Question

Richmond - Lang effect is related with ...............

• A. promoting cell division
• B. apical dominance
• C. prevention of abscission layer formation
• D. delaying senescence

Hint:

The Richmond-Lang effect is related to delaying plant senescence, which can be achieved by manipulating hormonal levels.

Answer 1

The Correct Option is D

Step 1: Understanding Richmond-Lang effect.
The Richmond-Lang effect refers to the delay of senescence (aging) in plants when they are exposed to certain hormones, such as cytokinins. This effect prevents the aging process, allowing for prolonged growth and productivity.
Step 2: Analyzing the options.
(A) promoting cell division: While cytokinins promote cell division, they are not directly related to the Richmond-Lang effect.
(B) apical dominance: Apical dominance refers to the growth inhibition of lateral buds, which is not the focus of the Richmond-Lang effect.
(C) prevention of abscission layer formation: Abscission refers to the process of leaf drop, which is not the focus of this effect.
(D) delaying senescence: Correct — The Richmond-Lang effect is specifically related to the delay of senescence in plants.
Step 3: Conclusion.
The correct answer is (D) delaying senescence, as the Richmond-Lang effect delays the aging process in plants.