The Question is from neet-botany , and it was created by the author B VENKAT

Question

Which plant growth regulator is responsible for triple response?

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: A
## CONCEPT FRAMEWORK
	**Primary Concept**: Plant Growth Regulators
	**Related Topics**: Plant Hormones, Ethylene, Auxin, Abscisic Acid
	**Prerequisites**: Basic knowledge of plant hormones and their functions.
## SOLUTION PATHWAY
**Given Information**:
	The question asks for the plant growth regulator responsible for the triple response.
**Method & Steps**:
	1. Recall the function of each plant growth regulator.
	2. Identify the regulator known to cause the triple response.
	Reasoning: The triple response is a characteristic response of plants to ethylene.
**Final Step**:
	Result: Ethylene (${{m{C}}_2}{{m{H}}_4}$) is responsible for the triple response.
## OPTION ANALYSIS
[A] ✓: Ethylene is the plant hormone responsible for the triple response which includes inhibition of stem elongation, lateral stem swelling, and horizontal growth.
[B] :x: IAA (Indole-3-acetic acid) is an auxin primarily involved in cell elongation, apical dominance, and root development.
[C] :x: IBA (Indole-3-butyric acid) is another auxin, often used for root initiation in cuttings.
[D] :x: ABA (Abscisic acid) is involved in stress responses, seed dormancy, and stomatal closure.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing different plant hormones and their functions. Review the specific roles of each hormone.
	**Quick Tips**:
		1. Memorize the key functions of common plant hormones such as auxins, gibberellins, cytokinins, ethylene, and abscisic acid.

B VENKAT · Answer

The correct Option is "${{\rm{C}}_2}{{\rm{H}}_4}$"

B VENKAT · Answer

IAA

B VENKAT · Answer

IBA

B VENKAT · Answer

ABA

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