Deficiency Symptoms and Correction · NCERT Biology

Manganese toxicity actually induces the deficiency of which elements by inhibiting their translocation to the shoot apex?

  1. Nitrogen and Phosphorus
  2. Calcium (Ca)
  3. Potassium and Sodium
  4. Molybdenum (Mo)
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Correct answer: Calcium (Ca)

Manganese competes with Iron and Magnesium for uptake and with Magnesium for enzyme binding. Crucially, it inhibits the translocation of Calcium to the shoot apex, leading to stunted apical growth.

Difficulty: Medium Question 8 of 19

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