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| Exercise 6: Adaptations of Stream Invertebrates—A Scavenger Hunt Exercise 6 emphasizes stream ecology and the evolutionary adaptations of stream invertebrates. It involves a field trip to a local stream in which students study physical and chemical parameters of the stream and participate in a scavenger hunt, looking for stream invertebrates that possess adaptations for living in moving water. The concepts of energy flow and food webs are also introduced. Exercise 7: The Classification of Organisms Exercise 7 is an introduction to animal taxonomy. A cladistic approach to the classification of a group of hypothetical animals involves students looking for synapomorphies that can be used in grouping animals. The exercise results in the generation of a cladogram and a set of scientific names for the hypothetical animals. |