Identify the odd one out among the following elements based on their mobility in plants.

Which mineral element is essential for the activity of enzymes involved in lipid and glucose metabolism?

Match Column-$I$ and Column-$II$.

Column-$I$	Column-$II$
$a$. To maintain the ribosome structure	$i$. Boron
$b$. The anion-cation balance in cells	$ii$. Magnesium
$c$. Carbohydrate translocation	$iii$. Chlorine
$d$. Constituent of vitamin biotin	$iv$. Potassium
	$v$. Sulphur

Match the essential elements in plants with their respective functions:

$(a)$ Iron	$(i)$ Photolysis of water
$(b)$ Zinc	$(ii)$ Pollen germination
$(c)$ Boron	$(iii)$ Required for chlorophyll biosynthesis
$(d)$ Manganese	$(iv)$ $IAA$ biosynthesis

Choose the correct option:
$(a)\quad(b)\quad(c)\quad(d)$

$Mg$ and $Fe$ are required by plants for the:

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: