High light intensities affect the rate of photosynthesis. Photosynthesis comes from the Greek words "light" and "putting together." – Using a light source, LDR and tracing paper to model absorption of gamma rays by … An increase in light intensity will produce an increase in the rate of photosynthesis until a level of light intensity is reached [normally 38% . Temperature of the water; Carbon dioxide concentration. biology - how light intensity affects the rate of photosynthesis 2109 Words | 9 Pages. H2O. Light is a limiting factor at low intensity. 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. Which is the best hypothesis for the scientific question "How does light intensity affect the rate of photosynthesis?" entry of CO 2. The photosynthetic rate is usually measured indirectly by detecting the amount of carbon dioxide released by plants. At low light intensities, if the light intensity is increased, the rate of photosynthesis increases. UCSBscienceline,. How does the level of light affect the rate of photosynthesis? Accessed October 19. More light will result in an increased rate of photosynthesis. Light is essential for photosynthesis. 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 … 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. ATP is the building block for plants in much the same way as DNA is for humans. 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). Whats people lookup in this blog: How Does Light Intensity Affect The Rate Of Photosynthesis Lab Report The graph shows that the distance from light intensity are increased when the rate of dye reduction decrease between 0.3m to 1.1m. 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. At low light intensity, photosynthesis occurs slowly because only a small quantity of ATP and NADPH is created by the light dependent reactions. This is because light excites chlorophyll molecules, providing the energy for the production of carbohydrates. During photosynthesis, plants absorb light energy and use it to make molecules of adenosine triphosphate (ATP). Green plant cells that are placed in the dark will not photosynthesis. UCSB. Light intensity is positively correlated with the rate of photosynthesis. – Light Intensity Effecting 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. This means that as light intensity increases, so does the rate of... See full answer below. The Effect Of Light Intensity On The Rate Of Photosynthesis 1919 Words | 8 Pages. HYPOTHESIS If the light intensity for a plant is low, then the rate of photosynthesis and number of bubbles would be lower. (Light intensity is proportional to 1/distance 2. Thus, this showed that the improved photosynthetic parameters enhanced the carbon gain and promoted the soybean growth ( Liao et al., 2005 ). A change of light intensity would result in a change of photosynthesis rate. – Investigating Human Power. 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. Light intensity has no effect on the rate of photosynthesis. Therefore, rate of transpiration increases. See answer 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. Light intensity or distance of the Elodea from the lamp. 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. The wavelength one is trickier. You will count the number of bubbles at each level. Answered How does decreasing light intensity affect rate of photosynthesis in vascular aquatic plants? However, at sufficiently high levels of light intensity, the rate … “How does the Level of Light Affect the Rate of Photosynthesis”. Thus the rate of photosynthesis increases with an increase in light intensity. The rate of photosynthesis would go up as you increased intensity. Normally the carbon dioxide concentration of 0.03 to 0.04 percent is sufficient for photosynthesis. In most cases, the more light the faster photosynthesis occurs. I.Question: How Does Light Intensity Affect the Rate of Photosynthesis Procedure: The purple slider can be used to change the light levels. This indicates that the rate of photosynthesis increases with light intensity. 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 The rate of transpiration can be affected by: light intensity, air movement, temperature and humidity. The timer in the square box can be used to measure 30 seconds. How does the intensity of light affect the rate of photosynthesis in an elodea plant? Research Question. How does decreasing light intensity affect the rate of photosynthesis in an elodea plant under a fixed period of 2 minutes? As light intensity increases, the photosynthetic rate increases until a point is reached where the rate begins to level off. Light Intensity:An increased light intensity leads to a high rate of photosynthesis and a low light intensity would mean low rate of photosynthesis. Concentration of CO 2: Higher carbon dioxide concentration increases the rate of photosynthesis. Biology - How Light Intensity Affects the Rate of Photosynthesis 2153 Words | 9 Pages. Control Room temperature ºC – Rate of Reaction Between Sodium Sulphate and Hydrochloric Acid. Biology Coursework! The stomata are closed. 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. 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. Which is required for the light-dependent reactions in photosynthesis to occur? It stops the . Background: The higher light intensity means that the rate of photosynthesis will increase Because more light is available to drive the reaction. 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. 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. Photosynthesis enables plant metabolism processes to take place and provides the energy that fuels these processes. Air movement and humidity are linked. Light intenstity is a factor which can limit the rate of photosynthesis. 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 Light intensity levels can have a significant effect on photosynthesis rates, which are directly related to a plant’s ability to grow. 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. Light intenstity is a factor which can limit the rate of photosynthesis. 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