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| Group of tentacles used for feeding. |
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| no males, females giving birth to females. |
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| a type of tubular nephridium with the inner open end draining the coelm and the outer open end discharging to the exterior. |
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| chemoreceptive sense organs for sampeling water. |
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| a twisting phenomenon in gastropod development that alters the position of the organs by 180 degrees. |
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| On snails: part of the foot that allows them to seal themselves into their shells. |
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| condition of being composed of serially repeated parts. |
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| a segment that is repeated |
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| a mass of fluid enclosed within a muscular wall to provide support for muscle action. |
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| remove waste from blood and coelom in annelids |
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| region of segmented animal anterior to the mouth. Ex. the little dot on an earthworms "nose" |
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non-living external layer, secreted by syncytial epidermis
restricts growth
can be molted
contains collagen
resists hydrostatic pressure |
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| molting as the body increases in size |
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| The body of nematodes are always composed of the same number of cells. |
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| organization of body into tagmata |
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| each separate body region |
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| abrupt change in growth can be complete or incomplete. |
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| Holometabolous (complete metamorphisis) |
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complete metamorphisis during development. PUPAL STAGE Caterpillar -> butterflie
a large and abrupt change in size. |
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| Hemimetabolous (incomplete metamorphisis) |
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| gradual metamorphisis in insects without a pupal stage. (cicada) from small -> larger -> larger -> large |
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| series with a series of tentcle like projections (podia or tube-feet) waster is pushed or pulled through to help in motion. |
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| small jaw-like projections which keep the body degree free of debris. |
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| skin gills, soft delicate projections covered only in epidermis extended outward. involved in respiration. |
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| gill like structures that all chordates have at some point in their life. |
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| musous secreting, cilicated grooves in the floor of the pharynx. catches food particles that come through the gills. in humans turned into thyroid gland. |
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| lacks an amniotic membrane around embryo. Fish and amphibians |
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| have the amniotic membrane. Reptiles, aves, mammals. |
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| false notochord that the animals that belong to phylum hemichordata posses. |
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