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When light shines on pondweed, Elodea sp, bubbles of gas are released. The rate at which bubbles of gas are produced can be used to measure the rate of photosynthesis. An investigation was carried out to study the effect of different colours of light on the rate of photosynthesis in the pondweed. The apparatus was set up as shown in the diagram below. The pondweed was exposed to one colour of light and left for 5 minutes before measurements were taken. • The time taken for the release of 20 bubbles were recorded. The procedure was repeated using light of different colours but of equal intensity. Bubbles Water Pond weed

When light shines on pondweed, Elodea sp, bubbles of gas are released. The rate at which bubbles of gas are produced can be used to measure the rate of photosynthesis. An investigation was carried out to study the effect of different colours of light on the rate of photosynthesis in the pondweed. The apparatus was set up as shown in the diagram below. The pondweed was exposed to one colour of light and left for 5 minutes before measurements were taken. • The time taken for the release of 20 bubbles were recorded. The procedure was repeated using light of different colours but of equal intensity. Bubbles Water Pond weed

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Name the 2 controlled variable
When light shines on pondweed, Elodea sp, bubbles of gas are released. The rate at which bubbles of gas are produced can be used to measure the rate of photosynthesis. An investigation was carried out to study the effect of different colours of light on the rate of photosynthesis in the pondweed. The apparatus was set up as shown in the diagram below. The pondweed was exposed to one colour of light and left for 5 minutes before measurements were taken. The time taken for the release of 20 bubbles were recorded. The procedure was repeated using light of different colours but of equal intensity. Bubbles Water Pond weed Independent The results are given in the table below. Colour of light dependant Time (in seconds) for 20 bubbles to form Violet 80 Green 40 Blue 160 Red 140 Yellow 70 1.1 Provide the aim for this investigation. 1.2 Provide a hypothesis for this investigation. 1.3 Name the dependent variable 1.4 Name the independent variable 1.5 Name two controlled/ fixed variables. 1.6 Name two ways how the above investigation could be made more reliable. 1.7 Name two ways how the above investigation could be made more valid. 1.8 Provide a conclusion for the above investigation. 1.9 Oraw a bar cranh of the results shoun in the table
Transcribed Image Text:When light shines on pondweed, Elodea sp, bubbles of gas are released. The rate at which bubbles of gas are produced can be used to measure the rate of photosynthesis. An investigation was carried out to study the effect of different colours of light on the rate of photosynthesis in the pondweed. The apparatus was set up as shown in the diagram below. The pondweed was exposed to one colour of light and left for 5 minutes before measurements were taken. The time taken for the release of 20 bubbles were recorded. The procedure was repeated using light of different colours but of equal intensity. Bubbles Water Pond weed Independent The results are given in the table below. Colour of light dependant Time (in seconds) for 20 bubbles to form Violet 80 Green 40 Blue 160 Red 140 Yellow 70 1.1 Provide the aim for this investigation. 1.2 Provide a hypothesis for this investigation. 1.3 Name the dependent variable 1.4 Name the independent variable 1.5 Name two controlled/ fixed variables. 1.6 Name two ways how the above investigation could be made more reliable. 1.7 Name two ways how the above investigation could be made more valid. 1.8 Provide a conclusion for the above investigation. 1.9 Oraw a bar cranh of the results shoun in the table
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