Photosynthesis

769 WordsFeb 29, 20164 Pages
Name __________________________________________________ Date ___________________ Class ____________ Photosynthesis Virtual Labs Tutorial: http://www.harcourtschool.com/activity/science_up_close/512/deploy/interface.html Watch and listen to the tutorial found in the link above. Fill in the following answers as you watch. Stop and replay anything you don’t understand – this is a complicated topic! food 1. Plants use photosynthesis to make __________________ for the plant. 2. What do plants need in order to perform photosynthesis? Plants need light ( usually from the sun) in order to perform photosynthesis. 3. How is the plant able to obtain each “ingredient?” The plant obtains each ingredient from the air through open…show more content…
Based on your data, draw a conclusion regarding how light intensity affects the rate of photosynthesis. The shorter the distance of the light to the sample the manier the bubbles are produced each minute. The longer the distance of the light to the sample the lesser the bubbles are produced each minute. It means that the higher the light intensity the rate of photosynthesis is increasing, the lower the light intensity the rate of photosynthesis is decreasing. Virtual Lab #2 - http://www.kscience.co.uk/animations/photolab.swf In this lab, you will be experimenting with how different variables affect the rate of photosynthesis. 9. Set the thermometer to 25°C (Room Temperature) and the light intensity to 20. a. What were the bubbles per minute at this setting? ______ bpm 32 b. Now increase the CO2 available to the elodea. What were your bubbles per minute? ______ bpm 48 c. Based on your data, how does the amount of available CO2 affect the rate of photosynthesis? The amount of available Carbon Dioxide increased the rate of photosynthesis. 10. Keep your settings from 9c (25°C, light intensity of 20, increased CO2). 48 a. What were the bubbles per minute at this setting? ______ bpm 40 b. Now increase the temperature to 40°C. What were your bubbles per minute? ______ bpm c. Based on your data, how does an increase in temperature affect the rate of photosynthesis? It decreased or slowed the rate of
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