Elodea: Temperature and Degrees Celsius

Topics: Temperature, Carbon dioxide, Photosynthesis Pages: 4 (876 words) Published: October 30, 2013


Elodea, also known as Elodea Canadensis, or waterweeds, lives favorably underwater. You can find Elodea mainly in natural waters in North America such as ponds, rivers, or lakes. Elodea has expanded all over the world as well, particularly in Europe. This aquatic plant multiplies rapidly and grows in a variety of conditions and environments, which is why it’s considered a weed. Elodea is often used in aquariums to stabilize the oxygen balance. It’s a fierce photosynthetic which makes it easy to measure the changes in carbon dioxide. In this experiment, the effects of photosynthesis and respiration of Elodea caused by different temperatures were studied. We used three different temperatures, room temp, cold, and warm in three containers with elodea submerged in water saturated with CO2 in order to see the increase or decrease in photosynthesis and respiration over a period of sixty minutes. We also had one beaker with water saturated with CO2 with no elodea as our control. Weight of Elodea and amount of water saturated with CO2 were measured in the experiment as well to ensure accuracy. After the period of sixty minutes we added drops of NaOH to equal the amount of carbonic acid with CO2. The results demonstrated there was a great decrease in CO2 produced rather than the elodea submerged in warm and room temperature water.


Elodea often gets confused with many plants. Algae often get confused with elodea because of the similarities of their appearances. Elodea is an aquatic macrophyte; they are essential to the balance of these habitats like ponds or rivers because they produce oxygen that is released to the water (Siena, 2011). Many things like fish or decaying vegetation produce carbon dioxide in these streams or rivers. Other plants can cause the growth to decrease because of the competition for CO2 (Asta, 2011). Elodea can survive in many different temperatures which is the purpose of this experiment to determine if the...

References: D. K. Pandey, L. M. S. Palni, S. C. Joshi. 2003. Weed Science Vol. 51, Issue 2.P. 191-201.
Siena, A 2011. Elodea: Algae? No! Aquatic plant! Elodea: Algae? No! Aquatic Plant! Retrieved September 28, 2013, from http://www.ead.hemocentro.fmrp.usp.br/english/index.php/publication/science-in-focus/210-elodea-algae-no-aquatic-plant-
Asta, J. 2011, August 13. Rate of Growth of Elodea | eHow. EHow. Retrieved September 28, 2013, from http://www.ehow.com/info_10061234_rate-growth-elodea.html
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