alleryThe delay of ageing in plants caused by the application of cytokinin is given which specific name?
ABolting growth effect
BRichmond Lang effect
CBakanae disease effect
DAvena curvature effect
Answer & Solution
Correct answer: B. Richmond Lang effect
1. Cytokinin can delay the process of ageing (senescence) in plants.
2. This delaying of ageing by cytokinin is called the Richmond Lang effect.
3. Bolting is a gibberellin effect and Bakanae is a disease linked to gibberellins, so they are wrong.
4. Hence the Richmond Lang effect is correct.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 16 Plant and Animal Hormones "Physiological effects of cytokinins", p.238_
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