Wednesday, February 27, 2013

Factors Affecting Photosynthesis

FACTORS AFFECTING PHOTOSYNTHESIS
BY: Ella Seño-Icalla
1.Light Intensity
Low light transport lowers the invest of photosynthesis. As the intensity is increased the rate as well as increases. However, after reaching an intensity of 10,000 lux (lux is the unit for amount light intensity) there is no effect on the rate. very(prenominal)(prenominal) high intensity may, in fact, slow down the rate as it bleaches the chlorophyll. Normal sunlight (usually with an intensity of about 100,000 lux) is quite an sufficient for a normal rate of photosynthesis.

2. atomic number 6 Dioxide Concentration
Carbon dioxide ingress will directly affect the rate of photosynthesis as it is used in the photosynthesis chemical reaction.
In the atmosphere, the concentration of atomic number 6 dioxide ranges from .03 to .04 %. However, it is embed that 0.1% of carbon dioxide in the atmosphere increases the rate of photosynthesis significantly. This is achieved in the greenhouses which are enclosed chambers where plants are openhanded under controlled conditions. The concentration is increased by installing gas burners which liberate carbon dioxide as the gas burns. Crops like tomatoes, lettuce are successfully grown in the greenhouses. These greenhouse crops are found to be bigger and better-yielding than their counterparts growing in natural conditions.

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The following graph shows how incompatible concentrations affect the rate of photosynthesis.

3.Temperature
An optimum temperature ranging from 25oC to 35oC is required for a steady-going rate. At temperatures around 0oC the enzymes stop working and at very high temperatures the enzymes are denatured. Since both the stages of photosynthesis require enzyme activity, the temperature has an affect on the rate of photosynthesis.

4. Chlorophyll Concentration
The concentration of chlorophyll affects the rate of reaction as they absorb the light energy without which the reactions cannot proceed. Lack of chlorophyll or deficiency of chlorophyll results in chlorosis or yellowing of leaves. It can...If you want to get a full essay, order it on our website: Orderessay



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