Which of the following movements is not related to auxin level?
Correct answer: C. Nyctinastic leaf movements
- A. Bending of shoot towards light
- B. Movement of root towards soil
- C. Nyctinastic leaf movements
- D. Movement of sunflower head tracking the sun
Explanation
Nyctinasty is turgor-based, circadian-regulated, not auxin controlled.
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About Forms and Functions of Plants
Plant nutrition and transport cover mineral uptake, photosynthesis, xylem movement of water and minerals, and phloem translocation of sugars. Plant growth regulators include auxins, gibberellins, cytokinins, abscisic acid and ethene, whose effects on cell division, elongation, dormancy, fruit ripening and tropic responses should not be confused with mineral nutrition.
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