NTA Abhyas NEET2020BotanyPlant - Growth and DevelopmentPractice
Select the incorrect statement about photoperiodism.
Options
- AThe site of perception of light/dark duration are the leaves.
- BFlowering in certain plants depends not only on a combination of light and dark exposures but also their relat
- CThe hypothesised hormonal substance migrates from shoot apices to leaves for inducing flowering.
- DShoot apices modify themselves into flowering apices prior to flowering.
Correct answer
C. The hypothesised hormonal substance migrates from shoot apices to leaves for inducing flowering.
Step-by-step solution
The response of plants to periods of day/night is termed photoperiodism. It has been hypothesised that there is a hormonal substance(s) that is responsible for flowering. This hormonal substance migrates from leaves to shoot apices for inducing flowering only when the plants are exposed to the necessary inductive photoperiod.