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  9. Q250

RRB Group D (Level-1 posts) 2022 · Question 250 of 598

Guard cells are involved in the process of:

  1. ATransport of food
  2. BTropic movements
  3. CTranspirationCorrect
  4. DCirculation

Answer: C. Transpiration

Explanation

Guard cells regulate the opening and closing of stomata, playing a crucial role in transpiration and gas exchange in plants.

Source: RRB Group D 2022 Prev. Yr. Paper (17 Aug 2022) (Shift 3) - Prepp · reliable-secondary

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