Investigating the effect of light intensity on the rate of photosynthesis.

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Investigating the effect of light intensity on the rate of photosynthesis.

Aim:

We are going to investigate the effect of changing light intensity on the rate of photosynthesis on Eloden pondweed.

Factors affecting the rate of photosynthesis.

1. Heat-high temperatures can destroy enzymes.

   Very low temperatures slow enzymes down.

2. Light intensity- high light intensity increases photosynthesis.

3. Carbon dioxide-high levels increase rate of photosynthesis.

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Variables- things can change.

What will we measure?

  • The number of oxygen bubbles produced in a given time.
  • Variables- distance from the lamp, measure the temperature of the water, volume of water, length of the plant.

Range of five measurment, 5 repeats, average results.

Method.

The equipment I will need is: beaker, thermometer, glass rod cotton pondweed, boiling tube containing dilute hydrogen carbonate, lamp and a meter ruler. I will make it a fair test by having range of five measurements and 5 repeats. ...

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