Final answer:
The statement that evapotranspiration does not include water lost from leaf surfaces is false. Evapotranspiration includes both evaporation from soil and transpiration from plant surfaces, including leaves. Factors such as sunlight, temperature, and humidity affect the rate of transpiration.
Step-by-step explanation:
The statement "Evapotranspiration does not include water lost from leaf surfaces" is false. Evapotranspiration is the process by which water is transferred from the land to the atmosphere by evaporation from the soil and other surfaces and by transpiration from plants. Transpiration specifically refers to the water lost through the leaf surfaces, especially through openings called stomata. Different factors influence the rate of transpiration:
- b. The abaxial or bottom surface receives less sunlight and water evaporates slower by transpiration.
- d. The adaxial or upper surface receives more sunlight and water evaporates faster by transpiration.
- C. Stomata close to conserve water, slowing down transpiration.
- d. The amount of water in the leaves decreases at high temperature and less is available for evaporation.
- c. Increasing humidity leads to reduced evaporation rates due to decreased difference in water vapor pressure between leaf and atmosphere.
In the context of transpiration and the movement of water in plants:
- a. Water vapor is lost to the external environment, increasing the rate of transpiration.
- The statement "Increasing humidity leads to increased evaporation rates due to decreased difference in water vapor pressure between leaf and atmosphere" is false.
- The statement "Negative water potential draws water into the root hairs. Cohesion and adhesion draw water up the xylem. Transpiration draws water from the leaf" is true, describing the movement of water in plants.