It is observed that deficiency of a particular element showed its symptoms initially in older leaves and then in younger leaves. Does it indicate that the element is actively mobilized or relatively immobile?

It is observed thatdeficiency of a particular element showed itssymptomsinitially in older leaves and then in younger leaves. Name two elemtns which are highly mobile and two which are relatively immobile.

It is observed that deficiency of a particular element showed its symptomsinitially in older leaves and then in younger leaves. How is the aspect of mobility of elements important to horticulture and agriculture?

Deficiency symptoms of an element tend to appear firstin youngleaves.It indicatesthat the element is relatively immobile. Which one of the following elemental deficiency would showsuch symptoms?

If a plant shows a symptom which could develop due to deficiency of more than one nutrient, how would you find out experimentally, the real deficient mineral element?