SSC CHSL 2025 PYQ — Question 99

SSC CHSL - 22 Nov 2025 - Shift 3 • General Awareness • Q99

How does auxin affect the growth of the plant in response to light?

Show answer & explanation

Correct answer: D

Explanation

  • Auxin is an important growth hormone found in plants.
  • This hormone regulates the growth of plants in the direction of light.
  • When light falls on a plant from one direction, auxin accumulates in greater quantities in the shaded region.
  • As a result, the cells in the shaded region elongate more.
  • Due to this unequal elongation of cells, the plant bends towards the light.
  • This process is known as phototropism.
  • Therefore, auxin stimulates the cells in the shaded region to elongate.