Transcription of Chapter 18 Lab Dichotomous Keys
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Chapter 18 Lab Dichotomous Keys
Name Class Date Open-Ended Inquiry Design Your Own Lab Chapter 18 Lab Dichotomous Keys Problem Big Idea A Dichotomous key is one Can you construct a Dichotomous key that could be used to way to organize and classify organisms. identify organisms? Skills Objectives Students will be able to Introduction identify an organism using a In May 2007, scientists and other volunteers gathered in Rock Dichotomous key. design a Dichotomous key. Creek Park, Washington, , to participate in a BioBlitz a quick, 24-hour survey of species living in the park. Teams worked Preparation Time 60 90 minutes if you identify in 4-hour shifts throughout the park. By the time they were done, the reference materials the teams had identified more than 650 species! Class Time Teams included experts on different types of organisms such Part A: 15 minutes as birds, beetles, fungi, and plants. The experts used identification Part B: 30 minutes; more if guides, or keys, to help them identify the organisms they found.
each pair that best describes an organism. By following the steps in the key, the reader narrows down the list of choices and finally names the organism. After you have learned to use a dichotomous key, you will design your own key for a group of organisms. Skills Focus Observe, Classify, Compare and Contrast, Sequence Materials • reference ...
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