Nevertheless, there are a lot of differences between these two processes.
Evaporation and transpiration are both natural processes that help vapour formation through the loss of water. However, since they perform a similar function, it is often difficult to distinguish between evaporation and transpiration. Nevertheless, there are a lot of differences between these two processes. The differences between evaporation and transpiration is discussed below –
Most of us are familiar with the concept of evaporation, whereby water is converted from its liquid state to a gaseous state. Evaporation usually takes place when solar energy heats water on surface water bodies like oceans, rivers and ponds. Aside from water bodies, this process can also occur on other surfaces containing moisture such as soil and trees. Evaporation is a continuous process; however, the rate of evaporation at a given time can vary based on several factors. These factors are as follows –
The process through which plants absorb through their roots and then lose the excess water via stomata is known as transpiration. This process is similar to perspiration in human beings, preventing plant tissues from overheating when the temperature is high. Along with water, plants also gather essential nutrients from the soil. These nutrients are then transported to different parts of a plant such as stems and leaves through transpiration. Some External Factors Which Affect the Process of Transpiration Include –
The diagram below shows transpiration in plants – (image will be uploaded soon) The main differences between evaporation and transpiration have been illustrated in the table below
The total loss of water from the soil via evaporation and transpiration by plants is referred to as evapotranspiration. The concept of evapotranspiration is vital in relation to agriculture. It is because if evapotranspiration rates can be predicted in ahead, one can ascertain how much irrigation is required for crops. In addition to irrigation, evapotranspiration also affects soil moisture or the level of water that is in soil. The factors that determine evapotranspiration rate are – the crop type, soil type, temperature, soil moisture level, humidity and wind.
Ans. Leaves have tiny pores called stomata through which plants evaporate water.
Ans. External factors that affect the transpiration process are humidity, sunlight, amount of light available, temperature and wind.
Ans. The process through which water is circulated to different parts of a plant is known as transpiration. Whereas, respiration is the process where plants convert carbon dioxide to oxygen.
This is a physical process whereby liquid water changes to form water vapour.
This is a physiological process through which plants dispose of water.
Presence of water is required for this process
Living cells and tissues are required to carry out this process.
Evaporation can take place during both day and night
This process happens only during daytime
Compared to evaporation, this is a slow process
This process facilitates cloud formation and rainfall thereby maintaining the water cycle
Though this process leads to loss of water, it helps in cooling the leaves.
This process will continue as long as there is water present on the surface of the earth.
This process is determined by the availability of water in the soil.
Does not involve any uptake and circulation of minerals and nutrients.
Transpiration helps in circulation of minerals and nutrients in plants.