Transpiration is the process through which plants release water vapor into the atmosphere from their leaves. A common example of transpiration can be observed on a sunny day when a plant, such as a tomato plant, absorbs water from the soil through its roots. As the temperature rises and the plant undergoes photosynthesis, it expels water vapor through small openings called stomata on the undersides of its leaves. This process not only helps the plant regulate its temperature but also plays a crucial role in nutrient uptake and maintaining water balance within the plant.