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Oxygen that is produced in photosynthesis is given off as a gas.

in ����
You will also do an absorption spectrum of the photosynthetic pigments extracted
from Elodea and determine if there is a correlation between the rates of photosynthesis
under the different colored bulbs, the wavelengths of light that those filters transmit, and
the optimum wavelengths of light absorbed by the plant.
Biol 171L – FA15 Effect of Light Color on Photosynthesis 7-5
EXPERIMENT PROCEDURE
Overview
You will work in groups, as directed by your TA, and each group will take one part of the
experiment.

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

It is evident from these absorption and output plots that only the red and blue ends of the part of the are used by plants in photosynthesis. The reflection and transmission of the middle of the spectrum gives the leaves their green visual color.

Photosynthesis is the procedure all plants go through to make food.

An extremely important by product of photosynthesis is oxygen, on which most organisms depend.

Prediction: I predict that the oxygen bubbles will decrease when the lamp is further away from the measuring cylinder, because light intensity is a factor of photosynthesis.

Nutrients are food for algae, and water with highamounts of nutrients can produce algae in large quantities. When these algaedie, bacteria decompose them, and use up oxygen. This process is called . DO concentrations can drop too low for fish to breathe,leading to fish kills. However, nutrients can also lead to increased plantgrowth. This can lead to high DO concentrations during the day asphotosynthesis occurs, and low DO concentrations during the night whenphotosynthesis stops and plants and animals use the oxygen duringrespiration. For an example of how DO can vary from day to night, select .

Photosynthesis is the procedure all plants go through to make food.



The purpose of adding sodium bicarbonate powder to the water increases the
amount of carbon dioxide in the water.

This investigation can be performed with water plants grown in many parts of
the world, except regions that have permanent ice.


Determine the rate of photosynthesis of a plant, as measured by oxygen production.
Relevant Readings
• Campbell Biology, Chapter 10, especially pp.

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The Effect of Oxygen Concentration on Photosynthesis …

Four things are needed to make this process work and this gives two thing: the four things needed are light from the sun, carbon dioxide diffuses from the air, water from the soil and chlorophyll in the leaves....

Effect of Light Intensity on the Rate of Photosynthesis ..

Four things are needed to make this process work and this gives two thing: the four things needed are light from the sun, carbon dioxide diffuses from the air, water from the soil and chlorophyll in the leaves....

Effect of Light on Photosynthesis with an Oxygen Sensor …



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.

Effect of Oxygen on Photosynthesis, Photorespiration …

However,
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.

What is the effect of photosynthesis upon the Earth?

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 Light on Photosynthesis :: Papers

Directly downstream from where sewageeffluent is discharged to a river, DO content often decreases, because ofthe increase in growth rate of bacteria that consume the organic mattercontained in the effluent. The degree and extent of the DO "sag"depends on the Biological Oxygen Demand (BOD) of the effluent (how muchoxygen the effluent can consume) (Giller and Malmqvist, 1998).

The Effect of Light on 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 ....

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