A plant scientist was hired by a greenhouse operator to devise a way to force iris plants to bloom in the short days of winter. Iris normally blooms as a long-day (short-night) plant. Which of the following has the best chance of creating iris blooms in winter?
(a) Interrupt the long winter nights with a brief period of light.(b) Increase the temperature to more closely follow summer temperatures.(c) Artificially increase the period of darkness in the greenhouse.(d) Grow the plant in 24 hours of light each day.
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A plant scientist was hired by a greenhouse operator to devise a way to force iris plants to bloom i...
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