Question
Match List I with List II :List I (Growth Regulator) List II (Function/Effect) A. 2,4-D I. Brewing industry B. $GA_3$ II. Stimulation of stomatal closure C. Kinetin III. Herbicide D. ABA IV. Nutrient mobilisation
Choose the correct answer from the options given below :
This question was previously asked in
NEET UG Re-Exam 2026 Question Paper (21-Jun-2026)
The correct answer is
A-III, B-I, C-IV, D-II
This question requires matching plant growth regulators from List I with their respective functions or effects in List II.
Matching Plant Growth Regulators to Functions
Let's analyze each growth regulator:
- A. 2,4-D: This is a synthetic auxin commonly used as a selective herbicide.
- B. $GA_3$ (Gibberellic acid): Gibberellins promote seed germination and growth. They are utilized in the brewing industry to enhance malting (germination) of barley.
- C. Kinetin: Kinetin is a type of cytokinin, known for promoting cell division and delaying senescence. Cytokinins also play a role in nutrient mobilization towards stimulated areas, like developing fruits or leaves.
- D. ABA (Abscisic acid): Abscisic acid acts as a stress hormone, primarily involved in inhibiting growth and inducing dormancy. It is crucial for the stimulation of stomatal closure during water stress to prevent dehydration.
Summary of Matches
Based on the analysis, the correct matches are:
| List I Item | Growth Regulator | List II Match | Function/Effect |
|---|---|---|---|
| A | 2,4-D | III | Herbicide |
| B | $GA_3$ | I | Brewing industry |
| C | Kinetin | IV | Nutrient mobilisation |
| D | ABA | II | Stimulation of stomatal closure |
Therefore, the correct combination is A-III, B-I, C-IV, D-II.
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