The rate of photosynthesis increases at the lower intensities of light and decreases at its higher intensities. High light intensities affect the rate of photosynthesis. – Rate of Reaction Between Sodium Sulphate and Hydrochloric Acid. I.Question: How Does Light Intensity Affect the Rate of Photosynthesis Procedure: The purple slider can be used to change the light levels. However, at sufficiently high levels of light intensity, the rate … The Effect Of Light Intensity On The Rate Of Photosynthesis 1919 Words | 8 Pages. Light is a limiting factor at low intensity. Light intenstity is a factor which can limit the rate of photosynthesis. 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:An increased light intensity leads to a high rate of photosynthesis and a low light intensity would mean low rate of photosynthesis. Light intensity is positively correlated with the rate of photosynthesis. HYPOTHESIS If the light intensity for a plant is low, then the rate of photosynthesis and number of bubbles would be lower. The photosynthetic rate is usually measured indirectly by detecting the amount of carbon dioxide released by plants. “How does the Level of Light Affect 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. H2O. ATP is the building block for plants in much the same way as DNA is for humans. This is because light excites chlorophyll molecules, providing the energy for the production of carbohydrates. The stomata are closed. More light will result in an increased rate of photosynthesis. How does the intensity of light affect the rate of photosynthesis in an elodea plant? It increases the temperature of the leaves. This is because it's limited by other factors, such as the level of carbon dioxide in the air. This indicates that the rate of photosynthesis increases with light intensity. 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. However, at some point there's a limit that the rate of photosynthesis cannot increase above. At low light intensities, if the light intensity is increased, the rate of photosynthesis increases. – Investigating Human Power. As light intensity increases, the photosynthetic rate increases until a point is reached where the rate begins to level off. 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 intensities, if the light intensity is increased, the rate of photosynthesis increases. UCSB. Answered How does decreasing light intensity affect rate of photosynthesis in vascular aquatic plants? Light intensity levels can have a significant effect on photosynthesis rates, which are directly related to a plant’s ability to grow. Green plant cells that are placed in the dark will not photosynthesis. 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 […] The rate of transpiration can be affected by: light intensity, air movement, temperature and humidity. 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. In most cases, the more light the faster photosynthesis occurs. It stops the . 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. – Using a light source, LDR and tracing paper to model absorption of gamma rays by … 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 has a very large effect on the rate of photosynthesis. Temperature of the water; Carbon dioxide concentration. 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. At low light intensity, photosynthesis occurs slowly because only a small quantity of ATP and NADPH is created by the light dependent reactions. (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 ). Light intensity or distance of the Elodea from the lamp. An increase in light intensity will produce an increase in the rate of photosynthesis until a level of light intensity is reached [normally 38% . The wavelength one is trickier. Normally the carbon dioxide concentration of 0.03 to 0.04 percent is sufficient for photosynthesis. During photosynthesis, plants absorb light energy and use it to make molecules of adenosine triphosphate (ATP). The graph shows that the distance from light intensity are increased when the rate of dye reduction decrease between 0.3m to 1.1m. biology - how light intensity affects the rate of photosynthesis 2109 Words | 9 Pages. ADVERTISEMENTS: When light intensity and other factors are favourable, the rate of photosyn­thesis is directly proportional to the duration of light. 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. A change of light intensity would result in a change of photosynthesis rate. 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. Which is the best hypothesis for the scientific question "How does light intensity affect the rate of photosynthesis?" Photosynthesis enables plant metabolism processes to take place and provides the energy that fuels these processes. – Light Intensity Effecting Rate of Photosynthesis. The timer in the square box can be used to measure 30 seconds. Thus the rate of photosynthesis increases with an increase in light intensity. 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