Value based questions.
Symptoms of deficiency of certain nutrients appear in the old leaves first.

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Solution

Those nutrients (e.g., nitrogen, phosphorus, magnesium) whose soluble forms are mobile and thus transported from the old leaves to the young leaves show symptoms of deficiency (of these nutrients) appear in old leaves first.

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Value based questions.Symptoms of deficiency of certain nutrients appear in the old leaves first.

Those nutrients (e.g., nitrogen, phosphorus, magnesium) whose soluble forms are mobile and thus transported from the old leaves to the young leaves show symptoms of deficiency (of these nutrients) appear in old leaves first.

Value based questions.
Symptoms of deficiency of certain nutrients appear in the old leaves first.