Plant Hormones Can Have Different Effects at Different Concentrations

question 25

Multiple Choice

Plant hormones can have different effects at different concentrations. This explains how

• A) some plants are long-day plants and others are short-day plants.
• B) signal transduction pathways in plants are different from those in animals.
• C) plant genes recognize pathogen genes.
• D) auxin can stimulate cell elongation in apical meristems, yet will inhibit the growth of axillary buds.

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