There is a close inter-relationship between transpiration and leaf structure. 2.2. 3. In the normal procedure, plant gets water from the soil. Created: Jul 4, 2020 | Updated: Sep 4, 2020. Factors Affecting Transpiration samabrhms11 2020-02-20T15:23:58+00:00. Lesson home; Transpiration - Overview and Objectives; Transpiration - Introduction; Transpiration - What and Why? Transpiration rates can alter in a leaf depending on environmental factors. Transpiration - What Controls Rates of Transpiration? There are different factors that can affect the rate of transpiration as discussed below. Transpiration is negligible in an atmosphere saturated with water. Transpiration is basically an evaporation process. Transpiration rate depends on various factors such as 1. … Factors affecting transpiration DISEASE Health and disease Pathogens and disease Preventing infections Disease caused by viruses, bacteria, fungi and protists Human defence responses Vaccination Antibiotics and painkillers100 Discovering and developing drugs Non-communicable diseases Cancer Smoking and the risk of disease Diet, exercise, and disease Alcohol and other carcinogens … Factors Affecting Transpiration: More light means there is more photosynthesis happening, so the stomata open as light intensity increase because oxygen is required, but more water leaves so transpiration increases. Internal factors affecting on transpiration 1. Water status of the plant. how does temperature affect transpiration how does light intensity affect transpiration factors affecting transpiration ppt plant factors affecting transpiration Factor Effecting the Transpiration 9th Class Biology Chapter 9 Transport Online Videos Lecture. Humidity slows the rate of transpiration because there is lower driving force for water vapor to get out of the leaf since there is already a higher RH (relative humidity) in the atmosphere. Temperature. Different environmental conditions trigger both the opening and closing of stomata. Factors affecting transpiration: External factors: Light: Transpiration is indirectly affected by light. Plant factors like 2.1. the number and distribution of stomata. AQA Combined Science Trilogy unit ‘Organising Animals and Plants’. Together, they form the most complex element of the traffic system – the human element – which differentiates Transportation Engineering from all other engineering fields. Light: The presence of light favours the opening of … If plant does not get water from the soil, the stomata remains closed. Factors affecting the rate of transpiration. 2. In dark stomata are closed and stomatal transpiration is checked. Transpiration - Factors Affecting Rates of Transpiration PLANT PARAMETERS – These plant parameters help plants control rates of transpiration by serving as forms of resistance to water movement out of the plant. 2.3. Transpiration also increases with decreasing relative humidty at constant wind velocity. Environmental factors like 1.1. temperature 1.2. relative humidity 1.3. wind speed etc. (ii) Climatic factors: Under field conditions incoming solar radiation supplies the energy for the process of evapotranspiration. When there is a high rate of wind activity, transpiration is relatively higher since the moist or humid air around the plant is quickly replaced by less humid air allowing the plant to release even more water into the atmosphere. 2.4. This will result in greater water loss. In general, the factors influencing evaporation and transpiration also govern the evapotranspiration process. the more rapid is the transpiration. Transpiration is affected greatly by the environment factors such as temperature, light relative humidity, wind, and so on. You will need to walk around the room and share the information to complete the following table in your books: Home / Edexcel IGCSE (9-1) Biology / Revision Notes / 10. There are, however, a number of external factors that affect the rate of transpiration, namely: temperature, light intensity, humidity, and wind. 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. factors affecting transpiration | MDCAT | Factors affecting the rate of transpiration At the end, there’s a creative writing exercise. Factors AffectingTranspiration Factors affecting the rate of transpiration. Sunken stomata help in reducing the rate of stomatal transpiration. As was shown in Section 5.3, the daily course of transpiration has a sinusoid character with a maximum at 11-13 hours. The number, size, position and the movement of stomata affect rate of transpiration. Sign in. ; The more humid the environment, the lower the water potential gradient between the inside and outside of plants, so less transpiration as diffusion out is slower. ID: 380819 Language: English School subject: Science Grade/level: 9 Age: 11-15 Main content: Factors affecting transpiration Other contents: Add to my workbooks (1) Download file pdf Add to Google Classroom Add to Microsoft Teams Factors affecting the rate of transpiration (ESG7K) This interactive website explains transpiration pull. In presence of light, the stomata remain open and hence transpiration takes place whereas in night time, the stomata are closed and transpiration is checked. 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