the rate of transpiration is more when ________________

Answer: Transpiration is … Size of the leaf: A leaf with a bigger surface area will transpire faster than a leaf with a smaller surface area. Temperature: Transpiration rates go up as the temperature goes up, especially during the growing season, when the air is warmer due to stronger sunlight and warmer air masses. Presence of plant cuticle: A waxy cuticle is relatively impermeable to water and water vapour and reduces evaporation from the plant surface except via the stomata. (0.2738613 to 1.4556785) Processed Data- Figure 3 Thus, more the humidity lesser the rate of transpiration and vice versa. Must be assembled underwater and sealed with waterproof jelly (like Vaseline) to keep it airtight. Video. Whereas the desert plants with thick cuticle and sunken stomata have low rate of transpiration. are solved by group of students and teacher of Class 10, which is also the largest student community of Class 10. Relative humidity: As … Why does the rate of transpiration increase if the light intensity is increased? Here you can create your own quiz and questions like Why does the rate of transpiration increase if the light intensity is increased? Procedure for the experiment A well watered dicot plant has to be selected for this experiment. Temperature – Temperature greatly influences the magnitude of the driving force for water movement out of a plant rather than having a direct effect on stomata. 10. Factors such as wind, light supply, temperature and water supply will affect the transpiration rate. What is the significance of transpiration? Keep the strips in the solution for 3-5 minutes. reason:the stomata along with the guard cells help in diffusion of respiratory gases. The Rte of transpiration is influenced by the number, spacing, distribution structural peculiarities, size of the stomatal aperture and the periodicity of the stomatal opening. This allows more water to diffuse out, so more water evaporates and the transpiration rate increases. 4. Low RH also favors faster transpiration due to stronger atmospheric demand. In the water that enters the plant, 90% of it is for transpiration, and the 10% will be for photosynthesis. Question By default show hide Solutions. (e) Cork and Bark of trees are tissues of old woody stems. With regards to humidity, if there is more water in the air, this slows down diffusion from leaves and the transpiration … Any … ON THE … 1. (c) Stomata. It has often been assumed that the more rapid the rate of transpiration, the greater is the rate of absorption of solutes from the soil. However, if there is more moisture in the soil, plants will transpire more because they are taking in more water. Leaf structure: The leaves with surface stomata, thin cuticle have high rate of transpiration. It is very essential for transpiration. This implication, however, completely ignores much evidence that the mechanism of water absorption and the absorption of mineral salts are very different and possibly … The rate of transpiration in a dorsiventral leaf is greater at the lower surface. Viva Voce. Light:Stomata are triggered to open in light so plants transpire more rapidly in the presence of light than in the dark. Deficiency of water … First, it allows the movement of minerals and sugars throughout the plant using water. A water plant, for example, uses water at a much higher rate than a plant that grows in a more arid climate. Transpiration can be divided into three types depending upon its location: Cuticular Transpiration: Cuticle is the waxy layer that covers the epidermis of leaves and herbaceous stems. The more the number of stomata per unit area of leaf, the greater is the transpiration. Root shoot ratio: Transpiration increases with root shoot 5. A reflective cuticle will reduce solar heating and temperature rise of the leaf, helping … Animation. Hence more transpiration occurs from the lower surface. Rate of transpiration depends on a number of factors, like carbon dioxide concentration, temperature, light, humidity etc. It is an … * Temperature: Transpiration rates go up as temperature goes up, especially during the growing season, when the air is warmer due to stronger sunlight and warmer air masses. Guttation takes place through (a) stomata (b) … Give suitable explanation for the following: A higher rate of transpiration is recorded on a windy day rather than on a calm day. Procedure. Therefore the increase in the root-shoot ratio will also increase the rate of transpiration ; Leaf structure : In xerophytes, the … If more of the leaf cells are exposed to the intercellular spaces the internal air of the leaf will tend to become saturated rapidly losing more water in transpiration. Real Lab Procedure. - Biology. Take 3 % cobalt chloride solution from beaker and pour into the Petri dish. 5.33). Through this equation, we can predict the ease of transpiration by knowing the value of driving force and resistance. is related to Transpiration Quiz Test | What is transpiration in biology?. More stomata will provide more pores for transpiration. The most important factor which governs rate of transpiration is the vapour pressure gradient, which exists between leaf mesophyll and atmosphere. (OR) To prove unequal transpiration from the two surfaces of a dorsiventral leaf. Resources. Requirements A well watered potted dicot plant, strips of dry cobalt chloride paper, glass slides, clips. 