Introduction:
To fully understand the investigation, there are three main definitions to keep in mind. Thermal Niche is a development in which natural selection forms adaptation for an organism through temperature. Acclimation is the process for the organism to become accustomed to the climate change. Fitness is simply the survival of an organism, however, in the investigation, locomotion is more suited due to the focus on the affect temperature has on the organism’s performance. For this lab, the organism experimented on is a water flea, called Daphnia Magna. All of this matters and is important to know about because it is key to understand the background of the experiment beforehand. This investigation relates to past research based on the …show more content…
That is, beakers filled with different water temperatures (20°C, 25°C, 30°C, 35°C, 40°C), three different Daphnia Magna’s (per group), a dropper, a net, a timer, a microscope tray and a microscope. First, our group gathered our focal temperature water at 40°C and a Daphnia Magna as the equipment was set to collect its heart rate. We then placed the organism outside room temperature water into the 40°C water and allowed it acclimate for an interval of 30 seconds. When the time was met, we used the dropper to place the Daphnia Magna onto microscope tray with the net attached for support. Next, we examined the Daphnia Magna underneath the microscope for 10 seconds and collected its’ B.P.M. (blood pressure/minute). To do so, we calculated the heart beat count multiplied by 10 seconds. This process was repeated two more times, totaling it to 3 different trials, with different Daphnia Magna’s each time. At the end, the B.P.M.’s average was recorded and compared with the rest of the class who experimented with different temperatures as well. The independent variable (also known as explanatory variable) that we manipulated were the different temperatures of water being used. The dependent variable (also known as response variable) that we measured were the Daphnia Magna’s heart rate.
Results:
In this experiments trends or patterns, the B.P.M.’s were noted consistently different in each trial, however, a few inconsistencies …show more content…
We stated that as acclimation occurs, the colder water temperature would cause their heart rate to decrease, as the warmer temperature water caused the heart rate to increase. The data recorded defines these interpretations, stating that for our individual trials, the Daphnia Magna’s B.P.M. increased from 440, to 510, to 570 at 40°C. For the rest of the class involved, the group at 20°C, B.P.M. average was 297, the group at room temperature decreased to 281, and decreased again with the group at 30°C to 170, then rose to 338 at the group with 35°C, and increased again in our group of 40°C averaging at 507 B.P.M. The overall class data in our experiment may have not been fully supported due to something as common as miscalculation. Other possible errors may have been caused by an issue with the microscope, wrongful measurements, or the ages of Daphnia Magna’s could have impacted the experiment as
To fully understand the investigation, there are three main definitions to keep in mind. Thermal Niche is a development in which natural selection forms adaptation for an organism through temperature. Acclimation is the process for the organism to become accustomed to the climate change. Fitness is simply the survival of an organism, however, in the investigation, locomotion is more suited due to the focus on the affect temperature has on the organism’s performance. For this lab, the organism experimented on is a water flea, called Daphnia Magna. All of this matters and is important to know about because it is key to understand the background of the experiment beforehand. This investigation relates to past research based on the …show more content…
That is, beakers filled with different water temperatures (20°C, 25°C, 30°C, 35°C, 40°C), three different Daphnia Magna’s (per group), a dropper, a net, a timer, a microscope tray and a microscope. First, our group gathered our focal temperature water at 40°C and a Daphnia Magna as the equipment was set to collect its heart rate. We then placed the organism outside room temperature water into the 40°C water and allowed it acclimate for an interval of 30 seconds. When the time was met, we used the dropper to place the Daphnia Magna onto microscope tray with the net attached for support. Next, we examined the Daphnia Magna underneath the microscope for 10 seconds and collected its’ B.P.M. (blood pressure/minute). To do so, we calculated the heart beat count multiplied by 10 seconds. This process was repeated two more times, totaling it to 3 different trials, with different Daphnia Magna’s each time. At the end, the B.P.M.’s average was recorded and compared with the rest of the class who experimented with different temperatures as well. The independent variable (also known as explanatory variable) that we manipulated were the different temperatures of water being used. The dependent variable (also known as response variable) that we measured were the Daphnia Magna’s heart rate.
Results:
In this experiments trends or patterns, the B.P.M.’s were noted consistently different in each trial, however, a few inconsistencies …show more content…
We stated that as acclimation occurs, the colder water temperature would cause their heart rate to decrease, as the warmer temperature water caused the heart rate to increase. The data recorded defines these interpretations, stating that for our individual trials, the Daphnia Magna’s B.P.M. increased from 440, to 510, to 570 at 40°C. For the rest of the class involved, the group at 20°C, B.P.M. average was 297, the group at room temperature decreased to 281, and decreased again with the group at 30°C to 170, then rose to 338 at the group with 35°C, and increased again in our group of 40°C averaging at 507 B.P.M. The overall class data in our experiment may have not been fully supported due to something as common as miscalculation. Other possible errors may have been caused by an issue with the microscope, wrongful measurements, or the ages of Daphnia Magna’s could have impacted the experiment as