9
Question
Tip of twiner is sensitive and coils around support itself. This coiling is called as
Tip of twiner is sensitive and coils around support itself. This coiling is called as
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Solution
The correct option is C Nutation
Nutation is the bending movements of plant organs such as stems, leaves, roots, etc. It depends on internal stimuli. The side on which growth is most rapid pushes the apex over towards the side on which growth is less rapid. When the region of more rapid growth changes, the upward growth of the tip takes a spiral path. Twining plants can also move by external stimuli also.Thus, the correct answer is option A.
Nutation is the bending movements of plant organs such as stems, leaves, roots, etc. It depends on internal stimuli. The side on which growth is most rapid pushes the apex over towards the side on which growth is less rapid. When the region of more rapid growth changes, the upward growth of the tip takes a spiral path. Twining plants can also move by external stimuli also.
Thus, the correct answer is option A.
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