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25 Cards in this Set

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5 basic features in in comparing animals
(1) Body Symmetry (2) Cephalization (3) type of digestive system/gut (4) type of body cavity (5) segmentation
Types of Body symmetry
none, radial, and bilateral
symmetrical in many ways
Radial symmetry
symmetrical in only one way
bilateral symmetry
concentration of nervous tissue in the "head" or leading region of the body
cephalization
types of digestive system
sac-like (mouth only); tube like(mouth and anus)
Organisms with a sac like digestive system...
regurgitate food
Organisms with a tube like digestive system
piss and take shits
Types of body cavities
no coelom, false coelom, true coelom
true coelum means
has several different types of layers of tissues separating organs
types of segmentation
no segmentation, segmented
having segmentation means...
there can be specializaton (of function) within each segment
Features of Phylum Platyhelminthes....
bilateral symmetry, cephalization, a saclike gut, tissue layers, and rudimentary organs, but have no body cavity and no segmentation
Features of Phylum Annelida
Invertebrate animals that have bilateral symmetry, cephalization, a tube-like gut, a true coelom, segmentation, tissue layers and organs
Features of Phylum Arthropoda
Invertebrate animals that have an exoskeleton, bilateral symmetry, cephalization, a tube-like gut, a true coelom segmentation, tissue layers and organs
example of arthropod
crayfish
most diverse group of animals
arthropod
three major groups of arthropods
(1) lobsters, crabs, and crayfish (2) horseshoe crabs, spiders, and scorpions (3) insects, milipedes, and centipedes
Arthropods typically have what kind of appendages
jointed and paired
know how to label a crayfish
know it
example of arthropod
crayfish
most diverse group of animals
arthropod
three major groups of arthropods
(1) lobsters, crabs, and crayfish (2) horseshoe crabs, spiders, and scorpions (3) insects, milipedes, and centipedes
Arthropods typically have what kind of appendages
jointed and paired
know how to label a crayfish
know it