Multiple choice

Suraj observed that the petals of moonflower close during the day when there is bright sunlight, but open up at night when it is dark. This movement is an example of

  1. thigmonasty

  2. geotropism

  3. hydrotropism

  4. photonasty

  5. chemotropism

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Photonasty is response to light.