Deficiency symptoms of an element tend to appear first in young leaves.It indicates that the element is relatively immobile. Which one of the following elemental deficiency would show such symptoms?

Deficiency symptoms of an element tend to appear first in young leaves

1.	Deficiency symptoms of an element tend to appear first in young leaves.It indicates that the element is relatively immobile. Which one of the following elemental deficiency would show such symptoms?
Answer» Deficiency symptoms of an element tend to appear first in young leaves.It indicates that the element is relatively immobile. Which one of the following elemental deficiency would show such symptoms?