What are the roles of carbon dioxide in photosynthesis

Variables: Independent variable: bicarbonate concentration

Dependent variable: number of disks floating after a minute

Control: amount of solution, size of leaf disks, amount of time cup is under light bulb, number of drops of liquid soap/ type of liquid soap The results suggest carbon dioxide concentration effects the rate of photosynthesis.

Photosynthesis uses carbon dioxide and water, ..

how does the concentration of carbon dioxide affect the rate of photosynthesis?

Effect of Dissolved Carbon Dioxide ;

The increase in the concentration of carbon dioxide, one of the three major to the has been carefully documented at the Mauna Loa Observatory in Hawaii. The 1990 rate of increase was about 0.4% per year. The interesting cyclic variations represent the reduction in carbon dioxide by photosynthesis during the growing season in the northern hemisphere.

How Carbon Dioxide Concentration Affects …

Current analysis suggests that the combustion of fossil fuels is a major contributer to the increase in the carbon dioxide concentration, such contributions being 2 to 5 times the effect of deforestation (Kraushaar & Ristinen).

What is the effect on the rate of photosynthesis of Spinach leaves when they are in an environment of different concentration of carbon dioxide?

carbon dioxide effect rate photosynthesis: ..

Only one part in 2597 of Earth's atmosphere is carbon dioxide. Yet, plants make themselves from it. A very substantial oak tree is made from what seems like a few insubstantial air molecules. Plants use photosynthesis to make themselves from water, carbon dioxide and energy from the Sun. Atmospheric oxygen is a byproduct of photosynthesis. Animals reverse photosynthesis. They eat plants or they eat animals that eat plants. Animal metabolism consumes oxygen and releases carbon dioxide and water. The net effect of all this is a constant movement of carbon between plants, animals and the atmosphere.

Carbon dioxide's effects on plants increase global …

The greenhouse effect refers to circumstances where the short wavelengths of light from the sun pass through a medium and are absorbed, but the longer wavelengths of the re-radiation from the are unable to pass through that medium. The trapping of the long wavelength radiation leads to more heating and a higher resultant temperature. Besides the heating of an automobile by sunlight through the windshield and the namesake example of heating the greenhouse by sunlight passing through sealed, transparent windows, the greenhouse effect has been widely used to describe the trapping of excess heat by the rising concentration of in the atmosphere. The carbon dioxidestrongly absorbs infrared and does not allow as much of it to escape into space.

As carbon dioxide concentration increases, the rate of photosynthesis increases

The History of Atmospheric Carbon Dioxide on Earth

So how can these factors have an effect on the rate of photosynthesis? Lets start off with the light intensity. When the light intensity is poor, there is a shortage of ATP and NADPH, as these are products from the light dependent reactions. Without these products the light independent reactions can't occur as glycerate 3-phosphate cannot be reduced. Therefore a shortage of these products will limit the rate of photosynthesis. When the carbon dioxide concentration is low, the amount of glycerate 3-phosphate produced is limited as carbon dioxide is needed for its production and therefore the rate of photosynthesis is affected. Finally, many enzymes are involved during the process of photosynthesis. At low temperatures these enzymes work slower. At high temperatures the enzymes no longer work effectively. This affects the rate of the reactions in the Calvin cycle and therefore the rate of photosynthesis will be affected.

20/07/1983 · Effects of carbon dioxide concentration on coral photosynthesis

Glossary of Terms: C - Physical Geography

Sometimes photosynthesis is limited by the concentration of carbon dioxide in the air. Even if there is plenty of light, a plant cannot photosynthesise if there is insufficient carbon dioxide.

Effect of carbon dioxide concentration on photosynthesis & respiration

IB Biology Notes - 8.2 Photosynthesis

Plants get carbon dioxide from the air through their leaves. The carbon dioxide diffuses through small holes in the underside of the leaf called stomata. (singular: stoma. plural: stomata)

The lower part of the leaf has loose-fitting cells, to allow carbon dioxide to reach the other cells in the leaf. This also allows the oxygen produced in photosynthesis to leave the leaf easily.




Carbon dioxide is present in the air we breathe, at very low concentrations. Even though it forms about .04% of the air, it is a needed factor in light-independent photosynthesis.

In higher concentrations, more carbon is incorporated into carbohydrate, therefore increasing the rate of photosynthesis in light-independent reactions.