Q11Written answer
What would be expected to happen if:
(a) GA3 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.
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Worked solution
- The rice seedlings will show internode-elongation, and hence, an increase in height will be observed if GA3 is applied to rice seedlings.
- If the dividing cells stop differentiating, the different plant parts, such as the stem and leaves, will not form.
- If a rotten fruit gets mixed with unripe fruits, then the plant growth regulator – ethylene that is synthesised from the rotten fruits will speed up the process of ripening the unripe fruits.
- If you forget to add cytokinin to the culture medium, then the process of cell division, differentiation and growth will be dampened and get slower.