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Biology lab

Unit 4 Lab 15

arthropod body plan consists of a segmented body, hard exoskeleton, and jointed appendages
open circulatory system in which hemolymph is circulated into the spaces surrounding the tissues and organs
chelicerata sea spiders, horseshoe crabs, scorpions, ticks, mites, and spiders
myriapoda centipedes and millipedes
hexapoda insects and relatives
crustacea crabs, lobsters, shrimps, barnacles, and many others
subphylum Chelicerata, are named for clawlike feeding appendages called chelicerae
eurypterids earliest cheliceriforms (water scorpions)
arachnids most modern cheliceriforms; which include spiders, scorpions, ticks, and mites
incomplete metamorphosis the young, called nymphs, resemble adults but are smaller and go through a series of molts until they reach full size
complete metamorphosis have larval stages known by such names as maggot, grub, or caterpillar
isopods terrestrial, freshwater, and marine species
decapods relatively large crustaceans and include lobsters, crabs, crayfish, and shrimp
planktonic crustaceans include many species of copepods, which are among the most numerous of all animals
Created by: danat214