Which of the following are plant growth promoters?

You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?

Describe the following plant growth regulators:
$(1)$ Gibberellins
$(2)$ Cytokinins

The process of soaking rice in water to induce germination is known as $..........$.

Fill in the blanks with appropriate word/words.
$(a)$ $A$ phase of growth which is maximum and fastest is $.......$ .
$(b)$ Apical dominance as expressed in dicotyledonous plants is due to the presence of more $.......$ in the apical bud than in the lateral ones.
$(c)$ In addition to auxin,a $.........$ must be supplied to culture medium to obtain a good callus in plant tissue culture.
$(d)$ $.........$ of a vegetative plants are the sites of photoperiodic perception.

$I.$ The increased growth per unit time is termed as $A$.
$II.$ Abscisic acid $B$ the stomata.
Choose the correct option and fill in the blanks.