Photoperiodism Is the

question 131

Multiple Choice

Photoperiodism is the

• A) duration of flowering in a plant.
• B) amount of light needed by a plant to exhibit normal growth.
• C) biological response of a plant to a change in the length of daylight relative to darkness.
• D) light phase of photosynthesis during which photolysis of water occurs.
• E) time of the day when light shines.