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'''Setup''' | '''Setup''' | ||
I prepared six | I prepared six different vessels: | ||
*Tube 1 - unchanged Euglena medium; hard cheese | *Tube 1 - unchanged Euglena medium; hard cheese | ||
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*Erlenmeyer flask - few amount of microorganisms; significantly more Euglena than Paramecia | *Erlenmeyer flask - few amount of microorganisms; significantly more Euglena than Paramecia | ||
*Beaker glass - few amount of microorganisms; significantly more Euglena than Paramecia | *Beaker glass - few amount of microorganisms; significantly more Euglena than Paramecia | ||
''Day 15'' - checking the vessels: | |||
*Tube 1 - very high amount of Euglena; fast movement | |||
*Tube 2 - high amount of Euglena; fast movement | |||
*Tube 3 - few amount of Euglena | |||
*Tube 4 - high amount of Euglena (I never shaked the before taking a specimen because it has no cover. This time I stired it gently. That showed me that the highest concentration of organisms is on the bottom of the tube. Probably because the cheese always sinks.) | |||
*Erlenmeyer flask - few amount of Euglena | |||
*Beaker glass - amount of Euglena is significantly growing; only a few Paramecia | |||
Note: | |||
The concentration of Euglena is already visible. | |||
Tube 1: The cheese seems to be magnetic. The area around the cheese is dark green, the medium around it is light green. As soon as I shake it the whole medium in the whole tube becomes light green | |||
Tube 2: This tube only includes liqid fertilizer. There is no clear concentration point. The medium on the bottom is stronger then on the top. | |||
Tube 4: I never shaked this tube before taking a specimen because it has no cover. This time I stired it gently. Compared to the other times I observed it under the microscope, the amount of Euglena was significantly higher. That showed me that the highest concentration of organisms must be on the bottom of the tube. Probably because the cheese always sinks. | |||
Also: Whenever I take a specimen, put it on the specimen slide an wait a few minutes, the Euglena start to pile on the fringes of the medium. The middle turns into an an empty space. | |||
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