Question

Gibberellins promote flowering in ___________.

• A. Dahlia
• B. Aster
• C. Radish
• D. Tobacco

Hint:

Gibberellins make long-day rosette plants bolt and flower; radish is one of them.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
Gibberellins can replace the long-day requirement of many rosette plants.
They cause bolting (rapid internode elongation) followed by flowering.

Step 2: Apply to the options
Radish is a long-day rosette plant, like cabbage and beet, so gibberellins promote its flowering.
Dahlia, aster and tobacco are short-day plants, which do not respond to gibberellins in this way.

Step 3: Conclusion
The plant is radish.

Final Answer:
Gibberellins promote flowering in radish, option (C). \[ \boxed{\text{(C) }\text{Radish}} \]