Question

What would be expected to happen if (a) $G{A}_3$ 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.

Answer 1

(a) If GA3 is applied to rice seedlings: The rice seedlings will show extra elongation and increase in height. They may also remain sterile.

(b) If Dividing cells stop differentiating: The plant organs like leaves, flower, etc. will not be formed and callus or tumor of undifferentiated cells will be produced.

(c) If a rotten fruit gets mixed with unripe fruits: The unripe fruits will ripe quickly as the rotten fruit emits ethylene.

(d) If you forget to add cytokinin to the culture medium: There growth will be slower as cytokinin is essential for cell division, differentiation and growth