Lecture 9 Biology 2

Lecture 9 Biology 2 - Invertebrates II Animals without...

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1 Invertebrates II Animals without “backbones” 2 Phylum Arthropoda : Insects, Crustaceans, Spiders, Over half of all known organisms are arthropods (“jointed feet”) What is an arthropod? Exoskeleton, molting (life on land, vulnerable) Segmented body 2 or 3 specialized body parts Sexual reproduction (mostly) 1. Cheliceriformes 2. Crustacea 3. Hexapoda 3 Phylum Arthropoda : Insects, Crustaceans, Spiders, • What is an arthropod? –Exoskeleton (protection, muscle insertion, prevent desiccation) –Life on land, in water
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4 Phylum Arthropoda : Insects, Crustaceans, Spiders, • What is an arthropod? –Molting 5 Phylum Arthropoda : Insects, Crustaceans, Spiders, • What is an arthropod? –Segmented body –2 or 3 specialized body parts 6 What is an arthropod? •D i v e r s e r ep r od
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7 1. Arthropoda—Cheliceriformes: Spiders, scorpions, mites, ticks, horseshoe crabs •2 b
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Lecture 9 Biology 2 - Invertebrates II Animals without...

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