Transpiration and Leaf Resistance By: Bernina Berber Introduction Transpiration is a part of the water cycle process‚ and it is the loss of water vapor from parts of the plants. It is a process similar to evaporation. Evaporation and diffusion cause the plant tissue to have negative water potential. If you were to compare transpiration it would be like saying it is close to sweating (but in plants)‚ especially in leaves but also in stems‚ flowers and roots. Stomata are dots with openings on
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Transpiration Abstract This lab demonstrates how different environments effect the rate of transpiration in plants. A potometer is set up and placed in four different environments: one simply at room temperature (the control)‚ one with a fan pointing toward it creating a gentle breeze‚ on with a floodlight on it and a beaker felled with water as a heat sink‚ and one where the leaves are misted then covered with a transparent plastic bag. It is imperative that the tubing doesn ’t have any bubbles
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Transpiration Lab Write-up. Introduction Transpiration is the evaporation of water from plants. It’s not simply a hazard of plant life but it’s the engine that pulls water from the roots to cool the leaf and supply photosynthesis. The concentration of water vapor in the atmosphere is lower than that in the leaf. Because of this difference‚ water vapor diffuses from the spaces of the leaf‚ through the stomata in the epidermis. Stomata are in the lower epidermis; the lower surface receives less
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AIMS The aim of this experiment was to investigate the effect of temperature rise on the rate of transpiration of a plant (hibiscus) by measuring the plant’s water uptake in a period of time. HYPOTHESIS Transpiration is the process by which plants loses water to the atmosphere from their leaves. Water in the plant is lost to the atmosphere by evaporation. Evaporation of water can occur at any temperature. In the presence of sunlight‚ water in the plants evaporates into the intercellular air
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An experiment proving transpiration in leaves Aim To see how different environmental conditions affect transpiration of a leaf and which side of the leaf transpires the most. Background Information Plants put down roots into the soil to draw water and nutrients up into the stems and leaves. Some of this water is returned to the air by transpiration (when combined with evaporation‚ the total process is known as evapotranspiration). Transpiration rates vary widely depending on weather conditions
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Transpiration Introduction: “Transpiration occurs when the water moves from the soil into plant roots‚ up through the stem and into the leaves. The water‚ warmed by the sun‚ turns into vapor (evaporates)‚ and passes out through thousands of tiny pores (stomata) mostly on the underside of the leaf surface. Leaf transpiration occurs through stomata. Transpiration uses about 90% of the water that enters the plant. The other ten percent is used in photosynthesis and cell growth” (Sunny Datko‚ 2012)
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Virtual Lab: Plant Transpiration Please complete questions below prior to attempting the lab report for this assignment. Table 1: Total Amount of Water (in mL) Transpired in One Hour Plant Type Normal Conditions (21oC) With Heater (27oC) With Fan (21oC) With Lamp (21oC) Arrowhead 3.6 6.6 7.5 4.0 Coleus 0.9 3.9 6.0 3.0 Devil’s Ivy 2.9 4.1 4.6 3.0 Dieffenbachia 4.1 6.0 7.7 3.9 English Ivy 1.8 3.2 5.1 2.1 Geranium 1.2 5.8 4.7 2.4 Rubber Plant 4.9 6.8 8.4 4.3 Weeping Plant 3.3 4.9 6.1
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Lab 4: Plant Transpiration Project By Shelby Hyde Lab 030 Date Due: March 12‚ 2013 The Effect of Wind on the Rate of Transpiration Introduction: Transpiration is the process through which water is evaporated from plants. This serves many purposes‚ including thermoregulation and the diffusion of CO2‚ but most importantly creates a water potential difference which causes the mass flow of water and nutrients from the roots to the leaves of the plant. Transpiration is accomplished through structures
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Nicolette Lindberg 11/30/12 IB Biology 2‚ Period 1 Transpiration Lab Background Information- Transpiration is the loss of water from a plant. Plants transpire water out of the stomata in their leaves at a different rate in every environment. The amount of transpiration is affected by the environment‚ how developed the plant is to not lose as much water‚ the surface area of the leaves‚ and how affected the plant is by its environment (Von Bargen). For this experiment‚ the plant we used was (Viola
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Biology Lab Report (F.4) * Objective: To study the transpiration of a leafy shoot using the bubble potometer * Materials and apparatus: * Bubble potometer * Leafy shoot * Scissors * Basin with water * A fan * Plumbing tape * Method: Normal Condition: 1. The bubble potometer was filled with water. 2. The stem of a leafy shoot was cut under water. 3. The bottom of the stem was wrapped by plumbing tape. 4. The stem was fitted onto the photometer
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