In wheat plant . . . . . . root system is present.

In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order:

The tap roots of . . . . . . get modified to store food.

Given below are two statements.
$Statement-I$: In root hair, the outer layer of the cell wall is composed of pectin.
$Statement-II$: In root hair, the inner layer of the cell wall is composed of chitin.
Choose the correct answer from the options given below with reference to the structure of root hair.

Which of the following pairs are correctly matched?
$(1)$ Assimilatory roots — Photosynthesis
$(2)$ Fasciculated roots — Food storage
$(3)$ Stilt root — Mechanical support
$(4)$ Sucking root — Absorption of moisture from the air
Select the correct answer:

........ roots are associated with nitrogen-fixing bacteria.