Overview
Guard cells play a crucial role in plant physiology by regulating the opening and closing of stomata, which are essential for gas exchange and water conservation. These specialized cells respond to environmental factors such as light, humidity, and carbon dioxide levels, ensuring that plants can eff...
Key Terms
Example: Stomata open during the day to take in CO2 for photosynthesis.
Example: Guard cells swell to open stomata when water is abundant.
Example: Photosynthesis occurs in the chloroplasts of plant cells.
Example: Transpiration helps cool the plant and maintain nutrient flow.
Example: Osmosis helps guard cells regulate their turgor pressure.
Example: High turgor pressure keeps guard cells firm and functional.
Related Topics
Photosynthesis
The process by which plants convert light into energy, closely linked to stomatal function.
intermediateTranspiration
The process of water movement through a plant and its evaporation from aerial parts.
intermediatePlant Physiology
The study of plant functions and processes, including growth and response to the environment.
advancedKey Concepts
StomataGas ExchangeWater RegulationPhotosynthesis