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| poriferans are the simplest or most complex ? invertebrate |
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| poriferans are covered w/ |
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| poriferans are made up of |
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| all three layers of a sponge have |
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| amoebocytes w/ wandering cells carrying food and oxygen |
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| the outer layer of a sponge has |
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| the middle layer of a sponge has |
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| reproductive cells, spicules |
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| the inner layer of a sponge has |
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| a new organism forms from a single organsim (budding) |
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| a new organisim form from a female cell and a male cell |
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| the mouth of a cnidarian is surronded by |
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| cnidarians were the first to have |
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| cnidarians are classified by |
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| schyphozoans are what shape |
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| actinozoans are what shape? |
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| hyrdozoans are what shape |
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| tumbersaulting loooping flippig etc |
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| occurs when a line or plane divides animal in two identical mirror images |
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| a line or plane can pass through a central point at any angle |
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| only one line or plane of symmetry creates sies |
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| a line or plane can pass through a central point at any angle |
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| what were annelids the first to have? |
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| orgnas, tubelike digetive system, two openings |
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| uses to move, thick and muscular |
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| contains gills,gut and other orgnas |
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| s=uses radula to scrape food |
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| uses tenteacles and beack |
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| mollusks are the first to have |
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| jointed limbs and segmented bodies and an exoskeleton made of chiton |
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| an arthropods exoskeleton doess what |
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| provides support, allows an animal to move, keeps moist.... |
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| grasshoper,bee,butterfly are |
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| spider, tick, scorpion are |
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| how many segments do insects have? |
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| how many segments to crustaceans have? |
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| how many segments do arachnids have? |
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| 2- abdomen, chephalothorax |
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| how many segments to millipedes and centipedes have? |
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| how many legs do insects have |
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| how many legs do crustaceans have? |
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| how many legs do arachnids have? |
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| how many legs to centipedes have?? |
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| how many legs do millipedes have? |
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| how many antennae do insects have? |
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| how many antennae do crustaceans have? |
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| how many antennae do arachnids have? |
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| how many antennae do centipedes and millipedes have? |
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| internal skeleton covered w/ spines |
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| water vascular system uses |
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| water pressure in tube feet to do many functions |
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| sleve plate - ring canal- radial canal- ampulla- tube feet |
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| why are echinoderms closests to verterbrates |
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| an eye that is made up of many identical light senstive cells that work together |
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| a jaw found on some athropods |
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| an intestine in the digestive track |
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