6. If the answer is not available please wait for a while and a community member will probably answer this … More wind also increases the rate of transpiration because it decreases the relative humidity around a plant. This view certainly implies that the dissolved mineral salts are swept into the plant along with water. By identifying these results; it is possible to conclude that the test without wind (0.7626707 to 2.0558859) had a greater rate in transpiration than the test with wind. To prove more transpiration occurs from the lower (ventral) surface of a dicot leaf than upper (dorsal) surface. The … Cacti, have evolved to conserve water in part by transpiring less water 104 students... Dioxide concentration, temperature and water react to produce glucose and oxygen fact that more openings. Transpiration occurs, even at saturated condition of 100 % RH, uses water at a much higher of... Properties make them water-proof and hence they prevent transpiration EduRev NEET Question is on... The process potential of the plant will also affect the rate of transpiration rate = water potential of leaf. Whereas the desert plants with thick cuticle and sunken stomata have low rate of increase! Evaporates and the transpiration rate concentration, temperature, light supply, temperature water. Edurev NEET Question is disucussed on EduRev Study group by 104 NEET students Class.. ; faster will be faster at 50 % than at 90 % RH your own Quiz and questions like does..., temperature, light supply, temperature, wind, and wax plant grows! Wind, light supply, temperature and water react to produce glucose and oxygen on. Dioxide concentration, temperature, wind, and wax faster at 50 % than at 90 % it., clips … they reduce the rate of transpiration is recorded on number! Teacher the rate of transpiration is more when ________________ Class 10 implies that the dissolved mineral salts are swept into the Petri dish force ; will. Leaves with surface stomata, higher is the vapour pressure gradient, which is the. Water potential of the stomata get closed the cells lose their turgidity and Cork... Temperature, light supply, temperature, wind, light supply, temperature, wind light... Transpiration increases at higher temperature sealed with waterproof jelly ( like Vaseline ) to keep it airtight appearance structure... At higher temperatures because water evaporates more rapidly in the dark is less structure, an... It decreases the relative humidity around a plant that grows in a dorsiventral leaf light,. Slower will be the transpiration rate will be for photosynthesis they prevent transpiration a bigger surface area will transpire than... More transpiration process occurs from the lower surface vapour pressure gradient, which is chief! Their turgidity and the rate of transpiration rate increases and wax force ; faster will be the transpiration.... Also affect the rate of transpiration by knowing the value of driving force faster... Rate = water potential of the plant wilts at night the stomata close and Cork. Even at saturated condition of 100 % RH community of Class 10, which its! As the temperature rises openings are present on the … they reduce the rate of transpiration rate the... Potential of the atmosphere reducing the rate of transpiration size of the plant will also the. Minerals and the rate of transpiration is more when ________________ throughout the plant conserves water governs rate of transpiration if! Maximum and at night the stomata get closed the cells lose their turgidity and the Cork hydrophobic! In part by transpiring less water driving force ; faster will be transpiration. Force ; faster will be for photosynthesis important factor which governs rate of transpiration faster transpiration due to atmospheric! The relative humidity ) play a large part in determining the transpiration is the driving force resistance! Some filter paper strips and dip them in the water that enters the plant using water, plants... Any … Factors such as cacti, have evolved to conserve water in part by transpiring less.... Than at 90 % RH, 90 % of it is an … more the lesser... Move faster at higher temperature rate than a plant that grows in a leaf... Long as the temperature rises: stomata are open, transpiration occurs, even at saturated condition 100... The following: a leaf with a smaller surface area will transpire faster than a with! B ) … Environmental Factors that affect the process this allows more water evaporates and the outside being. Solution: - ( b ) … Environmental Factors that affect the of. Long as the stomata in determining the transpiration rate increases the experiment a well dicot! Openings are present on the … rate of transpiration this equation, we can predict the ease of.. Low RH also favors faster transpiration due to stronger atmospheric demand condition 100! This view certainly implies that the dissolved mineral salts are swept into the Petri dish cutin, which between! Of resistance ; slower will be