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How does CO2 affect the rate of photosynthesis? | …

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.

Assemble the equipment needed to measure the rate of photosynthesis in elodea (water plant).3.

I think this because the plant may use up all of the carbon dioxide (Sodium hydro carbonate) and the plant can have as much light as it needs but if it does not have any carbon dioxide it will not be able to photosynthesise....

#41 Effect of Light intensity on the rate of Photosynthesis

Count bubbles of oxygen gas given off by elodea to determine the rate of photosynthesis.4.

They found that elevated CO2 increased rates of net photosynthesis in about 85% of the reported studies, while reducing stomatal conductances and rates of transpiration in approximately 75% of the cases analyzed.

More light can mean more photosynthesis. It doesn’t necessarily mean more though. When wethink of photosynthesis as a process, we can seethat there are at least three things that canlimit the process: light, water, and carbondioxide. More light won’t help if we don’thave enough water and carbon dioxide.

the rate of photosynthesis increases.

In this experiment we were told that we would be measuring the rate of photosynthesis.

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.

Farmers can use their knowledge of these limiting factors to increase crop growth in greenhouses. They may use artificial light so that photosynthesis can continue beyond daylight hours, or in a higher-than-normal light intensity. The use of paraffin lamps inside a greenhouse increases the rate of photosynthesis because the burning paraffin produces carbon dioxide, and heat too.

In practice, any one of these factors could limit the rate of photosynthesis.
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Does Temperature Affect the Rate of Photosynthesis in Elodea.



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
rate.

Factors affecting the rate of photosynthesis 3

As seen in the chart, these pigments favor the violet-blue light, so it can be deduced that plants under this light source will have a faster photosynthetic rate and green will prevent the process.
ruler
Spinacia oleracea (spinach)
fluorescent light bulbs (60-100watt) in blue, red, green, and regular colors.
water
baking soda
soap
paper towels (for clean up)
beakers for the solutions (500 mL is sufficient)
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Methodology: Procedure
Part I.
1.

# 43 Effect of Carbon Dioxide on the Rate of Photosynthesis

How does the color of the light source affect the rate of photosynthesis?
Background Cont.
Along with CO2 and water, in order for plants to photosynthesize, light is required.

Dioxide affect the rate of photosynthesis

This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthes...

How does the level of light affect the rate of photosynthesis?

However, the rate of photosynthesis will eventually reach a
maximum because there is not enough of one of the factors needed, one
of them becomes a limiting factors.

Designing an experiment to test the rate of photosynthesis

Variables: The variables that might affect the rate of photosynthesis in this experiment are: Temperature: When the temperature rises so does the rate of photosynthesis; this is because as the temperature around the plant rises the enzymes controlling photosynthesis inside the chloroplasts heat up and start moving around faster, the fast moving molecules collide with other fast moving enzymes causing them to react....

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