Plant Growth and DevelopmentHard
Question
In short-day plants, flowering is induced by
Options
A.photoperiod less than 12 hr
B.photoperiod below a critical and uninterrupted long night
C.long night
D.short photoperiod and interrupted long night
Solution
In short-day plants, flowering is induced when the day length do exceed a certain critical value, the day length required is less than a certain critial length. Short -day plants may be more correctly called long night plants as a certain minimum of uninterrupted dark period in 24 hr is necessary for their flowering Short-day plants will not flower if the dark period is less than a critical length.
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