the effect of co2 on photosynthesis - Free download as Word Doc ..
Hypothesis: is a process by which green plants and
certain other organisms use the energy of light to convert carbon
dioxide and water into the simple sugar glucose.
Photosynthesis uses carbon dioxide and ..
Liquid carbon dioxide has become popular for many growers even though it is usually more expensive. The main advantages of using liquid CO2 include purity of product, no concerns about crop damage, nor heat or moisture production, better control of CO2 levels and the flexibility to introduce the CO2 within the plant canopy at any time. Pure CO2 is delivered in bulk by truck to the greenhouse. Special storage tanks rented from the supplier are required at every site (). The compressed CO2 is in a liquid state and must be vaporised through vaporiser units (). The distribution system for liquid CO2 in the greenhouse is simpler to design and install. Most growers use 18 mm black flexible polyvinyl chloride (PVC) tubing with holes punched at an appropriate spacing (). For a small operation the CO2 may be supplied in cylinders.
Conclusion: My investigation has shown me that the more the light, the
faster the rate of photosynthesis, my results don't show me a definite
conclusion because there are more factors that affect the rate of
photosynthesis like the amount of carbon dioxide in the atmosphere and
Carbon dioxide is needed for photosynthesis - …
Factors that affect photosynthesis
If a plant gets more light, carbon dioxide, water or a higher
temperature, then it might be able to photosynthesise at a faster
Carbon dioxide in photosynthesis
if the light is not bright enough to allow the plants to use the
carbon dioxide as quickly as it supplied, the light intensity would be
the limiting factor.
Plants get carbon dioxide from the air through their leaves
This allows for safe flue gas introduction into the greenhouse. The flue gases are extracted where the boiler connects to the stack. These units are designed to reduce the temperature and moisture impact on the greenhouse environment, and have monitoring systems that safe guard against flue gas introduction when the carbon monoxide (CO) level is higher than a set level (usually 610 ppm). The system is designed with a small capacity ventilator with low suction resulting in a fixed volume of the flue gases. A second ventilator is used to mix the flue gases with the greenhouse air and then the mixture is introduced throughout the greenhouse. This system provides the flexibility to introduce the CO2 low within the crop and allowing it to rise through the crop before exiting the vents. The delivery system must be designed to ensure even distribution throughout the greenhouse (). In order to increase efficiency and to provide CO2 during the day when there is no requirement for heat, a hot water heating system equipped with an insulated hot water storage tank is used. The size of the tank may vary from 30130 m3/ha of greenhouse. The heat generated by the boiler during the day is stored in the tank and is used at night as required (). Summer CO2 supplementation using flue gas can be achieved as long as the stored heat is used during the night. In some cases during the summer months the stored heat is not required as the outside night temperature remains higher than 22°C. In this situation CO2 application is limited.
# 43 Effect of Carbon Dioxide on the Rate of Photosynthesis
There are four things that are required by the plant before it can carry out photosynthesis, they are light, chlorophyll, carbon dioxide and water ....
The Effect of Carbon Dioxide Concentration On The …
Carbon dioxide can be obtained by burning carbon-based fuels such as natural gas, propane, and kerosene, or directly from tanks of pure CO2. Each source has potential advantages and disadvantages. When natural gas, propane or kerosene is burned, not only CO2 is produced, but also heat is generated that can supplement the normal heating system. However, incomplete combustion or contaminated fuels may cause plant damage. Most sources of natural gas and propane have sufficiently low levels of impurities, but notify your supplier of your intention to use the fuel for CO2 supplementation. Sulphur levels in the fuel should not exceed 0.02% by weight. Combustion of fuels also generates moisture. For natural gas it is estimated that about 1.4 kg of water vapour is generated for each m3 of gas burned. For propane the amount of moisture generated per kg of CO2 is slightly less than it is for natural gas.