Question

The symptoms of magnesium deficiency appear first in the mature leaves

• A. True
• B. False

Answer 1

The correct option is A True

• Magnesium is absorbed by plants in the form of divalent $M{g}^{2+}$.
• The first sign of magnesium deficiency is the chlorosis(yellowing of leaf tissue due to a lack of chlorophyll) of old leaves which progresses to the young leaves as the deficiency progresses because it forms the central atom of chlorophyll.
  
• Hence The symptoms of magnesium deficiency appear first in the mature leaves is a true statement.
• So, the correct answer is 'True'.