External Factors Affecting Transpiration
Transpiration is influenced by various external factors, such as:
- Temperature: As water molecules evaporate from a plant’s surface more quickly in high temperatures, transpiration rates often increase. On the other hand, transpiration decreases in colder temperatures.
- Humidity: Transpiration is directly impacted by the amount of humidity in the atmosphere. Since the air around the plant is already saturated with moisture, high humidity limits further evaporation, which lowers the rate of transpiration. On the other hand, low humidity causes a steeper water potential gradient between the leaf and the atmosphere, which increases transpiration rates.
- Wind: By eliminating the layer of humid air that surrounds the leaf surface and allowing water vapor to more easily diffuse into the atmosphere, wind movement can accelerate transpiration rates.
- Light Intensity: During transpiration, light causes the stomata to open that facilitate gas exchange and the release of water vapor. Transpiration rates generally rise with increased light intensity.
- Soil Moisture: Transpiration rates are influenced by the amount of water present in the soil. Plants may close their stomata to conserve water when soil moisture levels are low, which lowers transpiration. On the other hand, high soil moisture content can raise transpiration rates.
Root Pressure in Plants
Root Pressure in plants is a significant natural process responsible for transferring essential nutrients from the soil to the plant stems. This happens with the help of pressure called hydrostatic pressure. This hydrostatic pressure originates in the roots and travels through the plant’s vascular tissue to the shoots.
The root pressure class 10 is an important topic in the biology syllabus. In this article, we will read more about root pressure theory including its type, factors responsible, and birch sugaring, etc.
Table of Content
- What is Root Pressure?
- Root Pressure in Plants
- How does Root Pressure Work?
- Factors Affecting Root Pressure
- Root Pressure and Transpiration Pull
- External Factors Affecting Transpiration