Many Plants Flower in Response to Day-Length Cues

question 45

Multiple Choice

Many plants flower in response to day-length cues. Which of the following statements best summarises this phenomenon?

• A) As a rule, short-day plants flower in the summer.
• B) As a rule, long-day plants flower in the spring or autumn.
• C) Long-day plants flower in response to long days, not short nights.
• D) Flowering in short-day and long-day plants is controlled by phytochrome.

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Definitions:

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