Question

Guard cells are involved in the process of ________

• A. transport of food
• B. tropic movements
• C. transpiration
• D. Circulation

Answer 1

Answer:

C. transpiration

Guard cells regulate the opening and closing of stomata, playing a crucial role in transpiration and gas exchange in plants. Stomata are pores formed by pairs of specialized epidermal cells, the guard cells, which are found in the surface of aerial parts of most land plants. The stomatal pore called ostiole can open and close through dynamic changes in turgor of the guard cells to control gas exchange between the plant and its environment.