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The chemical that promotes phototropism is _____.

-auxin
-gibberellin
-cytokinin
-abscisic acid (ABA)

User Kliketa
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2 Answers

5 votes
I belive that it is auxin
User NarasimhaTejaJ
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I believe the correct answer from the choices listed above is the first option. The chemical that promotes phototropism is auxin. Phototropism is the growth of an organism which responds to a light stimulus. Auxins are plant hormones that are used in growing.
User Branden Huggins
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