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    Biology
  3. Study Set
    Animal Behavior
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    Exam 5: The Physiological and Endocrine Basis of Behavior
  5. Question
    What Is a Photoperiod
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What Is a Photoperiod

Question 3

Question 3

Multiple Choice

What is a photoperiod?


A) The duration of light in 24 hours
B) The period of light in 12-hour intervals
C) The increase in light over a series of 24-hour periods
D) The variation in light that occurs during daytime

Correct Answer:

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