What is the main function of $WBC$?

Which is not a function of epidermis?

State whether the following statement is true or false:
The cells of collenchyma are living,elongated,and irregularly thickened at the corners.

$A$ neuron consists of

Explain the significance of the following:
$(a)$ Hair-like structures on epidermal cells
$(b)$ Epidermis has a thick waxy coating of cutin in desert plants
$(c)$ Small pores in the epidermis of a leaf
$(d)$ Numerous layers of epidermis in cactus
$(e)$ Presence of a chemical suberin in cork cells.

Choose the wrong statement.