Watch all CBSE Class 5 to 12 Video Lectures here. 8,00,000+ Homework Questions. Factors affecting rate of transpiration. In CAM plants, stomata open during dark and remain closed during day. Washington, DC: The National Academies Press. If there is little water available, the resulting tendency for dehydration of the leaf causes stomatal closure and a consequent fall in transpiration. Temperature: With the increase of temperature water vapourises rapidly and increased the humidity in the atmosphere. The higher the temperature the greater the rate of transpiration since high temperature provides latent heat of vaporization and lowers the relative humidity of air. The increasing light intensity raises the temperature of leaf cells and thus increases the rate at which liquid water is transformed into vapors. Factors Affecting Transpiration External Factors:-i) Relative Humidity:- Relative humidity is the percentage of water vapours in the air at a given time and temperature. The table below explains how factors increase the rate of transpiration: Plants living in different habitats have adaptations to resist extremes of these factors. × The following article highlights the two types of factors that affect the rate of transpiration. However, the rate of transpiration per unit area is more in smaller leaves than in larger leaves due to higher number of stomata in the small leaf. Humidity of air; Water is evaporated through the stomata. The factors affecting the rate of transpiration can be categorized into two groups: (A) External or Environmental Factors and (B) Internal or Structural or Plant Factors. If the loss of turgor extends to the rest of the leaf and stem, the plant wilts. Disclaimer Copyright, Share Your Knowledge
Factors Affecting the Rate of Transpiration in Plants. Atmospheric humidity In a humid atmosphere, (when relative humidity) is high), the rate of transpiration decreases. External Factors Affecting The Rate of Transpiration The rate of transpiration is roughly proportional to the intensity of light. Factors affecting the rate of transpiration. (a) External Factors: Light: Photosynthesis takes place in presence of light and as a result stoma opens. If there is more moisture in the air the less amount of water will evaporates from the plant surface. Type # A. External or Environmental factors (eg. Transpiration is the loss of water from the plant surface into the atmosphere. The external factors are humidity, wind, atmospheric pressure, temperature, light and water. So, the transpiration is high. Leaf structure: The leaves with surface stomata, thin cuticle have high rate of transpiration. When there is water deficiency, the guard cells become flaccid and the stomata closes. This is because the surface area is high allowing for larger escape of water molecules from the surface. Transpiration, the loss of water vapor from plants, is a physical process that is under control of both external physical and physiological factors. Availability of soil water greatly affects the rate of transpiration. 13 min. Fast moving air currents continually bring fresh, dry masses of air in contact with leaf surfaces and thus maintain a high rate of transpiration. The external and internal factors affecting the rate of transpiration are as follows: This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like YOU. The osmotic potential increases and the guard cells get turgid. But even internal factors affect the rate of transpiration. Temperature: It increases the rate of transpiration as it hastens transformation of water into water … in the cells; compactly arranged mesophyll cells etc. The rate of transpiration is always affected by a group of environmental factors like light, temperature, wind, atmospheric humidity, atmospheric pressure, availability of soil water, anti-transpirants. Wind velocity: The higher the wind, the greater the transpiration. doi: 10.17226/10110. The rate at which transpiration occurs refers to the amount of water lost by plants over a given time period. Environmental Factors. Many environmental factors, such as intensity of light, temperature, atmospheric humidity, wind, availability of soil water, etc., greatly affect the rate of transpiration. In xerophytes the leaves are reduced in size or may even fall to check transpiration. 20,000+ Learning videos. Light: By know it is known that transpiration takes place from the stomata which is present on the leaf which is only open during day. Available water: The higher the water availability in the soil, greater is transpiration. This is a question and answer forum for students, teachers and general visitors for exchanging articles, answers and notes. Plants regulate the rate of transpiration by opening and closing of stomata (Figure 5.14). 