Lap practical - Most have the ability to know what they are...

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Lap practical Know the taxonomy and the phylum corresponding to the particular critter Anthropods Exoskeleton – rigid and flexible where is needs to be on the critter, (nematods) capable to shed there exoskeletons Prevent dehydration Wings derive from the exoskeleton Constraints: doesn’t allow further growth, exoskeletons only have a particular limit of growth Only during multing (shedding of exoskeleton) can internal fertilization can occur Segmented body which come together to create tagmosis Each group of segemented areas have their own function Most can fly, open circulatory system leading to low metabolism Well developed central nervous system
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Unformatted text preview: Most have the ability to know what they are capable of, even when taken from their natural habitat Metamorphosis Subphylum Trilobita Subphylum Chelicerata Marine Examples are sea scorpions, horseshoe crabs (considered as living fossils) Class Arachnida Spiders (true spiders: multi species, and all are predators, use venom to take down there prey), scorpions Change from a chelicera to a mandible Subphylum Crustacea Very successful in marine Lobsters, crabs, barnacles, crawfish Subphylum Uniramia (paraphyletic) Anthropods are an important vector of human diseases *know the difference from protostomes and deuterostomes...
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This note was uploaded on 04/07/2008 for the course BIOL 200 taught by Professor Wee during the Spring '08 term at Loyola New Orleans.

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