5-Animal_Div._II_Verts-34-S08

5-Animal_Div._II_Verts-34-S08 - Animal Diversity II Meet...

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Animal Diversity II Meet the Verts! (Let’s see an invertebrate do this!) Animal Diversity II Meet the Verts! (Let’s see an invertebrate do this!) Eumetazoa Bilateria, Protostomia, Ecdysozoa Eumetazoa Bilateria, Protostomia , Ecdysozoa Phylum: Arthropoda = jointed appendages Characters: - bilateral, strong cephalic, complete gut - coelom - chitious exoskeleton - well developed nervous system - open circulatory system - complex life histories (larval stages) - sexual reproduction, dioecious Eumetazoa Bilateria, Protostomia, Ecdysozoa Eumetazoa Bilateria, Protostomia , Ecdysozoa Phylum: Arthropoda 4 major subphyla: Subphyla: Trilobita Trilobita , all extinct Figure 33.27 A trilobite fossil Trilobita Trilobita
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Eumetazoa Bilateria, Protostomia, Ecdysozoa Eumetazoa Bilateria, Protostomia , Ecdysozoa Phylum: Arthropoda 4 major subphyla: Subphyla: Chelicerata Chelicerata (fang-like organs) Class: Arachnida Arachnida – 4 paired legs, 2 body parts, Exp/ spiders and horseshoe crabs Figure 33.30x Lycosid spider: female with offspring Arachnida Arachnida Eumetazoa Bilateria, Protostomia, Ecdysozoa Eumetazoa Bilateria, Protostomia , Ecdysozoa Phylum: Arthropoda 4 major subphyla: Subphyla: Uniramia Uniramia (1 pair of antennae) Class: Insecta Insecta – largest group, bugs!, Exp/ flies, butterflies, beetles… Class: Diplopoda Diplopoda – 2 pairs of legs per segment, herbivorous, Exp/ millipedes Class: Chilopoda Chilopoda – 1 pair of legs per segment, carnivorous, Exp/ centipedes Figure 33.32 Insect flight, dragonfly Insecta
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Dipolopoda (millipedes) Dipolopoda (millipedes) Chilopoda (centipedes) Chilopoda (centipedes) Eumetazoa Bilateria, Protostomia, Ecdysozoa Eumetazoa Bilateria, Protostomia , Ecdysozoa Phylum: Arthropoda 4 major subphyla: Subphyla: Crustacea Crustacea , aquatic - sometime considered a class - lobsters, crabs, shrimp, barnacles Figure 33.35 Crustaceans: Lobster (top left), banded coral shrimp (bottom left), barnacles (right) Eumetazoa Bilateria, Dueterostomia Eumetazoa Bilateria, Dueterostomia Phylum:
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5-Animal_Div._II_Verts-34-S08 - Animal Diversity II Meet...

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