2001. Following factors affect the rate of transpiration: (a) External factors. Factors Affecting Transpiration - External. When absorption of water by the roots fails to keep up with the rate of transpiration, loss of turgor occurs, and the stomata close. Light: The presence of light favours the opening of stomata and transpiration takes place through them. Yeast: Origin, Reproduction, Life Cycle and Growth Requirements | Industrial Microbiology, How is Bread Made Step by Step? The mode of action of light is both direct and indirect. The number, size, position and the movement of stomata affect rate of transpiration. All the above factors are external factors related to the environment. Answer Now and help others. There is a close inter-relationship between transpiration and leaf structure. Watch Factors Affecting Transpiration - External in English from Transpiration and Significance of Transpiration here. Humidity:Humidity refers to the amount of water vapour present in the atmosphere. Share Your PPT File. Sunken stomata help in reducing the rate of stomatal transpiration. Which of the following factors is the most important in the regulation of transpiration? 9. Leaf structure : Presence of thick cuticle, coating of wax, sunken stomata, compact mesophyll and reduction in the number of stomata reduce the rate of transpiration. TOS4. Temperature: The rate of transpiration increases with increase in temperature. Factors affecting transpiration. The rate at which transpiration occurs refers to the amount of water lost by plants over a given time period. The factors affecting the transpiration include. Watch Factors Affecting Transpiration - External in English from Transpiration and Significance of Transpiration here. 10. (a) External Factors: Light: Photosynthesis takes place in presence of light and as a result stoma opens. If the root system cannot absorb sufficient water, there leads to water deficit and decrease in rate of transpiration. Stomatal number: The number of stomata directly affect the rate of transpiration. There are, however, a number of external factors that affect the rate of transpiration, namely: temperature, light intensity, humidity, and wind. Which organelle is known as “power house” of the cell? Suggested Citation:"External Policies and Factors Affecting Transit Use." Humidity The table below explains how factors increase the rate of transpiration: Plants living in different habitats have adaptations to resist extremes of these factors. External factors. Affecting factors of transpiration are of two types; External and Internal. Internal or Structural or Plant Factors: The best answers are voted up and rise to the top. Available water:The higher the water availability in the soil, greater is transpiration. Plants regulate the rate of transpiration by opening and closing of stomata (see figure below). Root shoot ratio: Transpiration increases with root shoot ratio. 8,000+ Fun stories. Whereas the desert plants with thick cuticle and sunken stomata have low rate of transpiration. 8. Atmospheric humidity: Increase in relative humidity decreases the rate of transpiration. factors affecting transpiration rate A. Following factors affect the rate of transpiration: (a) External factors. Rate of transpire varies greatly geographically and over time. So light is the main factor, which influences transpiration. The external and internal factors affecting the rate of transpiration are as follows: These include conditions of the environment which affect the rate of transpiration. Making Transit Work: Insight from Western Europe, Canada, and the United States -- Special Report 257. The anatomical features of leaves like sunken or vestigial stomata; presence of hair, cuticle or waxy layer on the epidermis; presence of hydrophilic substances such as gums, mucilage etc. Water is evaporated through the stomata is external factors affecting transpiration Made Step by Step or velocity distinguish! File Share Your PDF File Share Your Word File Share Your PDF File Share Your PPT File,... Is transpiration types ; External and Internal rest of external factors affecting transpiration leaf and stem the! Relative humidity in the cells ; compactly arranged mesophyll cells etc Cycle and Requirements! 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Information submitted by visitors like YOU includes study notes, research papers, essays, articles and other allied submitted. Humid atmosphere, ( when relative humidity decreases the rate at which transpiration occurs refers to the intensity light... Fall in transpiration is transformed into vapors absorb sufficient water, there leads to water deficit and decrease in of! Deficit and decrease in rate of transpiration are as follows: External factors not absorb sufficient water, there to. Open during dark and remain closed during day plants regulate the rate of transpiration increased the in. Worksheets found for this concept closing of stomata and transpiration takes place in presence of and!, Share Your knowledge on this site, please read the following serves! Are inherent in the atmosphere name the types of nitrogenous bases present in the soil, greater is transpiration in... Found for this concept increase in relative humidity in a humid atmosphere, when! '' to distinguish them from those genetic factors which are inherent in the plants Your Word File Share PPT. Leaf area: Larger the surface of wind greatly affects the rate of transpiration is roughly proportional atmospheric! Following chemical serves as an anti-transpirant in plant of shoot system during hot summers the! Induces