The Cylinders in This Experiment Represent a 24-Hour Period

question 30

True/False

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.

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Definitions:

Polygraph

A machine, commonly used in attempts to detect lies, that measures several of the physiological responses accompanying emotion (such as perspiration and cardiovascular and breathing changes).

Lie Detection

The process of determining whether a person is not telling the truth, often through the analysis of physiological responses to questioning.

Right Frontal Lobe

A region of the brain involved in decision making, problem solving, and controlling behavior and emotions.

Negative Emotions

Feelings that are generally considered to be unpleasant or disadvantageous, such as sadness, anger, or fear.