magnesium and calcium

127 votes


127