The Question is from neet-botany plant-growth-and-development , and it was created by the author Mr. NARESH KUMAR K

Question

Identify to which plant hormone, the given function belongs I. Initiates flowering in pineapples II. Induces flowering in mango III. Root growth and root hair promotion I II III

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B. Ethylene, Ethephon, Auxin
## CONCEPT FRAMEWORK
	**Primary Concept**: Plant hormones and their functions
	**Related Topics**: Plant physiology, Growth and development, Hormonal regulation
	**Prerequisites**: Basic understanding of plant hormones and their roles.
## SOLUTION PATHWAY
**Given Information**:
	I. Initiates flowering in pineapples
	II. Induces flowering in mango
	III. Root growth and root hair promotion
**Method & Steps**:
	1. **Identify the hormone responsible for flowering in pineapples:**
		Reasoning: Ethylene is known to induce flowering in pineapples.
	2. **Identify the hormone responsible for inducing flowering in mango:**
		Working: Ethephon, a plant growth regulator, releases ethylene when applied to plants. It is used to induce flowering in mangoes.
		Key Point: Ethephon itself is not a hormone, but it acts by releasing ethylene.
	3. **Identify the hormone responsible for root growth and root hair promotion:**
		Result: Auxin promotes root growth and root hair development.
		Verification: Auxins are well-established as key regulators of root development.
## OPTION ANALYSIS
[A] :x: Auxin does promote root growth, but gibberellins and cytokinins are not primarily associated with flowering in pineapples or mangoes.
[B] ✓: Ethylene induces flowering in pineapples, Ethephon (which releases ethylene) induces flowering in mangoes, and Auxin promotes root growth and root hair formation.
[C] :x: Gibberellins can induce flowering in some plants, but not specifically pineapples or mangoes. Cytokinins are primarily involved in cell division and shoot growth, and abscisic acid is a growth inhibitor.
[D] :x: Cytokinin is not typically associated with flowering in these fruits, abscisic acid inhibits growth, and while ethylene is involved in some aspects of root development, auxin is the primary hormone for root growth and root hair promotion.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing the roles of different plant hormones: Create a table summarizing the functions of each hormone.
		2. Not recognizing Ethephon's role: Remember that Ethephon is a source of ethylene.
	**Quick Tips**:
		1. Focus on the specific examples given (pineapple and mango flowering) to narrow down the options.
		2. Associate auxin with roots and ethylene with fruit ripening and flowering in certain plants.

Mr. NARESH KUMAR K · Answer

Auxin, Gibberellin, Cytokinin

Mr. NARESH KUMAR K · Answer

The correct Option is "Ethylene, Ethephon, Auxin"

Mr. NARESH KUMAR K · Answer

Gibberellin, Cytokinin, Abscisic acid

Mr. NARESH KUMAR K · Answer

Cytokinin, Abscisic acid, Ethylene

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