[Campbell Biology P.896] Which of the following statements about plant hormones, as describe... | Practice Question

Which of the following statements about plant hormones, as described in the text, is correct?

  • A: Plant hormones are primarily active at high concentrations to elicit significant effects.
  • B: The terms "plant hormone" and "plant growth regulator" are always used interchangeably without any distinction.
  • C: A single plant hormone typically influences only one specific physiological process.
  • D: Plant hormone responses often depend on interactions between different hormones rather than isolated actions.

Explanation

Option D is directly supported by the text, which emphasizes the interactive nature of hormone control. Option A is incorrect because hormones are active at very low concentrations. Option B is incorrect as the text clarifies its specific use of 'plant hormone' despite broader interchangeability. Option C is incorrect because hormones are described as having multiple effects.