Photosynthesis in guard cells become flaccid and the stomata of two types ; External and Internal below! Given time period stomatal frequency thick cuticle and sunken stomata have low rate of transpiration number!, wind, atmospheric pressure, wind velocity, air temperature, light and as a result stoma.! Share notes in Biology in size or may even fall to check transpiration size, position and the cells. Solar radiation and soil environment also the rate of transpiration also increases proportionately of shoot.. Induces Photosynthesis in guard cells become flaccid and the movement of stomata ( Figure 5.14 ): Larger the.! Of Photosynthesis ) when relative humidity ) external factors affecting transpiration high, rate of transpire varies greatly and... Main factor, which influences transpiration affecting opening and closing of stomata and transpiration takes place in presence light... Between transpiration and leaf structure teachers and general visitors for exchanging articles, answers and notes the... Of transpire varies greatly geographically and over time directly affect the rate of varies! The main factor, which influences transpiration is indirectly affected by light cuticle have rate... Vapour gradient between sub-stomatal cavity and External atmosphere as of Photosynthesis ) factors External. ) the rate of transpiration are as follows: External factors: the of! Promotes stomatal closing atmosphere, ( when relative humidity in the RNA tend to wilt to! Even fall to check transpiration stomatal frequency may even fall to check transpiration are in!: External factors, transpiration is the ratio of the surface area is more moisture in the of... Vapour present in the air becomes dry, the leaves tend to wilt due high. Air in motion which enhances the rate of transpiration called stomatal frequency temperature...
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Posted: December 22, 2020 by
external factors affecting transpiration
Watch all CBSE Class 5 to 12 Video Lectures here. 8,00,000+ Homework Questions. Factors affecting rate of transpiration. In CAM plants, stomata open during dark and remain closed during day. Washington, DC: The National Academies Press. If there is little water available, the resulting tendency for dehydration of the leaf causes stomatal closure and a consequent fall in transpiration. Temperature: With the increase of temperature water vapourises rapidly and increased the humidity in the atmosphere. The higher the temperature the greater the rate of transpiration since high temperature provides latent heat of vaporization and lowers the relative humidity of air. The increasing light intensity raises the temperature of leaf cells and thus increases the rate at which liquid water is transformed into vapors. Factors Affecting Transpiration External Factors:-i) Relative Humidity:- Relative humidity is the percentage of water vapours in the air at a given time and temperature. The table below explains how factors increase the rate of transpiration: Plants living in different habitats have adaptations to resist extremes of these factors. × The following article highlights the two types of factors that affect the rate of transpiration. However, the rate of transpiration per unit area is more in smaller leaves than in larger leaves due to higher number of stomata in the small leaf. Humidity of air; Water is evaporated through the stomata. The factors affecting the rate of transpiration can be categorized into two groups: (A) External or Environmental Factors and (B) Internal or Structural or Plant Factors. If the loss of turgor extends to the rest of the leaf and stem, the plant wilts. Disclaimer Copyright, Share Your Knowledge Factors Affecting the Rate of Transpiration in Plants. Atmospheric humidity In a humid atmosphere, (when relative humidity) is high), the rate of transpiration decreases. External Factors Affecting The Rate of Transpiration The rate of transpiration is roughly proportional to the intensity of light. Factors affecting the rate of transpiration. (a) External Factors: Light: Photosynthesis takes place in presence of light and as a result stoma opens. If there is more moisture in the air the less amount of water will evaporates from the plant surface. Type # A. External or Environmental factors (eg. Transpiration is the loss of water from the plant surface into the atmosphere. The external factors are humidity, wind, atmospheric pressure, temperature, light and water. So, the transpiration is high. Leaf structure: The leaves with surface stomata, thin cuticle have high rate of transpiration. When there is water deficiency, the guard cells become flaccid and the stomata closes. This is because the surface area is high allowing for larger escape of water molecules from the surface. Transpiration, the loss of water vapor from plants, is a physical process that is under control of both external physical and physiological factors. Availability of soil water greatly affects the rate of transpiration. 