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

It is observed that deficiency of a particular element showed its symptoms initially in older leaves and then in younger leaves.


(a) Does it indicate that the element is actively mobilized or relatively immobile?
(b) Name two elements which are highly mobile and two which are relatively immobile.
(c) How is the aspect of mobility of elements important to horticulture and agriculture?

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Ans.

(a) It indicates that elements are actively mobilized as elements that are actively mobile show deficiency in older leaves before moving to younger leaves.

(b) Nitrogen, potassium, and magnesium are highly mobile elements, while calcium and sulfur are relatively immobile elements.

(c) The aspect of the mobility of elements plays a very important role in horticulture and agriculture because with the prevalence of mobility and immobility of elements in older or younger parts of a plant, agriculturalists or horticulturalists can make out deficiencies of elements, and they will be in a better position to provide the required amount of elements as a corrective measure.

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