Unformatted text preview: Animal Behavior Inquiry: Objective: Use inquiry skills to identify and study invertebrate behaviors. Use the CER process to present and explain your results. Background Invertebrates are a broad grouping of animals that lack vertebrate, or backbones. These organisms provide many essential roles in nature, ranging from decomposers to parasites to essential pollinators. Many of these invertebrates have simple neural systems that allow them to respond to changes in their environment. These environmental changes cause behavioral changes, sometimes resulting in behaviors that increase the invertebrates’ exposure to the stimulus and sometimes reducing their exposure to the stimulus. Ethology is the study of animal behavior. Many behaviors involve movement of the animal within its environment. In this exercise, you will investigate some innate behaviors (instincts) of invertebrates. The invertebrates you will be studying respond and move to different stimuli such as light and moisture. Orientation is a process by which animals position themselves with respect to spatial features of their environments. Taxis involves the turning of an animal's body relative to a stimulus - either toward or away. Kinesis is a random (non-directional) movement of an animal in relation to a stimulus, like cockroaches scattering when the light is turned on. Preparing for Experimentation Develop a testing area that will allow you to test your hypothesis. Clear Tupperware, cups, plastic containers, choice chambers, and Petri dishes all make excellent arenas for experimentation. You may choose to test your hypothesis in a more natural setting, but realize it will be harder to control many of the variables. Questions for potential experiments include: Animal Behavior Inquiry Tracker: 1. After reading the background, what other information do you need? Where will you find this information? What other types of invertebrates are there? This information can be found in the internet. 2. Compare and Contrast taxis and kinesis. They are both types of movement. Kinesis in an undirected type of movement meanwhile Taxis is a directed type of movement. 3. Observe the invertebrates in a natural setting for 5 to 7 minutes. What patterns or behaviors do you notice? Both ends move but one moves more than the other. Moves quicker on slippery surface. Leaves a watery/slimy trace. Likes the dark. Searches for cover. Does not like being in the light. Stretches so long that it helps him move faster. Both of his muscles help him shrink when feeling threatened. 4. From these observations, what assumptions can you make about invertebrate ethology? What causes invertebrates to move or react? Temperature and light. 5. Choose one of your assumptions that you would like to study more deeply. Generate a hypothesis that addresses one independent variable and one dependent variable. Hypothesis: The temperature of the surface will cause the worm to move differently. Independent Variable: Temp. Dependent Variable: Type of movement and how long it takes them to move. 6. Determine the type of data you will need to collect in order to study this ethological phenomenon. a. Quantitative: W
hich direction it moves. b. Qualitative: How much it moves. Create a system for collecting this data. It may be a data table, chart, pictograph, or picture. A data table. 7. Design an experiment that will allow you to collect the data you will need to analyze your invertebrate behaviors. Your experiment will need to clearly and simply study only your independent variable. You will also need a very clear and simple process to collect data for your dependent variable. 8. Answer the following questions before moving on: a. Will my design answer the question? Yes it will answer the question. b. Have I considered all of the variables? Yes I have considered all of the variables. c. How will I record and analyze my data? Use a ruler to see how much it moves while recording the information in the data table. Once this procedure has been approved by Mr. H, then run your test. Distance Direction Temp. TIme -9 cm from origin Left Cold side 40°C 2 minutes 42 seconds 6 cm from origin Right side warm 100°C side 1 minute 37 seconds -8.3 cm from origin 43 seconds Left side 40C or 100°C 9. Analyze your data. How can you make your data tell a story? What forms might you convert it into to make better sense? Do you need to make a graph? A pictograph? A drawing? Use the graph choice graphic to help you decide the best way to present your data. 10. Generate a conclusion to your hypothesis. Does your data support your initial assumption and respective hypothesis? Follow the CER format (Claim, Evidence, Reasoning). Make sure your reasoning does not include assumptions, but is based entirely on observations and collected data. The conclusion should identify key details and be supported by your data. Make sure to give some of the background of the lab to start with. CER-Evidence/Claim Organizer Guiding Question: What temperature does a worm prefer to be in? What we tested: We compared: we compared the effects of different temperatures has on a
preference. We changed (independent variable) Temperature We measured (dependent variable) The distance and time a worm moved
preferable temperature. Evidence 1: I observed that when we changed the temperature of the worm, the worm while to decide it's preferable temperature. Evidence 2: I also observed that when we changed the temperature to a colder tempera started to move slowly to warmer side. Evidence 3: A trend in the data is that the worm always moved to the cold side but then
to move to the warm side to get warm. Claim: The Temperature that the worm prefer was cold temperature. My CER Claim: Invertebrates prefer colder temperatures. Evidence: -The invertebrate moved to the colder side of the container in 2 minutes and 42 seconds. -The interverte moved to the cooler side faster the third time than the first time, both times the invertebrates choose the cooler side. Reasoning: Invertebrates prefer to be in cooler temperatures. Our data shows that the invertebrate choose to move to the side with a cooler temperature getting there in 43 seconds, while moving to the warmer side in 1 minute and 37 seconds. This shows that invertebrates prefer to be in colder temperatures. Critique: 1. What do you notice about the claim? Using the CER rubric, how would you rate this claim? I notice that the claim answers the question completely. I would rate his claim with a 4. 2. What do you notice about the data? What other data would you want to see to have it tell a better story? Using the CER rubric, how would you rate this evidence? I notice that the data has time, temperature and a distance factor. I would’ve liked if they had tried more times to get a better average. I would rate this evidence a 3. 3. What do you notice about the reasoning? How well does the reasoning connect the evidence to the claim? Using the CER rubric, how would you rate this reasoning? I notice that the reasoning is good but it lacks details. I would rate it a 3. ...
View Full Document
- Fall '17
- Rachel Cooper