Relative humidity (the amount of water vapor in the air) is also an important consideration in evapotranspiration rates because as the air becomes more and more saturated, less water is able to evaporate into that air. Therefore, as the relative humidity increases transpiration decreases.
The movement of wind and air across an area is the third factor affecting evapotranspiration rates. As the movement of air increases, evaporation and transpiration does as well because moving air is less saturated than stagnant air. This is because of the movement of air itself. Once saturated air moves, it is replaced by drier, less saturated air which can then absorb water vapor.
The moisture available in a plant's soil is the fourth factor affecting evapotranspiration because when soil is lacking moisture, plants begin to transpire less water in an effort to survive. This in turn decreases evapotranspiration.
The final factor affecting evapotranspiration is the type of plant involved in the transpiration process. Different plants transpire water at different rates. For example, a cactus is designed to conserve water. As such, it does not transpire as much as a pine tree would because the pine does not need to conserve water. Their needles also allow water droplets to gather on them which is later lost to evaporation in addition to the normal transpiration.
Geographic Patterns of EvapotranspirationIn addition to the five factors mentioned above, evapotranspiration rates are also dependent upon geography, namely, an area's latitude and climate. Regions on the globe with the most solar radiation experience more evapotranspiration because there is more solar energy available to evaporate the water. These are generally the equatorial and subequatorial regions of the earth.Evapotranspiration rates are also highest in areas with a hot and dry climate. In the Southwest United Statesfor instance, evapotranspiration is about 100% of the total precipitation for the area. This is because the area has a large amount of warm, sunny days throughout the year paired with little precipitation. When these combine, evaporation is at its highest.
By contrast, the Pacific Northwest's evapotranspiration is only about 40% of yearly precipitation. This is a much colder and wetter climate so evaporation is not as prevalent. In addition, it has a higher latitude and less direct solar radiation.
Potential EvapotranspirationPotential evapotranspiration (PE) is another term used in the study of evapotranspiration. It is the amount of water that could evaporate and transpire under conditions with adequate precipitation and soil-moisture supply. It is usually higher in the summer, on sunny days, and at latitudes closest to the equator due to the aforementioned reasons.Potential evapotranspiration is monitored by hydrologists because it is useful in predicting the evapotranspiration of an area and as it usually peaks in the summer, it is helpful in monitoring potential drought situations.
Potential evapotranspiration combined with examining the factors contributing to actual evapotranspiration gives hydrologists an understanding of what an area's water budget will be after water is lost to this process. Because so much water is lost and drought is always a concern for many areas around the globe, evapotranspiration is an important topic in the study of both physical and human geography.
The main function of leaves is photsynthesis (converting sunlight into food for the plant), but they also release excess water through transpiration.
The wax cuticle covers the upper epidermis. The main task of the cuticle is to activate cuticular transpiration in a plant. Sometimes a very shiny cuticle may be present in a plant to minimize transpiration of the plant. It basically reflects back sunlight. These are the two main functions.
the main cause of transpiration in plants is because transpiration means loss or gain of water in plants or give off water vapour from the leaves which is necessary for the process of photosynthesis
transpiration is the loss of water conducted by plant through the stomata. the evaporation of water from the leaves results in a suction force which pulls the water up the xylem vessels and out through the stomata. this suction force due to transpiration is the main factor in lifting water and dissolved mineral salts up the plant from the roots to the leaves. respiration on the other hand is a process wereby plants obtain energy by the oxidation of food substances, glucose in other words. this energy is thus utilized for cellular activities and in various chemical reactions going on inside the plant. breathing, a part of respiration, is completely different from transpiration as it involves gaseous exchange from the atmospheric air.
The main processes that return water vapor to the atmosphere are evaporation and transpiration. Evaporation occurs when liquid water changes into water vapor from sources such as oceans, lakes, and rivers. Transpiration is the process through which plants release water vapor from their leaves into the atmosphere. Both of these processes contribute to the water cycle by replenishing the atmosphere with water vapor.
Transpiration
(1) The leaves make food for the plant by photosynthesis. (2) The leaves get rid of excess water from the plant through transpiration. (3) The leaves carry out the process of respiration in plants. The leaves make food for the plant by the process of photosynthesis.
Leaves main function is photo synthesis. And also which perform respiration and transpiration.
Transpiration has got two main functions. The two functions of transpiration is pumping minerals and water to the leaves for photosynthesis and cooling the plant.
The sun is the main source of heat, and transpiration is heat-driven because when water gets hot, it evaporates. Transpiration is water evaporating from the stomates of a leaf.
The leaves of a plant have three main functions: 1-They help in photosynthesis 2-They help the plant to respire(transpiration) 3-They store various food material
The leaves of a plant have three main functions: 1-They help in photosynthesis 2-They help the plant to respire(transpiration) 3-They store various food material
The main function of leaves is photsynthesis (converting sunlight into food for the plant), but they also release excess water through transpiration.
The wax cuticle covers the upper epidermis. The main task of the cuticle is to activate cuticular transpiration in a plant. Sometimes a very shiny cuticle may be present in a plant to minimize transpiration of the plant. It basically reflects back sunlight. These are the two main functions.
The Waxy cuticle in a plant is situated above the upper epidermis. The waxy cuticle provides protection to the epidermis. But the main task of the waxy cuticle is to increase and decrease transpiration of water in a plant accordingly. The cuticle helps in cuticular transpiration of plants and sometimes you can find a shiny cuticle in a plant in order to reflect back the sunlight and prevent transpiration. Having a shiny cuticle is one of the adaptations of a plant to reduce transpiration. These are the 2 main functions of a cuticle.
It is the main process. the process making Carbohydrates.
There are four main types of plant propagation -cuttingdividingsowing seedair layering