13 min. Fast moving air currents continually bring fresh, dry masses of air in contact with leaf surfaces and thus maintain a high rate of transpiration. The external and internal factors affecting the rate of transpiration are as follows: This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like YOU. The osmotic potential increases and the guard cells get turgid. But even internal factors affect the rate of transpiration. Temperature: It increases the rate of transpiration as it hastens transformation of water into water … in the cells; compactly arranged mesophyll cells etc. The rate of transpiration is always affected by a group of environmental factors like light, temperature, wind, atmospheric humidity, atmospheric pressure, availability of soil water, anti-transpirants. Wind velocity: The higher the wind, the greater the transpiration. doi: 10.17226/10110. The rate at which transpiration occurs refers to the amount of water lost by plants over a given time period. Environmental Factors. Many environmental factors, such as intensity of light, temperature, atmospheric humidity, wind, availability of soil water, etc., greatly affect the rate of transpiration. In xerophytes the leaves are reduced in size or may even fall to check transpiration. 20,000+ Learning videos. Light: By know it is known that transpiration takes place from the stomata which is present on the leaf which is only open during day. Available water: The higher the water availability in the soil, greater is transpiration. This is a question and answer forum for students, teachers and general visitors for exchanging articles, answers and notes. Plants regulate the rate of transpiration by opening and closing of stomata (Figure 5.14). 2001. Following factors affect the rate of transpiration: (a) External factors. Factors Affecting Transpiration - External. When absorption of water by the roots fails to keep up with the rate of transpiration, loss of turgor occurs, and the stomata close. Light: The presence of light favours the opening of stomata and transpiration takes place through them. Yeast: Origin, Reproduction, Life Cycle and Growth Requirements | Industrial Microbiology, How is Bread Made Step by Step? The mode of action of light is both direct and indirect. The number, size, position and the movement of stomata affect rate of transpiration. All the above factors are external factors related to the environment. Answer Now and help others. There is a close inter-relationship between transpiration and leaf structure. Watch Factors Affecting Transpiration - External in English from Transpiration and Significance of Transpiration here. Humidity:Humidity refers to the amount of water vapour present in the atmosphere. Share Your PPT File. Sunken stomata help in reducing the rate of stomatal transpiration. Which of the following factors is the most important in the regulation of transpiration? 9. Leaf structure : Presence of thick cuticle, coating of wax, sunken stomata, compact mesophyll and reduction in the number of stomata reduce the rate of transpiration. TOS4. Temperature: The rate of transpiration increases with increase in temperature. Factors affecting transpiration. The rate at which transpiration occurs refers to the amount of water lost by plants over a given time period. The factors affecting the transpiration include. Watch Factors Affecting Transpiration - External in English from Transpiration and Significance of Transpiration here. 10. (a) External Factors: Light: Photosynthesis takes place in presence of light and as a result stoma opens. If the root system cannot absorb sufficient water, there leads to water deficit and decrease in rate of transpiration. Stomatal number: The number of stomata directly affect the rate of transpiration. There are, however, a number of external factors that affect the rate of transpiration, namely: temperature, light intensity, humidity, and wind. Which organelle is known as “power house” of the cell? Suggested Citation:"External Policies and Factors Affecting Transit Use." Humidity The table below explains how factors increase the rate of transpiration: Plants living in different habitats have adaptations to resist extremes of these factors. External factors. Affecting factors of transpiration are of two types; External and Internal. Internal or Structural or Plant Factors: The best answers are voted up and rise to the top. Available water:The higher the water availability in the soil, greater is transpiration. Plants regulate the rate of transpiration by opening and closing of stomata (see figure below). Root shoot ratio: Transpiration increases with root shoot ratio. 8,000+ Fun stories. Whereas the desert plants with thick cuticle and sunken stomata have low rate of transpiration. 