Paramecium movement assignment: Answer the following questions and hand in at the beginning of the next lab.
1. Describe how Paramecium moves in aquatic environments?
For the paramecium to move forward, its cilia beat on an angle, backward in unison. The paramecium moves by spiraling through the water. For the paramecium to move backward, the cilia beat forward on an angle at the same time. If the paramecium runs into a solid object, the cilia changes its direction and beats forward, which makes the paramecium go backward. The paramecium turns slightly and goes forward again. If it runs into the solid object again it will do the same thing until it can get past the object.
2. Describe the mechanism of movement in Paramecium based…show more content…
I observed that they were at rest for 100% of the time. There was no change in direction. The Paramecium speed was 0 compared to all the other solutions which were average.
The mechanisms of these changes are because of the different water chemistry of the solutions.
4. Based on your results discuss the effects of environment on type of motion in Parameci
The type of effect the dryl solution had on the motion of the paramecium was that they kept moving forward. They averaged an avoidance frequency of 1.6minutes, and they were moving at a pretty fast speed. The duration of the movement (forward) was 8.8 minutes out of the 10 minutes I was observing them.
The type of effect the barium solution had on the motion of the paramecium was that they didn’t move forward as much. They were still moving at a pretty fast speed. They had the same avoidance frequency of 1.6. The duration of the movement was 11.7 (I watched the paramecium for 15 minutes for this test because I forgot to start my timer at the beginning.)
The type of effect the sodium solution had on the motion of the paramecium was that they only moved forward for half the time, the other half of the time they were in a jerking motion and a paranoid motion as well. Their avoidance frequency was 4.8, which is much higher than the dryl solution and the barium solution. They were still moving at a pretty fast speed like the other solutions but they