Question:
A hormone that initiates flowering and synchronising fruit set in pineapples is ________.
A hormone that initiates flowering and synchronising fruit set in pineapples is ________.
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Although Auxin is also used for pineapple flowering, the specific keyword "synchronising fruit set" points strictly to Ethylene in standard biology texts.
Updated On: Apr 28, 2026
- Ethylene
- Abscissic Acid
- Auxins
- Gibberellins
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept: Plant Growth Regulators (PGRs) have distinct physiological effects and commercial agricultural applications.
Step 2: Key Formula or Approach: Match the specific agricultural function ("synchronising fruit set in pineapples") to the correct plant hormone.
Step 3: Detailed Explanation: While auxins are known to promote flowering in pineapples, ethylene is distinctly and specifically known for both initiating flowering and synchronizing fruit set.
Ethylene application ensures that the entire crop flowers and fruits at the same time, which is highly beneficial for the mass harvesting of pineapples.
This dual function of initiating and synchronizing fruit-set in pineapples is a textbook application of the gaseous hormone ethylene (often applied as Ethephon).
Step 4: Final Answer: The correct option is (1).
Step 2: Key Formula or Approach: Match the specific agricultural function ("synchronising fruit set in pineapples") to the correct plant hormone.
Step 3: Detailed Explanation: While auxins are known to promote flowering in pineapples, ethylene is distinctly and specifically known for both initiating flowering and synchronizing fruit set.
Ethylene application ensures that the entire crop flowers and fruits at the same time, which is highly beneficial for the mass harvesting of pineapples.
This dual function of initiating and synchronizing fruit-set in pineapples is a textbook application of the gaseous hormone ethylene (often applied as Ethephon).
Step 4: Final Answer: The correct option is (1).
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