Question:
Which of the following physiological effects is caused in plants by gibberellic acid?
Which of the following physiological effects is caused in plants by gibberellic acid?
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Gibberellins are “growth-promoting hormones” responsible for stem elongation and breaking dormancy.
Updated On: Sep 19, 2025
- Shortening of genetically tall plants
- Elongation of genetically dwarf plants
- Rooting in stem cuttings
- Yellowing of young leaves
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The Correct Option is B
Solution and Explanation
Step 1: Role of gibberellic acid.
Gibberellins are plant hormones that promote stem elongation, seed germination, and flowering.
Step 2: Identifying the physiological effect.
In genetically dwarf plants, gibberellic acid stimulates internode elongation, leading to normal height growth.
Final Answer: \[ \boxed{\text{Elongation of genetically dwarf plants}} \]
Gibberellins are plant hormones that promote stem elongation, seed germination, and flowering.
Step 2: Identifying the physiological effect.
In genetically dwarf plants, gibberellic acid stimulates internode elongation, leading to normal height growth.
Final Answer: \[ \boxed{\text{Elongation of genetically dwarf plants}} \]
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