The Houseplants in a Windowless Room with Only Fluorescent Lights

question 107

Multiple Choice

The houseplants in a windowless room with only fluorescent lights begin to grow tall and leggy. Which of the following treatments would promote more normal growth?

• A) Leave the lights on at night as well as during the day.
• B) Add additional fluorescent tubes to increase the light output.
• C) Add some incandescent bulbs to increase the amount of red light.
• D) Set a timer to turn on the lights for 5 minutes during the night.
• E) Turn off the lights for 5 minutes during the day.

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