Based on its role in plant signaling, which substance is best described as a hormone?

Name: Based on its role in plant signaling, which substance is best described as a hormone?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Auxin is a hormone that plays a key role in plant growth and development, including controlling tropism responses and the differentiation of vascular tissue. Zeaxanthin, phototropin, phytochrome, and cryptochrome are all involved in plant signaling, but are not hormones.

Based on Its Role in Plant Signaling, Which Substance Is