In plants,which elements are most readily mobilized?

In calcium-deficient plants,meristematic regions of the stem and root tips are greatly affected,and chlorosis of the margins of young leaves takes place. These symptoms eventually lead to the death of leaf,stem,and root apices. These observations are related to the role of calcium in plant growth as it is:

Calcium deficiency results in the formation of an egg with

$P$: Phosphorus is essential for normal growth and reproduction in our body.
$Q$: Copper is important in the synthesis of chlorophyll in plants.

Which of the following mineral elements plays an important role in the synthesis of $ATP$ and carbohydrates?

In plants,excess of manganese may,in fact,induce deficiencies of ......... and .........