Light and Photosynthesis Essay

1269 Words 6 Pages
Introduction.
Light is a very important factor in the rate of photosynthesis, in my project I am going to test that plants do need light in order to photosynthesise. It will be very interesting to see how light will influence the rate of photosynthesis in plants and what will happen if they do not get the required light in order to produce starch .
The plant I have chosen to do is a Geranium which is a dicotyledonous plant found in the dry and hot regions of South Africa.

Aim
To see whether light effects the rate of Photosynthesis in plants or not.

Research Hypothesis.
Photosynthesis will occur at a faster rate when the plant is exposed to the sun, than when it is not exposed to sunlight.
I chose to test the effect light has on plants
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Using the ATP and NADPH produced by the light-dependent reactions, the resulting compounds are then reduced and removed to form glucose. http://biology.clc.uc.edu/courses/bio104/photosyn.htm Article 2:
Effects of light.
Light initiates the opening of the stomata, which results in carbon dioxide being absorbed for photosynthesis during the light-dependant phase, during this the rate of photosynthesis will increase. Brighter light means an increase in photosynthesis At low light intensities, as light intensity increases, the rate of the light-dependent reaction, and therefore photosynthesis generally, increases. http://www.rsc.org/learn-chemistry/content/filerepository/CMP/00/001/068/Rate%20of%20photosynthesis%20limiting%20factors.pdf Article 3:
Geraniums.
Geraniums are dicotyledonous plants that are found in the hot and dry regions of South Africa. They belong to the Geraniaceae family and the Plantae kingdom. The long leaves are round in shape. The flowers have five petals and are coloured white, pink, purple or blue. Geraniums will grow in any soil as long as it is not waterlogged. Reproduction is by semiripe cuttings in summer, by seed, or by division in autumn or spring. Geraniums are eaten by the larvae of some species including brown-tail and mouse moth. They are normally grown in part shade to full sun, in well-draining but moisture permeable soils, rich in humus. Scientists from Germany have found that the South African geranium plant

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