environmental conditions affected the rate of transpiration of a plant. The environmental factors we looked at were the affects of various temperatures and different light amounts in the different temperatures. We found that as the temperature warmed up‚ the rate of transpiration was higher. When the temperature was at five degrees Celsius‚ the rate of transpiration was very low. When we took out half of the light source and measured the rate of transpiration in the three temperatures we found the same
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control). 3. Explain why each of the conditions causes an increase or decrease in transpiration compared with the control. 4. How did each condition affect the gradient of water potential from the stem to leaf in the experimental plant? 5. What is the advantage to a plant of closed stomata when water is in short supply? What are the disadvantages? 6. Describe several adaptations that enable plants to reduce water loss from their leaves. Include both structural and physiological
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_______________ Title: Plant Transpiration Question: What factor affects the transpiration rate in plants? | Normal | With Fan | With Heater | With Lamp | Arrowhead | 3.6 | 7.5 | 6.6 | 4.0 | Coleus | 0.9 | 6.0 | 3.9 | 3.0 | Devil’s Ivy | 2.9 | 4.6 | 4.1 | 3.0 | Dieffenbachia | 4.1 | 7.7 | 6.0 | 3.9 | English Ivy | 1.8 | 5.1 | 3.2 | 2.1 | Geranium | 1.2 | 4.7 | 5.8 | 2.4 | Rubber Plant | 4.9 | 8.4 | 6.8 | 4.3 | Weeping Fig | 3.3 | 6.1 | 4.9 | 2.5 | Zebra Plant | 4.2 | 7.6 | 6.1
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TRANSPIRATION DESIGN LAB Transpiration is the process through which water is lost from a plant. Water is taken into a plant through roots and root hairs by osmosis‚ and it exits the plant through stomata. Transpiration helps the diffusion of both O2 and CO2 plus it helps the movement of water throughout the plant. There are some factors that affect the rate of transpiration of the plant. Those factors are mainly humidity‚ soil water supply‚ sunlight‚ temperature and wind. Any alteration
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BGY 2001 CONCEPT OF BIOLOGY Laboratory Report PRACTICAL 8 TRANSPIRATION Tittle: Transpiration Objectives: 1. To measure transpiration rates by using photometer. 2. To determine the factors that influences the rate of water loss from a plant through transpiration Introduction: Most of the water a plant absorbs is not used for a plant’s daily functioning. It is instead lost through transpiration‚ the evaporation of water through the leaf surface and stomata‚ and through guttation
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HYPOTHESIS 1: Plants transpire the most when the environment has light and less humidity JUSTIFICATION: Water evaporates more readily because light stimulates the opening of the stomata and photosynthesis would occur. HYPOTHESIS 2: Transpiration would occur the second most when there’s light and lots of humidity. JUSTIFICATION: The light would allow photosynthesis to occur and the stomata to open but little if any diffusion of water out the leaf would occur. HYPOTHESIS 3: Plants transpire
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with temperature since transpiration is a cooling mechanism to release heat. More stomata open as temperature increases as this allows a faster transpiration rate. Although‚ at much higher temperatures‚ plants close stomata to prevent excess water loss. b. The increasing humidity causes reduced transpiration rates. This is because atmosphere is saturated with water vapor and so not much can be absorbed by the plant as humidity increases. At 100 percent humidity‚ the plant cannot absorb any more
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Transpiration Formal Lab Report By Jessica Tran Introduction When water is transported from the roots to the mesophyll cells in the leaves‚ it is evaporates out the stomates‚ called transpiration‚ to create a lower osmotic potential. Osmotic potential is the part of the water potential of a tissue that results from the presence of solute particles. Even though the stomates open to release water‚ it also brings in carbon dioxide to produce sugar and oxygen through a process of photosynthesis
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Lab 3 Worksheet: Plant Transpiration Student instructions: Follow the step-by-step instructions for this exercise found on the worksheet below and in the virtual lab and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Please make sure that your answers are typed in RED. Please type your Name and Student ID Number here: Directions 1. Open the Virtual Lab titled “Plant Transpiration.” 2. Read the background
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TRANSPIRATION: Investigation 11 Learning Objectives: To investigate the relationship among leaf surface area‚ number of stomata‚ and the rate of transpiration To design and conduct an experiment to explore other factors‚ including different environmental variables‚ on the rate of transpiration To investigate the relationship between the structure of vascular tissues (xylem and phloem) and their functions in transporting water and nutrients in plants Before doing this laboratory you should understand:
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