Kingdom animalia
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Transcript of Kingdom animalia
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Kingdom Animalia
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Characteristics of Animals
Multi-cellular Specialized (adapted for particular function) Examples? Heterotrophs Mostly sexual repro, some asexual Ability to move Includes invertebrates, vertebrates
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Body Plan/Morphology
Symmetry: a pattern of structure Asymmetry - no pattern Radial symmetry - body parts branch out
from a central point Bilateral symmetry - pattern is a mirror
image along each side of a line Exhibit “cephalization”
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Asymmetry
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Radial Symmetry
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Bilateral Symmetry
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Germ layers: Fundamental tissue types found in animals Gives rise to other tissues Body cavities: Allow for organization of the animal Also helps with movement in some
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Invertebrates
Have radial or bilateral symmetry Some are segmented Body support is diverse ……. Carbon dioxide as a by-product of metabolism Most animals have a circulatory system Digestion done by absorption Nervous system varies in complexity Reproduction is sexual or asexual……or
hermaphroditic in some species
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Vertebrates
Include fishes, amphibians, reptiles, birds, and mammals All except fishes spend part of their life on land Body support - endoskeleton Skeleton designed to suit animal’s needs Body coverings - designed to hold water inside the body Closed circulatory systems Digestion occurs in the gut More-developed nervous system Internal, external fertilization
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Phylum Chordata
Vertebrates fall into this phylum Called chordates Features include: Notochord - develops into backbone Dorsal hollow nerve cord - becomes brain, spinal cord Pharyngeal pouches - outpockets of digestive tract Postanal tail - behind anal opening
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