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Bugs and Beetles: Light. Day 11: May 16 th , 2013. Objectives:. I can identify and describe terrestrial environments and the effects of environmental factors on organisms. Focus Question:. How do isopods and beetles respond to different amounts of light?. Fill Me In….
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Bugs and Beetles:Light Day 11: May 16th, 2013
Objectives: • I can identify and describe terrestrial environments and the effects of environmental factors on organisms. Focus Question: • How do isopods and beetles respond to different amounts of light?
Fill Me In… • Since I have not been here for you investigations of isopods and beetles, please tell me a little about what you have learned. • What are isopods? • What are darkling beetles? • What types of moisture do isopods and beetles prefer?
Testing Light • Yesterday you set up an experiment for testing light to see if isopods and beetles prefer light or dark environments. • Let’s review what you did…
Testing Light Materials • 6 animal runways (which have already been prepared). • Dry soil (for the beetles) • Moist soil (for the isopods) • 9 isopods • 9 beetles
Testing Light Procedures • Set out six of the animals runways (which have already been prepared). • In three runways, place dry soil for the beetles. • In three runways, place moist soil for the isopods. • Cover all of the runway with a black piece of construction paper (only cover one half of the runway). • Place three beetles in the center of 3 of the runways (3 beetles per runway) • Place 3 isopods in the other three runways (3 isopods per runway). • Allow the isopods and beetles 5 minutes to explore. • Record where the isopods and beetles end up after 5 minutes. • Allow the isopods and beetles time to explorer overnight. • We will record the long run results tomorrow at the beginning of class.
Long Run Observation • Head back over to the tables. • Here we will observe and discuss the results of the long run to determine the preferred environment. • *We may have to search for some of our organisms as they may have buried themselves. • *Some may have even run off! • We will record the long run results in our notes.
Results – Focus Question Answer • How much moisture do isopods and beetles prefer? • Both isopods and beetles prefer dark environments. • Isopods are generally found buried in garden soil which is moist and dark. • Darkling Beetles are generally found in dry dark areas like wheat and grain storage areas in barns.
Additional Facts (Add to Isopods Sketches & Info) • When we began our discussion of isopods and beetles, we determined that beetles were insects because they had three body parts and antennae. But we did not classify isopods. • Isopods are actually part of the crustacean family. • Their soft undersides are actually gills that allow them to breath. • They get the moisture they need to survive from the moist soil. • They do not need a lot of water like other crustaceans.
Review of Our Objectives: • I can identify and describe terrestrial environments and the effects of environmental factors on organisms. Review Our Focus Question: • How do isopods and beetles respond to different amounts of light?