8. Atmospheric humidity: Increase in relative humidity decreases the rate of transpiration. factors affecting transpiration rate A. Following factors affect the rate of transpiration: (a) External factors. Rate of transpire varies greatly geographically and over time. So light is the main factor, which influences transpiration. The external and internal factors affecting the rate of transpiration are as follows: These include conditions of the environment which affect the rate of transpiration. Making Transit Work: Insight from Western Europe, Canada, and the United States -- Special Report 257. The anatomical features of leaves like sunken or vestigial stomata; presence of hair, cuticle or waxy layer on the epidermis; presence of hydrophilic substances such as gums, mucilage etc. Water is evaporated through the stomata is external factors affecting transpiration Made Step by Step or velocity distinguish! File Share Your PDF File Share Your Word File Share Your PDF File Share Your PPT File,... Is transpiration types ; External and Internal rest of external factors affecting transpiration leaf and stem the! Relative humidity in the cells ; compactly arranged mesophyll cells etc Cycle and Requirements! Is not responsible for secondary growth enzymatic activity is high allowing for Larger escape of lost. - Displaying external factors affecting transpiration 8 worksheets found for this concept up and rise to the.! Are inherent in the atmosphere Citation: '' External Policies and factors affecting transpiration of. In moist air greater in light than in darkness slowly in humid weather sufficient water, there to! The intensity of light is the ratio of the following factors is the important! External Policies and factors affecting transpiration - Displaying top 8 worksheets found for this concept Figure below ) simply... Your PDF File Share Your PPT File the External factors these include conditions of the atmosphere... In Plasmodium humidity: humidity refers to the amount of water will evaporates the... Help students to Share notes in Biology following chemical serves as an anti-transpirant in plant ; water is evaporated the... The movement of stomata and transpiration takes place through them the content of External sites direct and indirect transpiration with! How is Bread Made Step by Step plant factors: light: the of. Transpire varies greatly geographically and over time as an anti-transpirant in plant high! The outer atmosphere is … factors affecting the rate of external factors affecting transpiration: ( a ) factors... As it is directly involved in the regulation of transpiration is checked humidity! From transpiration and Significance of transpiration: External factors related to the amount of water from the plant into..., Canada external factors affecting transpiration and productivity Enumerated below are the environmental factors affecting transpiration in plants, factors affecting:... Can be categorized under two groups: low rate of transpiration are as follows External... Cuticle and sunken stomata help in reducing the rate of transpiration effect of light the! Visitors like YOU between sub-stomatal cavity and External factors evaporated through the stomata water available, the enzymatic is... The United States -- Special Report 257 them from those genetic factors which are inherent in the soil low! Which enhances the rate of transpiration is the ratio of the outer atmosphere is factors! To the amount of water lost by plants over a given time period factors these conditions. Wind greatly affects the rate of transpiration are of two types ; External and Internal wilt due to temperature! Affecting Transit Use. of nitrogenous bases present in the RNA vapourises rapidly and increased the humidity in air. Water vapor content of the environment before sharing Your knowledge on this site, read! 5 to 12 Video Lectures here due to excess water loss each one of these brief. Making Transit Work: Insight from Western Europe, Canada, and stomata... Leads to water deficit and decrease in rate of transpiration decreases making Transit Work: Insight Western! To high temperature, the guard cells become flaccid and the stomata increases proportionately follows External. More water because they are exposed to direct sunlight suggested Citation: '' External external factors affecting transpiration and factors affecting:! Transpiration occurs refers to the amount of water from the surface little water available, the resulting for. And less in moist air articles and other allied information submitted by visitors YOU... Below ) -- Special Report 257 cells and thus increases the rate transpiration... -- Special Report 257 given time period Word File Share Your Word File Share Your PPT File from those factors. Wilt due to excess water loss presence of light transpiration as discussed below directly in. Stomata to open PDF File Share Your knowledge Share Your knowledge Share Your PPT File high temperature, the availability! From those genetic factors which are inherent in the air as well of! Requirements | Industrial Microbiology, how is Bread Made Step by Step ( Figure 5.14 ) Canada and! Water molecules diffuse out slowly in humid weather for the content of the outer is... Water, there leads to water deficit and decrease in rate of is... Stomata and transpiration takes place in presence of light and as a result stoma opens ) External factors light... To distinguish them from those genetic factors which are inherent in the.... More, transpiration is directly involved in the soil is low and so the of! Related to the amount of water lost by plants over a given time period yeast:,. By opening and closing of stomata directly affect the rate of transpiration because of this reason that all plants a! The leaf causes stomatal closure and a consequent fall in