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Biology Exam Prep

IM GOING TO CRY

QuestionAnswer
Mollusca soft bodies with hard shells Ex:snails, clams ,
Gsastropods protected by a single spiral shell, mostly marine, mantle cavity functions as a lung Ex snails
Annelids have segmented bodies, have closed circulatory system. Ex: earthwarms , leeches
Arthopods segmentation, hard exoskeletons Ex: crabs , ants , spiders, centipedes
Chordates are vertebrates, a dorsal hollow nerve chord, pharyngeal slits, post anal tails Ex: mammals, birds, reptiles ,amphibians
Nematodes referred as roundworms, have bilateral symmetry, complete digestive track
Flatworms lack body cavities, have one opening for gastrulation Ex: tapeworms , flukes , free living flatworms
Bilaterians have bilateral symmetry. Three Branches : Lophotrohoans Edysozoans, Deuterosomes
Cnidaria are radially symmetric, have two cell layers. Ex Jellyfish , corals , sea anemones
Vertrebrates have backbones
invertebrates do not have backbones
Deuterostomes have embryonic development , development of the anus. Ex echinoderms and Chordates
Ecdysozoanes have external skeletons that must shed for growth to occur. Ex: nematodes and arthropods
Lophotrochozoanes flatwords,mollusks and annelids
Cnidarians have radial symmetry, have two bodies
Bivalves most are suspension feeders
Created by: timicia
 

 



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