opening and closing of stomatal pore depends on
What is the Opening and Closing of Stomatal Pore?
Opening and closing of the stomatal pore is a physiological response that occurs in plants. These pores are present in the leaves, stems, and other plant organs, and they regulate the entry and exit of gases and water vapor.
Answer:
LectureNotes said that the opening and closing of stomatal pores depends on various environmental factors. The process of opening and closing these pores is essential for the regulation of gas exchange in plants. Here are some of the factors that affect the opening and closing of stomatal pores:
1. Light: The presence of light triggers the opening of stomata, allowing for the exchange of gases and water vapor. When light levels are low, the stomata close to conserve water.
2. Humidity: When the air is dry, plants lose water through the stomata. To conserve water, the stomata will close. Conversely, when the air is humid, the stomata open to release excess water vapor.
3. Temperature: When temperatures are high, the stomata close to conserve water. When temperatures are low, the stomata may remain open for a longer period of time to allow for gas exchange.
4. Carbon Dioxide (CO2): High levels of CO2 in the atmosphere can cause the stomata to close, reducing gas exchange.
5. Water Availability: When water is scarce, the stomata close to conserve water. When water is abundant, the stomata open to allow for gas exchange and to facilitate photosynthesis.
Overall, the opening and closing of stomatal pores is a critical process in plants that allows for the regulation of gas exchange and water balance.