The phytohormones controlling the plant movements are?
Correct answer: E. All of the above
- A. Auxins
- B. Gibberellins
- C. Abscisic acid
- D. Cytokinins
- E. All of the above
Explanation
Phytohormones are critical for plant growth, development, and responses to stimuli. Auxins are directly involved in tropisms, which are movements towards or away from stimuli. Gibberellins, while primarily growth hormones, also influence tropic movements by modulating growth patterns. Abscisic acid is more related to stress responses but contributes to movement by regulating stomatal closure. Cytokinins affect growth and cell division, indirectly influencing movement. Thus, all these hormones together play a role in plant movements and responses.
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Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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