H2O. The graph shows that the distance from light intensity are increased when the rate of dye reduction decrease between 0.3m to 1.1m. Light is an important factor in photosynthesis, “how does a decreased light intensity impact photosynthetic rate of Elodea” is an important contemporary ecological question to be considered. Control Room temperature ºC Question Date: 2014-11-03: Answer 1: In photosynthesis, the energy from the sun is used to turn carbon dioxide (CO 2) and water into sugar.Oxygen is a waste product. This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable. The effects of changes in light intensity on the rate of electron transport from photosystem II to artificial electron acceptor 2,6-Dichlorophenolindophenol in the light reactions of photosynthesis in Spinacia oleracea L. Maddie Gibson Group members: Addison Ely, Brooke Koebele, Elise Ziegenhorn BIOL 240 Dr. Loni Walker December 15, 2016 Thus the rate of photosynthesis increases with an increase in light intensity. Light Intensity:An increased light intensity leads to a high rate of photosynthesis and a low light intensity would mean low rate of photosynthesis. Research Question. Accessed October 19. – Rate of Reaction Between Sodium Sulphate and Hydrochloric Acid. Green plant cells that are placed in the dark will not photosynthesis. At low light intensities, if the light intensity is increased, the rate of photosynthesis increases. Increased light intensity will increase the rate of photosynthesis so more water is drawn into the leaves where photosynthesis primarily takes place and therefore the rate of transpiration is greater. Therefore, rate of transpiration increases. In this experiment, the light intensity is changed by changing the distance of the source of light closer or further away from the elodea, so theoretically, when the intensity becomes stronger due to the light source being closer to the Elodea, the rate of photosynthesis should increase and therefore the number of oxygen bubbles will increase too. (Light intensity is proportional to 1/distance 2. This means that as light intensity increases, so does the rate of... See full answer below. This is because it's limited by other factors, such as the level of carbon dioxide in the air. Whats people lookup in this blog: How Does Light Intensity Affect The Rate Of Photosynthesis Lab Report However, at sufficiently high levels of light intensity, the rate … That mean the rate of photosynthesis also decreases in this graph. The stomata are closed. Related posts: What are the Factors that affect Photosynthesis Short Notes on the Absorption and Action Spectrum in the Process of Photosynthesis Get complete information on Site for Photosynthesis Essay on the Light Raction […] Light intensity has no effect on the rate of photosynthesis. More light will result in an increased rate of photosynthesis. Light is essential for photosynthesis. Light intensity or distance of the Elodea from the lamp. The rate of photosynthesis increases at the lower intensities of light and decreases at its higher intensities. This is because light excites chlorophyll molecules, providing the energy for the production of carbohydrates. The reason that light intensity does affect the rate of photosynthesis is because as light, and therefore energy, falls on the chloroplasts in a leaf, it is trapped by the chlorophyll, which then makes the energy available for chemical reactions in the plant. You will count the number of bubbles at each level. Light is a limiting factor at low intensity. Light intensity levels can have a significant effect on photosynthesis rates, which are directly related to a plant’s ability to grow. UCSBscienceline,. NOT Light intensity has an impact on the rate of photosynthesis. – Height of Holly Leaves Affect Prickliness. Photosynthesis is driven by the energy in light. An increase in light intensity will produce an increase in the rate of photosynthesis until a level of light intensity is reached [normally 38% . How does decreasing light intensity affect the rate of photosynthesis in an elodea plant under a fixed period of 2 minutes? Light intensity The bulb will be kept at 5cm away from the test tube containing the Cabomba flower at all times Keeping the light intensity the same means it will have no additional effect on the rate of photosynthesis. The Effect Of Light Intensity On The Rate Of Photosynthesis 1919 Words | 8 Pages. Photosynthesis enables plant metabolism processes to take place and provides the energy that fuels these processes. – Light Intensity Effecting Rate of Photosynthesis. How does the level of light affect the rate of photosynthesis? Answered How does decreasing light intensity affect rate of photosynthesis in vascular aquatic plants? It stops the . Light intensity can affect plant metabolism rates. Light intensity has a very large effect on the rate of photosynthesis. The students can be allocated to investigate a particular factor that affects the rate of photosynthesis, or they can choose from this list, or they can develop their own ideas. In this study, the increase in light intensity led to enhance the net photosynthetic rate, stomatal conductance, intercellular carbon dioxide levels, and transpiration rate of soybean plants. V Does The Light Intensity Affect the Rate of Photosynthesis The Investigation In this experiment