Photosynthesis Investigation

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Photosynthesis Investigation

AIM: As part of my coursework my aim is to produce a detailed investigation showing you what affects photosynthesis and how fast a plant can photosynthesise. To do this I will place pondweed in a bottle and by using a lamp, I will move the light closer to the plant, and count how many bubbles the weed release after a certain amount of time.

INVESTIGATION: Photosynthesis is a method in which plants use to produce food. Plants do this by converting light energy to make food from carbon dioxide and water. Inside the leaf is a green substance called Chlorophyll. This Chlorophyll helps to trap the energy from the sunlight, where as the carbon dioxide is trapped through tiny hole in the leaf. The water is absorbed through the roots and up through the stem.

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The trapped sunlight helps the carbon dioxide and water react. This makes a sugar called glucose. It also makes a waste product called oxygen, which humans use to breathe.

The factors that will affect photosynthesis are darkness and this is why they don’t photosynthesis at night. At night thought the plants take in oxygen and then give at their carbon dioxide as a waste product.

FAIR TESTING: The variables in which I believe will affect my investigation are the following:

  • Light Shining through from other experiments.

This will affect my experiment because the extra light will cause the plant ...

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