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Investigate the factors that affect the rate of photosynthesis.

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  • Essay length: 2357 words
  • Submitted: 20/10/2003
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GCSE Green Plants as Organisms

The first 200 words of this essay...

Introduction

Photosynthesis is the chemical process, which takes place in every green plant to produce food in the form of glucose. Oxygen is also produced as waste.

I am going to investigate the factors that affect the rate of photosynthesis. The factor I have chosen to investigate is light intensity. Does varying degrees of light intensity affect the rate of photosynthesis in a green plant.

Canadian pondweed (Elodea) will be used for this experiment, as when placed in water it gives of bubbles of oxygen from the cut end. This factor makes it ideal for observing the amount of oxygen given off when placed under varied light intensities.

Aim

The aim of this experiment is to determine whether the intensity of light affects the rate of photosynthesis in plants.

Background Knowledge

Photosynthesis occurs only in the presence of light. It is a chemical process used to turn inorganic compounds, carbon dioxide and water into organic compounds, carbohydrates. Photosynthesis occurs in chloroplasts, which are tiny membrane-bound bodies containing the light-trapping pigment chlorophyll. The equation for photosynthesis is:

Stephanie Ellis

Aby

Chlorophyll

Carbon

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