A) Nastic movement
B) Hyponasty movement
C) Epinastic movement
D) Autonomic movement of growth
Correct Answer: A
Solution :
Opening of flower buds into flower is a type of autonomic movement of growth, i.e., nastic movement. This movement occur due to difference in rate of growth on two opposite sides of a plant organ and is determined by the structure of responsive organ and not the direction of stimulus. Greater growth on one side cause the organ to bend towards the opposite side. When movement occur due to fastar growth of the upper surface of organ a compare to lower surface, it is termed as epinasty, i.e., opening of flower.
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