What would be expected to happen if:
(a) `GA_(3)` is applied to rice seedlings
(b) Dividing cells stop differentiating
(c) A rotten fruit gets mixed with unripe fruits
(d) You forget to add cytokinin to the culture medium.

Explanation

(a) Rice seedlings will elongate rapidly.
(b) If dividing cells stop differentiating then, it will lead to the formation of mass of cells and may form tumor, which may be a cause of concern.
(c) Due to ripening activity of rotten fruit, ethylene will be produced. As a result, unripe fruits will ripe quickly.
(d) In abscence of cytokinins, in culture medium, callus will not develop shoot buds. Due to loss of cytokinesis, even cell division will fail to occur and callus may not be formed efficiently.