The Arthropod Phylum

Introduction: Terrestrial isopods, also known as pill bugs, are comprised of a variety of different species and are known for their adaptability to different environments, which have certain wavelengths of light and sufficient water and nutrients to survive (Danielson et. al. 1976). They are usually found in moist, dark areas because they are extremely vulnerable to dehydration and need a sufficient amount of water to survive (Wagler et. al. 2013).

The compiled data was used to form population A of the experiment, while population B was predetermined and provided by the instructor. Research was conducted using primary sources and data collected in order to locate evidence supporting the hypotheses.

The purpose of this experiment was to test multiple brands of popcorn under the same setting in order to conclude which one statistically popped the most kernels. I tested the butter flavor of Orville Redenbacher, Wal-mart’s Great Value brand, and Pop Weavers. The different bags of popcorn were popped in the same microwave for the same amount of time, 3 minutes and 15 seconds. Then, the popped corn was counted, as well as the un-popped kernels, in order to determine a ratio, and then I recorded the results in the data table. I repeated these steps two more times for a total of 3 trails for each brand. Then I compared the ratios of all the bags to determine which brand yielded the most popped corn. The statistical technique used to evaluate the data was to find a ratio between the number of kernels in the bottom of the bowl and the number of popped kernels. To find this, I divided the number of the actual popped corns by the total number of kernels left in the bottom of the bowl. The ratios and percent were then compared. Once all my results were in the data table, I averaged the 3 trials for each brand of popcorn.

Purpose: The purpose of this experiment is to observe the pill bugs’ behaviors when introduced to a stimuli, a strong scent, and it is important to notice whether the pill bugs perform taxis or kinesis as a result of the stimuli. In addition, the purpose is to learn how to properly design an experiment is.

Pill bugs live in an outside environment where they are able to get the necessary amount of energy from organic matter. This environment is where water and organic matter is plentiful. In there natural habitat, pill bugs are found in dark, damp places. Living in moist places is important for pill bugs so they can take in enough water, and if water is not available, they group together to prevent water loss. Pill bugs most often live in dark places because they have a negative photo taxis. Darker places also tend to be cooler and damper. Each experiment connected to how the pill bugs would behave in a certain environment. We were able to test these experiments in a laboratory way to see if the natural environments were also true.

For the dark environment we cut out a sheet of black paper and taped it to the top of the observation chamber, for the light environment two flashlights were above the chamber. A funnel was used to put the bugs in the middle and keep them there until the timer was started. After thirty seconds when the pill bugs were released our group counted how many bugs were either in the neutral, dark, or light section of the observation chamber this is how the data was collected. This experiment had two trials, so the data, that was collected during both trials were averaged out. During the second experiment that was conducted the pill bugs were once again placed in the middle of the observation chamber with the funnel, but this time one section of the chamber had soil with three drops of water, while the other section of the chamber had soil with 3 drops of vinegar. Once thirty seconds had past after the bugs had been released each member of the group counted how many bugs were on each sections of the chamber. This experiment was done twice and then the data was averaged out the data. This method of collecting data was chosen because this was the simplest and most efficient way of collecting

The table below shows all the results from the experiment and even some extra information. The table displays the mean of the times the termites stayed on the pencil and papermate circles. It also displays the amount of trials used in the experiment.

This experiment was testing the alkalinity in the creek’s water to prove whether the creek was polluted or not. We were split into groups and then within each group we worked in groups of two

The experiment performed was Experiment IV: Fluid Flow Meters and Tray Hydraullics. The group was composed of Alex Long, Khanh Ho, Tricia Heitmann and myself. The first day of

The two groups exhibit differents behavior (fugure 1). Indeed, the control group, act appropriately on the maze. The Crayfish explored the maze in considerable amount of tio=me in order to exit out. Through repetitions, the time of completion of the T-maze decreased. On the other hand, the experimental group (serotonin injection) took longer to complete the maze. The time of completion of the T-maze increased after serotonin has been injected.

The scientific question of the project was, Does the size of a tire affect the bike’s speed? The hypothesis was , If the smaller tires were used, then the bike would go faster. The important procedures were: Make sure all equipment is ready. Test the standard wheel of 1 rotation or pedal a second to ride to the finish line. Test smaller and bigger wheels. Record data and have at least 3 trials. Record the data on a piece of paper and compare results to your hypothesis. The Independent variable is the size of the wheel on the bike. The Dependent variable is the standard wheel or tire on the bike. The control group was the bike’s speed and the standard wheel or tire. The Experimental group is the other tires or wheels being tested on the bike. The control variables were the rate of pedaling , the same bike model was used, and the same distance for

They used with an experimental control group and they compared it for over a period of 5 years. The observation they studied was to compare the effects on the experiment and compared the group of students using: “(a) descriptive statistics including means and standard deviations of direct observation data; (b) visual inspection of means for DIBELS subtests across first, second, and third grades; (c) ANOVA test for the slopes for NWF (first grade) and ORF (first-third grades); and (d) ANOVA tests for the WRMT.” (Wills, H.,

When conducting the experiment the results for each alcohol were where they were anticipated to be supporting the

The first experiment was Baseline and for that experiment we needed to get three tubes but one of the tubes were already done so the only thing was left is to do test tube two and three and put it together than put it in the spectrophotometer 20. The hypothesis for this experiment

Mentioned before is that they possess an exoskeleton. The exoskeleton is an amazing feature that gives shape and support to the body, as well as provides protection from enemies and minimizes injuries. An exoskeleton also decreases the loss of body fluids, and assures advantage to muscles for strength as well as agility in movement. It is able to resist physical and chemical attack. The exoskeleton of an arthropod can either be as flexible as rubber or as hard and rigid as some metals.