Question:
Choose the correct statements of the following:
A) Long day plant will not flower if the daylength is above the critical photoperiod.
B) Biennials are monocarpic plants that normally flower and die in second season.
C) Practice of layering the seeds during winter in layer of moist sand and peat is called prechilling.
D) ABA plays an important role as antagonist to GAs.
Choose the correct statements of the following:
A) Long day plant will not flower if the daylength is above the critical photoperiod.
B) Biennials are monocarpic plants that normally flower and die in second season.
C) Practice of layering the seeds during winter in layer of moist sand and peat is called prechilling.
D) ABA plays an important role as antagonist to GAs.
Show Hint
ABA = "Stop/Dormancy"; GAs = "Go/Growth"; they work against each other.
Updated On: Oct 7, 2026
- A, B, C
- B, C, D
- A, C, D
- A, B, D
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Concept
Plant growth and development, including photoperiodism and hormones.
Step 2: Analysis
A: Incorrect. Long-day plants flower when day length is *above* the critical limit. B: Correct. Biennials complete their life cycle in two seasons and are monocarpic. C: Correct. Prechilling (stratification) involves cold/moist storage to break dormancy. D: Correct. Abscisic acid (ABA) is a well-known antagonist to Gibberellins (GAs).
Step 3: Conclusion
Statements B, C, and D are correct.
Final Answer: (B)
Plant growth and development, including photoperiodism and hormones.
Step 2: Analysis
A: Incorrect. Long-day plants flower when day length is *above* the critical limit. B: Correct. Biennials complete their life cycle in two seasons and are monocarpic. C: Correct. Prechilling (stratification) involves cold/moist storage to break dormancy. D: Correct. Abscisic acid (ABA) is a well-known antagonist to Gibberellins (GAs).
Step 3: Conclusion
Statements B, C, and D are correct.
Final Answer: (B)
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