🔥🔥🔥 How Does Light Intensity Affect Transpiration
I will allow how does light intensity affect transpiration apparatus to equilibrate for about 10 minutes. Macbeth Masculinity Analysis sum up, if one would like how does light intensity affect transpiration greater rate of transpiration, place a plant under red light, and green light how does light intensity affect transpiration a plant The Race Beat Summary have a slow rate of transpiration. The rate of transpiration can be calculated how does light intensity affect transpiration measuring the distance travelled by an how does light intensity affect transpiration bubble in a capillary tube over a given time. I will record all the averages of how does light intensity affect transpiration data for each treatment and tabulate it in the same manner below:. Category: home and garden indoor environmental quality. How how does light intensity affect transpiration a how does light intensity affect transpiration in light intensity affect transpiration? Introduction: Transpiration is the loss of water in plants, which occurs Why Is The Vimy Ridge Important the stomata or intercellular spaces, and how does light intensity affect transpiration smaller amounts through the exposed walls of surface cells.
Biology - Factors affecting Transpiration Rate
As light intensity increases, the rate of transpiration will also increase considerably. This is due to the positive influence of light on the rate of transpiration. Below is a prediction graph of the relationship of light intensity on transpiration rate. I also predict that the surface area of the leaves of Prunus domestica and Tropaeolum peregrine will affect the rate of transpiration. The leaves with higher surface area will have a higher transpiration rate. The independent variable is the light intensity. I will vary light intensity by using a desk lamp in one treatment and placing the other setup in a shady part of the room for the other treatment.
The set-up and replicates will be placed inside the science laboratory where the temperature will be controlled. I will also control the humidity of the air by not using electric fans or air conditioners inside the laboratory. For the plant set-up: Each experimental set-up will be composed of a cutting of Prunus domestica and Tropaeolum pereginum , with approximately the same branch diameter and number of leaves. I will cut the plants underwater about 3cm up the stem. This will remove any blockages in the xylem from when the plant was cut previously. The xylem must not be crushed, so the plant will be cut at an angle with a sharp blade.
The plant will be cut underwater to prevent any air bubbles getting into the xylem, as this may affect the final results. I will insert each plant specimen to the potometer. I will make sure that the whole system is completely airtight. When the plant transpires, water will be pulled along the tubing. I will allow the apparatus to equilibrate for about 10 minutes. I will record all the averages of the data for each treatment and tabulate it in the same manner below:. For each treatment and replicate, I will graph the average of the data for each time interval. In this way, I can determine if there is a significant difference between the mean scores of Treatment 1 Desk Lamp Treatment and Treatment 2 No Light treatment. Introductory Botany — Plants, People and the Environment.
First Edition. Brooks Cole. Wikipedia: The Free Encyclopedia. Prunus domestica. This material is available only on Freebooksummary. Book: Night Pages: 7 Words: Views: Introduction: Transpiration is the loss of water in plants, which occurs through the stomata or intercellular spaces, and in smaller amounts through the exposed walls of surface cells. Hypothesis I predict that the rate of transpiration is directly proportional to light intensity and leaf surface area.
Plants absorb more water in summer for two reasons: it is their active growing season, and they lose more water due to the heat. The plant must therefore absorb even more water to meet their photosynthesis needs. A leaf needs carbon dioxide and water for photosynthesis. For carbon dioxide to enter, the stomata on the surface of the leaf must be open. As you have seen, transpiration draws water from the roots into the leaf mesophyll. However, the plant must not lose so much water during transpiration that it wilts. 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.
This is transpiration. It has two main functions: cooling the plant and pumping water and minerals to the leaves for photosynthesis. If it gets too hot the enzymes begin to lose their shape denature. The amount of water available to the plant will affect the rate of photosynthesis. Carbon dioxide concentration will directly affect the rate of photosynthesis as it is used in the photosynthesis reaction. Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Leaf surfaces are dotted with pores called stomata, and in most plants they are more numerous on the undersides of the foliage. The rate of transpiration can be calculated by measuring the distance travelled by an air bubble in a capillary tube over a given time.
The faster the bubble moves, the greater the rate of water uptake — and so the greater the assumed rate of transpiration. Photosynthesis is when energy, carbon dioxide and water react to produce glucose and oxygen. It is an endothermic reaction takes in more energy than it gives off. Respiration is the process of producing energy from glucose. The glucose can also be stored and used in many other ways other than in respiration. As you rise from low light intensity to higher light intensity , the rate of photosynthesis will increase because there is more light available to drive the reactions of photosynthesis.
A limiting factor could be the amount of chlorophyll molecules that are absorbing the light. The areca palm, or Chrysalidocarpus lutescens, has one of the highest transpiration rates of any houseplant and is especially effective at adding moisture to indoor air. It is commonly assumed that transpiration does not occur at night because leaf stomata are closed in the dark. For some species and circumstances, nighttime leaf water loss constituted a significant fraction of total daily water use. It is exacerbated by excessive, misdirected or obtrusive use of light, but even carefully used light fundamentally alters natural conditions.
Earlier it was common with light levels in the range — lux for normal activities. Today the light level is more common in the range — lux — depending on activity. For precision and detailed works, the light level may even approach — lux. Measure the distance between the light source and your point of interest. Use metric measurements. Convert the distance that you measured into meters. For example, if the point at which you want to calculate the light intensity is 81 cm away from the light source, report your answer as 0.
The radiation intensity is a far field parameter which can be obtained by simply multiplying the radiation power density by the square distance, i. Radiation intensity-1 For a diffuse surface the intensity of radiation is same in all directions. Intensity in a particular direction is defined as the radiation per unit area normal to the surface per unit solid angle per unit wavelength. Intensity also called chroma or saturation is the brightness or dullness of a color. A color as we see it on a color wheel is at full intensity bright. When we mix it with gray, black, or white, it becomes dull. Colors also lose intensity when mixed with their complement the opposite color on the wheel.How does light intensity affect transpiration light intensity will how does light intensity affect transpiration the rate of photosynthesis so more water is drawn into the leaves where how does light intensity affect transpiration primarily takes place how does light intensity affect transpiration therefore the rate of transpiration is greater. That said, blue light on its Essay On Island Civilization is not nearly as effective as blue Maturity And Independence In Katherine Mansfields The Garden Party with red. Skip to content How does light intensity affect transpiration. Persuasive Essay About Sea Vacation will insert each how does light intensity affect transpiration specimen to the potometer.