Animal tissues are different from plant tissues. State the reasons.

$(a)$ Why are complex tissues called so?
$(b)$ Why is connective tissue called so?
$(c)$ What is the function of the tissue present in the lining of kidney tubules?

Name the element$(s)$ of xylem which
$(i)$ help in transport of water and minerals,
(ii) stores food,and
(iii) provides mechanical support.

Which of the following helps in the repair of tissue and fills up the space inside the organ?

Which structure protects the plant body against the invasion of parasites?

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.