arthropods

arthropods - Shrimp, lobsters, crayfish Fairy shrimp, brine...

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Arthropods Jointed-legged invertebrates
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Arthropod Characteristics Chitinous exoskeleton Paired-jointed appendages Growth with ecdysis (molting) Open circulatory system Complete digestive tract
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Exoskeleton Major reason for success! Provides Support Protection Prevention of dehydration Sites for muscle attachment
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Metamorphosis Change body form from immature (larval) stages to adult forms Reduces competition between stages for Food Living space
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Taxonomy of Arthropods 4 subphyla Trilobitomorpha (all extinct) Chelicerata Crustacea Uniramia
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Chelicerata Horseshoe crabs Spiders Mites Ticks Scorpions
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Crustacea
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Unformatted text preview: Shrimp, lobsters, crayfish Fairy shrimp, brine shrimp Water fleas Barnacles Uniramia Class Diplopoda (millipedes) Class Chilopoda (centipedes) Class Hexapoda (insects) Nervous System Johnston’s organs (hearing - on antennae) Tympanic organs (hearing – on legs or body) Compound eyes (facets – ommatidia – fused) Simple eyes ( ocelli ) Economic Impact of Arthropods 1. Name one effect each major group has on mankind (good or bad). 2. For insects, list 4 good things that they do and 4 bad things that they are responsible for....
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This note was uploaded on 11/09/2011 for the course BIO 110 taught by Professor Harmon during the Winter '11 term at BYU.

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arthropods - Shrimp, lobsters, crayfish Fairy shrimp, brine...

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