Answer: The mobile elements are the elerments move form one place to other place, where the particular element is deficient. The deficiency of mobile elements first appear in older leave whereas the deficency of the immobile elements first appear in the younger leaves The immobile elements are iron, calcium, manganese, zinc, copper and boron Solution Answer: The mobile elements are the elerments move form one place to other place, where the particular element is deficient. The deficiency of mobile elements first appear in older leave whereas the deficency of the immobile elements first appear in the younger leaves The immobile elements are iron, calcium, manganese, zinc, copper and boron.