Question

Growth retardant-type anti-transpirants, such as Cycocel (CC

  • C , work through a mechanism quite different from purely reflective or film-forming anti-transpirants. Besides reducing overall shoot growth, what additional physiological action do this growth retardants specifically induce to help conserve plant water?
A Forming a thin protective film over leaves
B Reflecting solar radiation away from leaves
C Increasing the overall transpiration rate
D Inducing closure of stomata
E Enhancing chlorophyll synthesis
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