Multiple choice

Opening of a flower and dropping of a bud are examples of

  1. movement of curvature

  2. epinastic movement

  3. hyponastic movement

  4. spontaneous movement
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 This option is correct because epinasty means downward, differential growth of the upper or adaxial part of a plant organ. Auxin and ethylene are involved in this response.

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