The calyptrogen of the root apex forms

What is the outermost structure of a root?

What is the specialized tissue with spiral thickenings in the cell wall,capable of absorbing water from the air,called?

Root cap is a specialized protective structure found on the tips of the terrestrial vascular plants. The cells of this root cap are:

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 cellulose.
Choose the correct answer from the options given below with reference to the structure of root hair.

Haustoria or sucking roots occur in