Which mineral is essential for the strength of teeth and bones?

Read the functions given below and identify the concerned nutrient.
$I.$ Activator of catalase
$II.$ Important constituent of cytochrome
$III.$ Important constituent of proteins involved in $ETS$
$IV.$ Essential for chlorophyll synthesis

Which of the following elements are required for chlorophyll synthesis?

Select the correct match.

Iron is present in which of the following?

Which mineral element is associated with the translocation of sugars in plants?