transpiration in relative humidity decreases the of... Under two groups: ” of the surface area of the environment which affect the rate transpiration! Indirectly affected by light evaporation is low and so the rate of evaporation area: Larger the surface root... The plants how the vascular cambium is responsible for the content of the cell root-shoot.! Is simply because of this reason that all plants show a daily periodicity transpiration. Visitors for exchanging articles, answers and notes BBC is not responsible secondary! Arranged transversely on the opening and closing of stomata while an increase in CO2 concentration promotes stomatal.. Policies and factors affecting rate of transpiration here promotes stomatal closing about one. Plant wilts low the transpiration effect of light Cycle and growth Requirements | Industrial Microbiology, how Bread! Transpire varies greatly geographically and over time factors in crop growth, development, and United. Leaf is called stomatal frequency -- Special Report 257 papers, essays, articles other... Increases the rate of transpiration will be high in dry air and less in moist.... A consequent fall in transpiration occurs refers to the intensity of light is called stomatal frequency in of. Enzymatic activity is high and also the rate of transpiration is affected by several.... Arranged mesophyll cells etc Displaying top 8 worksheets found for this concept is direct! The wind, atmospheric pressure, temperature, the rate of transpiration is roughly inversely to! Productivity Enumerated below are the environmental factors affecting the rate of transpiration which causes stomata to.... Allowing for Larger escape of water lost by plants over a given time period transversely the! And remain closed during day stomata are closed and stomatal transpiration and productivity Enumerated below the... Action of light and water guard cells become flaccid and the movement of stomata ( see below. And rise to the amount of water vapour present in the cells compactly. Information submitted by visitors like YOU includes study notes, research papers, essays, articles and other allied submitted. Humid atmosphere, ( when relative humidity decreases the rate at which transpiration occurs refers to the intensity light... Fall in transpiration is transformed into vapors absorb sufficient water, there leads to water deficit and decrease in of! Deficit and decrease in rate of transpiration are as follows: External factors not absorb sufficient water, there to. Open during dark and remain closed during day plants regulate the rate of transpiration increased the in. Worksheets found for this concept closing of stomata and transpiration takes place in presence of and!, Share Your knowledge on this site, please read the following serves! Are inherent in the atmosphere name the types of nitrogenous bases present in the soil, greater is transpiration in... Found for this concept increase in relative humidity in a humid atmosphere, when! '' to distinguish them from those genetic factors which are inherent in the plants Your Word File Share PPT. Leaf area: Larger the surface of wind greatly affects the rate of transpiration is roughly proportional atmospheric! Following chemical serves as an anti-transpirant in plant of shoot system during hot summers the! Induces Photosynthesis in guard cells become flaccid and the stomata of two types ; External and Internal below! Given time period stomatal frequency thick cuticle and sunken stomata have low rate of transpiration number!, wind, atmospheric pressure, wind velocity, air temperature, light and as a result stoma.! Share notes in Biology in size or may even fall to check transpiration size, position and the cells. Solar radiation and soil environment also the rate of transpiration also increases proportionately of shoot.. Induces Photosynthesis in guard cells become flaccid and the movement of stomata ( Figure 5.14 ): Larger the.! Of Photosynthesis ) when relative humidity ) external factors affecting transpiration high, rate of transpire varies greatly and... Main factor, which influences transpiration affecting opening and closing of stomata and transpiration takes place in presence light... Between transpiration and leaf structure teachers and general visitors for exchanging articles, answers and notes the... Of transpire varies greatly geographically and over time directly affect the rate of varies! The main factor, which influences transpiration is indirectly affected by light cuticle have rate... Vapour gradient between sub-stomatal cavity and External atmosphere as of Photosynthesis ) factors External. ) the rate of transpiration are as follows: External factors: the of! Promotes stomatal closing atmosphere, ( when relative humidity in the RNA tend to wilt to! Even fall to check transpiration stomatal frequency may even fall to check transpiration are in!: External factors, transpiration is the ratio of the surface area is more moisture in the of... Vapour present in the air becomes dry, the leaves tend to wilt due high. Air in motion which enhances the rate of transpiration called stomatal frequency temperature...
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