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