Bio 110 Lab 1
b 1
Exercise 1:
Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since virtually every living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measure in units of ppm—or parts per million. Examine the data in Table 2 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below.
Table 2: Water quality vs. fish population
Dissolved Oxygen (ppm) |0 |2 |4 |6 |8 |10 |12 |14 |16 |18 | |Number of Fish Observed |0 |1 |3 |10 |12 |13 |15 |10 |12 |13 | |
1. Based on the information in Table 2, what patterns do you observe?
The more dissolved oxygen in the water, the more fish observed. Where there is 0 amount of dissolved oxygen present there are 0 fish being observed.
2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.
The more dissolved oxygen in an area of water, the more fish that will be observed.
3. What would your experimental approach be to test this hypothesis?
I would test the dissolved oxygen in several different areas of a lake and keep track of the fish in those areas and compare the results.
4. What are the independent and dependent variables?
Independent variables- Dissolved Oxygen
Dependent variables- Fish
5. What would be your control?
I would have no control of the dissolved oxygen or of the fish in the areas they choose to be in.
6. What type of graph would be appropriate for this data set? Why?
A line graph because it would show the fish population on the y axis and the dissolved oxygen is on the x axis and it would be clear to see what level of dissolved oxygen provides a
Exercise 1:
Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since virtually every living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measure in units of ppm—or parts per million. Examine the data in Table 2 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below.
Table 2: Water quality vs. fish population
Dissolved Oxygen (ppm) |0 |2 |4 |6 |8 |10 |12 |14 |16 |18 | |Number of Fish Observed |0 |1 |3 |10 |12 |13 |15 |10 |12 |13 | |
1. Based on the information in Table 2, what patterns do you observe?
The more dissolved oxygen in the water, the more fish observed. Where there is 0 amount of dissolved oxygen present there are 0 fish being observed.
2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.
The more dissolved oxygen in an area of water, the more fish that will be observed.
3. What would your experimental approach be to test this hypothesis?
I would test the dissolved oxygen in several different areas of a lake and keep track of the fish in those areas and compare the results.
4. What are the independent and dependent variables?
Independent variables- Dissolved Oxygen
Dependent variables- Fish
5. What would be your control?
I would have no control of the dissolved oxygen or of the fish in the areas they choose to be in.
6. What type of graph would be appropriate for this data set? Why?
A line graph because it would show the fish population on the y axis and the dissolved oxygen is on the x axis and it would be clear to see what level of dissolved oxygen provides a