Which of the following micro-elements is absorbed by leaves?

$Ca^{+2}$ is an essential element in plants. Its major function is in

The chlorophyll molecule is not formed without which of the following elements?

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:

Which of the following statements is consistent with the role of magnesium $(Mg^{2+})$?

Match the following items in List-$I$ with List-$II$ and select the correct option:

List-$I$	List-$II$
$(1)$ For repair of worn-out cells	$(a)$ Phosphorus
$(2)$ In the structure of $ATP$	$(b)$ Magnesium
$(3)$ In the synthesis of $ATP$	$(c)$ Zinc
$(4)$ In the structure of myoglobin in muscles	$(d)$ Iron