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    Exam 31: Plant Responses to Internal and External Signals
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    Which of the Following Chemicals Functions as a Photoreceptor in Plants
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Which of the Following Chemicals Functions as a Photoreceptor in Plants

Question 55

Question 55

Multiple Choice

Which of the following chemicals functions as a photoreceptor in plants and regulates photoperiodism and responses to seasons?


A) phytochromes
B) auxins
C) gibberellins
D) cytokinins

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