The cylinders in this experiment represent a 24-hour period. The light area represents light periods during a 24-hr. period and the dark area represents dark periods during a 24-hr. period. The critical length of dark vs. light periods for flowering is depicted by the dotted line. Note that some plants are flowering and some are not flowering. Study the results of this experiment on photoperiodism and flowering to determine whether the following statements are true or false.The conclusion drawn from these results is that the length of the dark period, not the light period, controls flowering.
Answer the following statement true (T) or false (F)
True
The correctly drawn conclusion from these results is that the length of the dark period, not the light period, controls flowering.
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What concerns do you think people might have about this procedure?
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Fill in the blank(s) with the appropriate word(s).