NEETBotanyPlant - Growth and Development
Match List-I with List-II regarding plant growth regulators and their agricultural applications. List-I List-II (A) Gibberellins (I) Initiating rooting in stem cuttings (B) Auxins (II) Delaying leaf senescence (C) Ethylene (III) Increasing sugarcane yield (D) Cytokinins (IV) Synchronising fruit-set in pineapples Choose the correct answer from the options given below:
Options
- A(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
- B(A)-(I), (B)-(III), (C)-(IV), (D)-(II)
- C(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
- D(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Correct answer
D. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Step-by-step solution
Gibberellins increase the length of the stem, thus increasing the yield of sugarcane (A matches III). Auxins are widely used in plant propagation to initiate rooting in stem cuttings (B matches I). Ethylene is highly effective in fruit ripening and is used to synchronise fruit-set in pineapples (C matches IV). Cytokinins help in delaying leaf senescence by promoting nutrient mobilisation (D matches II). Therefore, the correct matching is (A)-(III), (B)-(I), (C)-(IV), (D)-(II). Answer: (A)-(III), (B)-(I), (C)-(IV),