kingdom animalia. characteristics eukaryotic organisms multicellular no cell walls heterotrophs...
TRANSCRIPT
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Kingdom Animalia
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Characteristics
Eukaryotic organisms
Multicellular
No cell walls
Heterotrophs (consumers)
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Characteristics
Specialized tissues for impulses and movement (nervous system)
Movement relates to ability to find food
Most develop from Zygotes
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Body Plans - Symmetry
Animals that are irregular in shape are asymmetrical
Animals that are regular in shape are symmetrical
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Symmetry An animal has radial
symmetry if it can be divided along any plane, through a central axis, into even halves
An animal has bilateral symmetry if it can be divided down it's length into similar right and left halves
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Bilateral Symmetry
Those with Bilateral Symmetry have:
Dorsal (top)
Ventral (bottom)
Anterior (front)
Posterior (back)
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Invertebrates
8 main Phyla
No backbones
95% of all animals belong to this group
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Phylum Porifera
Examples: Tube Sponge, Glass Sponge, Sea Sponge
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Phylum Porifera
Approx. 5 000 species
Sessile (immobile) Asymmetrical No mouth or digestive cavity Marine or fresh water
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Phylum Cnidaria
Examples: Jellyfish, Hydra, Sea anemones, and corals
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Phylum Cnidaria
Approx. 10 000 species
Sessile or motile Medusoid (jellyfish) or polyp (inverted jellyfish)
form in life cycle Radial symmetry Mostly marine, some fresh water
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Phylum Platyhelminthes(flatworms)
Examples: Planaria, Tapeworm, Tubellarians, Flukes
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Phylum Platyhelminthes
Approx. 19 000 species
Free-living in marine or fresh water, or parasitic Body flattened dorsoventrally Mouth only
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Phylum Nematoda(roundworms)
Examples: Hookworm, pinworm, Trichinella
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Phylum Nematoda
Approx. 20 000+ species
Cylindrical, slender, tapered at either end Free-living or parasitic
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Phylum Annelida(segmented worms)
Examples: Earthworms, leeches, polychaetes
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Phylum Annelida
Approx. 12 000+ species
Segmented body Terrestrial and aquatic Mouth and anus
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Phylum Mollusca
Examples: Snails, clams, squids
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Phylum Mollusca
Approx. 100 000+ species
Muscular foot Shell present in many forms All habitats
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Phylum Arthropoda
Examples: Insects, crab, mites, ticks, spiders, centipedes
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Phylum Arthropoda
Approx. 1 000 000+ species
Segmented body, some segments may be fused
Jointed appendages External skeleton
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Phylum Echinodermata
Examples: Starfish, Sea Cucumbers, Sea Urchins
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Phylum Echinodermata
Approx. 7 000 species
Adults have pentamerous (five-sided) radial symmetry
marine
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Vertebrates
Have backbones
1 main Phyla
Only 5% of animals belong to this group, including us
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Phylum Chordata
Examples: Fish, amphibians, reptiles, birds, mammals
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Phylum Chordata
Approx. 7 000 species
Notochord (flexible rod shaped body of embryo) at some time in life history
Bilateral symmetry