If water is low, the guard cells will collapse and close the stoma. Light: The rate of transpiration is roughly … Wind. Sunlight. However, for some plants, the increase in light intensity and amount does not increase the rate of transpiration. Temperature: Transpiration is faster on hot summer days as compared to cold winters. It decreases the rate of transpiration.D. question. It has marked effect on transpiration. Transpiration - Water Movement through Plants Authors Tracy M. Sterling, Department of Entomology, Plant Pathology and Weed Science, New Mexico State University Transpiration, as long as there is plenty of water at roots, will increase at high temperature . ... concentration gradient increases therefore transpiration happens faster. is related to Transpiration Quiz Test | What is transpiration in biology?. Leaf structure, type of stomata, root and shoot ratio, etc., may also affect the rate of transpiration. … Direct sunlight has the same effect as temperature as it warms the leaves up quicker. This is because at higher temperature, there is more evaporation of water from the mesophyll cells and therefore, there is greater saturation of the leaf atmosphere with water vapour. The rates are higher on bright dry days and lowest at night or in drought conditions. so, there is a large concentration gradient for diffusion However, if temperatures remain high for long periods of time eventually leading to drought, transpiration may go down to conserve water in the plant. warm = particles have more energy to evaporate and diffuse out of stomata. Most of the water absorbed by the roots of a plant—as much as 99.5 percent—is not used for growth or metabolism; it is excess water, and it leaves the plant through transpiration. Why does the rate of transpiration increase if the light intensity is increased? High temperature increases the risk of both heat damage and water shortage to plants. (If two people answer, the first one to answer the question correctly will get brainliest.) C. The air molecules are closer together in the upper stratosphere. Transpiration—the loss of water vapor to the atmosphere through stomata—is a passive process, meaning that metabolic energy in the form of ATP is not required for water movement.The energy driving transpiration is the difference in energy between the water in the soil and the water in the atmosphere. D. The stoma opens and transpiration occurs. Another reason is that air can hold more water vapor, which causes faster water vapor diffusion out of the leaf. With the increase in atmospheric temperature, the rate of transpiration also increases. Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers.Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. However, temperatures above 40 C causes the process to slow down. This is due to increase in the rate of evaporation of water from cell surface and decrease in the humidity of the external atmosphere. It decreases the amount of precipitation. describe an experiment estimating the rate of transpiration using a potometer. Transpiration: Transpiration is a process where plants lose water to the atmosphere through evaporation. The stratosphere is closest to the sun. So light indirectly induces transpiration. Temperature. Transpiration relies on diffusion. It increases the evaporation of water.C. Wind blowing on the surface can increase the rate of transpiration. At temperatures above 68 degrees Fahrenheit, or 20 degrees Celsius, the rate of photosynthesis decreases because the enzymes do not work as efficiently at this temperature. At 30°C, a leaf may transpire three times as fast as it does at 20°C. the contents of the leaf are less dilute). It is because the rate of water evaporation from the mesophyll cells increases. It also increases the capacity of the air to absorb more water. Light intensity. However, transpiration is tightly controlled. Humidity This lowers the water potential of the leaf (i.e. Transpiration rates are influenced by various environmental factors such as temperature, light, external humidity, air circulation and soil moisture, (Muller, 1979). 3. Why does temperature increase with altitude through the stratosphere? Factor # 3. Importance of Transpiration. Temperature plays a major role in the rate of transpiration. 2. Temperature: Temperature: The rate of transpiration increases with increase in temperature. 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