Q
When water enters the guard cells, the guard cells and stomata
RRB NTPC (Graduate Level) Stage-II; RRB Technicians Grade-III
13/10/2025 (Shift-I); 26/12/2024 (Shift-II)
2025; 2024
✓ Answer:
C
Swell; opens
Water entering guard cells increases their turgor pressure, causing them to swell and the stomatal pore to open.