Topic%208_ArthropodStory

Topic%208_ArthropodStory - Name ArthropodStory In-Class...

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Name___________________________ http://evolution.berkeley.edu/evolibrary/article/3_0_0/arthropodstory ArthropodStory In-Class Questions What % of animal species are arthropods? 2% 21% 42% 83% There are a billion billion insects alive on earth today. How many for each of us? What is an arthropod ? The five inherited characteristics of arthropods: These five inherited features are possessed by: a. insects b. spiders c. crustaceans d. millipedes e. trilobites f. the common ancestor of all arthropods g. all of the above All arthropods possess what type of symmetry? A more common name for a myriapod is __________________. A more common name for a chelicerate is _________________. How many pairs of legs characterize insects? __________ How many pairs of mouth appendages on an insect ? _____ How many pairs of antennae? ______ How many pairs of limbs (total)? _______ How many pairs of walking limbs typify spiders ? _________________ How many antenna pairs on a myriopod? ___________________ How many antenna pairs on a trilobite? ___________________ Sanctacaris (aka Santa Claws) was probably a chelicerate. Sketch its place on a cladogram. (Use the back of this sheet).: Opabinia might be closely related to the ancestral arthropod. Place it on a cladogram:
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