Know the five subphyla of arthropods and the key characteristics of each subphylum.Identify the external features of a preserved crayfish. Remove the appendagesone side of the preserved crayfish and lay them out on p. 217. The instructor will initial the page after the correct identification of the removed appendages.Remove the carapace and observe a gill utilizing a microscope. Draw a picture of the gill.D. Observe the live crayfish specimens (if available).E. Observe the external1145
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