Which of the following is a micronutrient?

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:
$(a)\quad(b)\quad(c)\quad(d)$

Which element is essential for the growth of the root tip?

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 element is essential for root hair growth?

Identify the function associated with Zinc $(Zn^{2+})$ in plants.