A) paratonic movement
B) automonic movement
C) nastic movement
D) none of the above.
Correct Answer: A
Solution :
: Induced or paratonic movements are due to external factors such as light (phototactic movements), temperature (thermotactic movements) or chemicals (chemotactic movements). Autonomous or spontaneous movements are due to internal stimuli, e.g., protoplasmic flow in a cell, ciliary movements, amoeboid movements, cyclosis etc. Nastic movement is a response to a stimulus, independent of its direction, e.g., opening of buds under different light intensities.
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