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to investigate the effect of light intensity on the rate of photosynthesis
Member rating: No Rating | Words: 778 | Submitted: Tue Nov 13 2007
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Biology lab report 16 Mohd Hafeez Bin Azman M03K Title: to investigate the effect of light intensity on the rate of photosynthesis Research question: Does light intensity affect the rate of photosynthesis? Hypothesis: Theoretically plants need light to undergo photosynthesis. At low light intensities, there is a shortage of the product of the light-dependent reactions. There fore if the light intensity is low, the rate of reaction will also be low. The hypothesis is that the rate of photosynthesis increases with the increasing light intensity and decrease with the decreasing light intensity. Variables: Independent --> distance between the source of light and the pond weed Dependent --> time taken for the colour of sodium bicarbonate solution to turn from deep red to purple Fixed --> the apparatus settings, the volume of sodium bicarbonate Solution (5 cc), the length of pond weed(5 cm) Apparatus: 7 boiling tubes, 7 rubber stopper, 1 black paper, capillary tube, lamp Materials: Pond weed, fresh sodium bicarbonate indicator Method: 1. CO2 was blown into some...
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