I will investigate the affect in which the light intensity will have on a plants photosynthesis process. High light intensities affect the rate of photosynthesis. – Investigating Human Power. – Using a light source, LDR and tracing paper to model absorption of gamma rays by … The timer in the square box can be used to measure 30 seconds. biology - how light intensity affects the rate of photosynthesis 2109 Words | 9 Pages. Concentration of CO 2: Higher carbon dioxide concentration increases the rate of photosynthesis. Light Intensity's Effect on Photosynthesis Aim : To find out how light intensity will affect the rate of photosynthesis in a piece of Canadian Pondweed. Light intenstity is a factor which can limit the rate of photosynthesis. Light intensity is positively correlated with the rate of photosynthesis. Prediction I predict that as the input variable, the light intensity increases (the light moved towards the plant) the outcome variable, the amount of oxygen, produced from photosynthesis will be larger. During photosynthesis, plants absorb light energy and use it to make molecules of adenosine triphosphate (ATP). However, at some point there's a limit that the rate of photosynthesis cannot increase above. Correct answers: 2 question: Which is the best hypothesis for the scientific question “How does light intensity affect the rate of photosynthesis?” Light intensity, CO2 concentration, and temperature are factors that determine the rate of photosynthesis. As light intensity increases, the photosynthetic rate increases until a point is reached where the rate begins to level off. The rate of transpiration can be affected by: light intensity, air movement, temperature and humidity. It increases the temperature of the leaves. Photosynthesis comes from the Greek words "light" and "putting together." Light Intensity 0 5 10 15 20 25 30 35 40 45 50 Number of bubbles (30 sec) 0 2 4 5 5 6 6 6 6 6 6 HYPOTHESIS If the light intensity for a plant is low, then the rate of photosynthesis and number of bubbles would be lower. Which is the best hypothesis for the scientific question "How does light intensity affect the rate of photosynthesis?" It affects it by the increase of light intensity it increases the rate of photosynthesis but after the light intensity reaches its certain level the plant reac… zzame1eStramarv zzame1eStramarv 11/30/2016 Biology High School +6 pts. Normally the carbon dioxide concentration of 0.03 to 0.04 percent is sufficient for photosynthesis. Light intenstity is a factor which can limit the rate of photosynthesis. At low light intensities, if the light intensity is increased, the rate of photosynthesis increases. entry of CO 2. Biology - How Light Intensity Affects the Rate of Photosynthesis 2153 Words | 9 Pages. ADVERTISEMENTS: When light intensity and other factors are favourable, the rate of photosyn­thesis is directly proportional to the duration of light. Biology Coursework ¡V Does The Light Intensity Affect the Rate of Photosynthesis The Investigation In this experiment I will investigate the affect in which the light intensity will have on a plants photosynthesis … ATP is the building block for plants in much the same way as DNA is for humans. The rate of photosynthesis would go up as you increased intensity. Gradually the rate falls of and at a certain light intensity the rate of photosynthesis stay constant (from point B to C on the graph). How does the intensity of light affect the rate of photosynthesis in an elodea plant? Temperature of the water; Carbon dioxide concentration. In most cases, the more light the faster photosynthesis occurs. Igcse 2 10 rate limiting factors in photosynthesis ms cooper what is the correct answer proprofs discuss the effect of diffe light intensities on rate effect of light intensity quality and concentration. “How does the Level of Light Affect the Rate of Photosynthesis”. Simple experiments carried out by scientists shows that the rate of photosynthesis is critically dependent upon variables such as temperature, pH and intensity of light. Here a rise in light intensity has no affect on the rate of photosynthesis as the other factors such as temperature and carbon dioxide become limiting. Biology Coursework! UCSB. This indicates that the rate of photosynthesis increases with light intensity. Air movement and humidity are linked. The maximum rate of dye reduction is 0.398 at 0.3m from the light and the minimum rate of dye reduction is 0.045 ate 1.1m from the light. As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. At low light intensity, photosynthesis occurs slowly because only a small quantity of ATP and NADPH is created by the light dependent reactions. The wavelength one is trickier. I.Question: How Does Light Intensity Affect the Rate of Photosynthesis Procedure: The purple slider can be used to change the light levels. The photosynthetic rate is usually measured indirectly by detecting the amount of carbon dioxide released by plants. Which is required for the light-dependent reactions in photosynthesis to occur? A change of light intensity would result in a change of photosynthesis rate. When intensity of light is high, the temperature is higher and hence transpiration increases which leads to closing up of stomata and thus the photosynthesis decreases. 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