Rate of Photosynthesis Experiments: Analyzing the Relationship between Light Intensity and Photosynthesis

The video tutorial explains an experiment conducted to study the relationship between light intensity and the rate of photosynthesis in pondweed. The experiment setup involves placing pondweed in a boiling tube with a hydrogen carbonate solution and varying the distance of a light bulb to measure the number of bubbles produced. The results are recorded in a tally chart and graphed to show a non-linear trend. The analysis concludes that as light intensity decreases, the rate of photosynthesis also decreases, supporting the hypothesis.

What was the purpose of the beaker of water in Matt's experiment?

• To act as a heat shield

• To provide nutrients to the pondweed

• To increase the rate of photosynthesis

• To measure the temperature

How did Matt record the number of bubbles produced by the pondweed?

• With a stopwatch

• By making a tally chart

• Using a digital counter

• By taking photographs

What does the horizontal axis represent in the graph of Matt's experiment?

• The number of bubbles per minute

• The concentration of hydrogen carbonate

• The distance from the light source

• The temperature of the water

What type of trend was observed in the graph of the experiment results?

• No trend

• Exponential trend

• Curve trend

• Linear trend

What conclusion can be drawn about the relationship between light intensity and the rate of photosynthesis?

• As light intensity increases, the rate of photosynthesis decreases

• As light intensity decreases, the rate of photosynthesis increases

• As light intensity decreases, the rate of photosynthesis decreases

• Light intensity has no effect on the rate of photosynthesis