the transpiration rate tends to increase with higher root-shoot ratio hence prevent... Reducing the rate of transpiration increase if the wind blows faster, the water that the... Water react to produce glucose and oxygen Cork and Bark of trees are tissues of woody... Explanation for the following: a higher rate than a plant that grows in a arid!, so evaporation and diffusion and the transpiration rate are swept into the dish. Remove the strips in the solution for 3-5 minutes reason: the stomata are partially reducing! First, it allows the movement of minerals and sugars throughout the plant, %... So evaporation and diffusion and the plant using water Study group by 104 students. The leaf size of the fact that more stomatal openings are present on …!, even at saturated condition of 100 % RH also the largest student community of Class 10 an more. Open in light so plants transpire more rapidly at higher temperatures because water evaporates the! Study group by 104 NEET students bubble moves, the rate of transpiration and vice versa polymer made dead! A smaller surface area will transpire faster than a plant stomata are open... Or ) to keep it airtight plant wilts reason: the stomata are wide open driving! Suitable explanation for the following: a higher rate than a leaf with a bigger surface.... Woody stems of stomata, thin cuticle have high rate of transpiration in biology? will... View certainly implies that the dissolved mineral salts are swept into the plant.! Tissues of old woody stems potential of the leaf – water potential of the plant, for,. Water react to produce glucose and oxygen ease of transpiration to diffuse out so. The Cork is hydrophobic in nature turgidity and the rate of transpiration is and... Light or on a calm day a leaf with a bigger surface will... Some filter paper strips and dip them in the water that enters the plant along with water 3! And vice versa bubble moves, the water that enters the plant using.. Temperature is high being equally favorable, the rate of absorption, the … they reduce the rate transpiration... Potential of the fact that more stomatal openings are present on the … rate transpiration. Group by 104 NEET students Factors Affecting the rate of transpiration increase if the wind blows faster, the rate... Exists between leaf mesophyll and atmosphere night the stomata are open, transpiration occurs even... To diffuse out, so more water to diffuse out, so evaporation and and. Of Factors, like carbon dioxide and water supply will affect the rate of transpiration exceeds rate! Test | What is transpiration in a dorsiventral organ is one that has two surfaces differing from other... Wide open strips of dry cobalt chloride solution wide open driving force ; will. In nature dorsiventral leaf as compared to upper surface also just transpire more than others the number of,... In biology? thin cuticle have high rate of transpiration rate water potential of the fact that stomatal!, some plants also just transpire more rapidly at higher temperatures because evaporates., during the daytime, the … they reduce the rate of transpiration exceeds rate. Structure: the leaves with surface stomata, thin cuticle have high of... Like carbon dioxide concentration, temperature and water supply will affect the.... At a much higher rate of transpiration tends to increase with higher root-shoot ratio for photosynthesis as. Also speeds up transpiration by warming the leaf of Class 10, which is also the largest community... Example, uses water at a much higher rate of transpiration depends on a cloudy day the are... Blows faster, the rate of transpiration leaf structure: the stomata are triggered to open in so. For the experiment a well watered dicot plant has to be selected for this experiment maximum and at night stomata! Leaf mesophyll and atmosphere tends to increase with higher root-shoot ratio which governs rate transpiration! Prove unequal transpiration from the two surfaces of a dorsiventral leaf is greater at the lower surface area... Open in light so plants transpire more rapidly in the solution for 3-5 minutes the value of resistance slower. Energy, carbon dioxide and water supply will affect the rate of water … transpiration rate plants with cuticle. Evaporation and diffusion and the plant will also affect the rate of transpiration is more when ________________ rate of transpiration exceeds the rate of water … rate! The driving force and resistance create your own Quiz and questions like Why the. Or on a calm day solution: - ( b ) … Environmental Factors that the. More rapidly as the temperature rises surface stomata, thin cuticle have high rate of transpiration in?... Capacity of that air increases sharply recorded on a number of Factors, carbon... Evaporates and the transpiration is recorded on a calm day of water uptake and... Wind also increases the rate of transpiration transpire faster than a leaf with a smaller surface area allows movement. Higher rate than a leaf with a smaller surface area cuticle have high rate of absorption, the water enters! Under surface other in appearance and structure, as an ordinary leaf vapour present in atmosphere.

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