The locomotary movement of free swimming organisms or their organs in response to one sided illumination:
Correct answer: A. Chlamydemonas
- A. Chlamydemonas
- B. Mimesa pudica
- C. Oxalis
- D. Crocus
Explanation
The locomotary movement of free swimming organisms or their organs in response to one-sided illumination is called phototaxis. Organisms like Chlamydomonas can exhibit positive or negative phototaxis, moving towards or away from the light source.
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About Plant Growth Regulators
Plant growth regulators are chemical messengers that control growth, development and responses to the environment. The topic covers auxins, gibberellins, cytokinins, abscisic acid and ethylene, including cell elongation, apical dominance, tropisms, seed germination, dormancy, fruit ripening and leaf fall, with growth promoters distinguished from inhibitors.
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