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Definition
| animals without a backbone |
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Definition
| sponges. sessile with porous bodies and choanocytes. |
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Term
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Definition
| central cavity in the sponge. |
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Term
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Definition
| collar cells. found in lining inside of the spongocoel or internal water chambers. |
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Definition
| gelatinous region that separates the two layers of cells of a sponge. |
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Definition
| cells named for their use of pseudopodia. wander through the mesohyl. |
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Definition
| each individual sponge functions as both male and female in sexual reproduction. |
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Term
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Definition
| (hyrdras, jellies, sea anemones, and coral animals. radial symmetry, gastrovascular cavity, and cnidocytes. |
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Term
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Definition
| central digestive compartment of cnidarian. |
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Definition
| cylindrical forms that adhere to the substratum by aboral end of the body and extend their tentacles, waiting for their prey.[image] |
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Term
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Definition
| falttened, mouth-down version of polyp[image] |
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Term
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Definition
| cells that function ind efense and the capture of prey |
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Term
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Definition
| organells (capsules) capable of everting (turning inside out) |
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Definition
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Definition
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Definition
| organisms that lack a body cavity |
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Term
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Definition
| fatworms are dorsoventrally flattened acoelomates. |
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Term
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Definition
| carnivores that prey on smaller animals or feed on dead animals |
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Term
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Definition
| organisms with body cavity partially covered by mesoderm. |
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Term
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Definition
| digestive tube with a separate mouth and anus. |
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Term
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Definition
| species that have females that produce more femals from unfertilized eggs. |
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Term
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Definition
| Roundworms. unsegmented and cylindrical with tapered ends. |
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Term
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Definition
| animals that are lined by the mesoderm. |
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Term
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Definition
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Term
| closed circulatory system |
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Definition
| blood is contained in vessels and therefore distinct from fluid in the body cavity. |
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Term
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Definition
| phyla of animals that share the structure lophophore (horseshoe-shaped or circular fold of the body wall bearing ciliated tentacles that surround the mouth.) |
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Term
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Definition
| colonial animals that superfically resemble mosses. |
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Term
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Definition
| tube-dwelling marine worms ranging from 1 mm to 50 cm in length |
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Term
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Definition
| superfially resemble clams and other bivalve mollusks |
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Term
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Definition
| have a muscular foot, visceral mass, and a mantle. |
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Term
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Definition
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Definition
| containing most of the internal organs. |
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Term
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Definition
| fold of tissue that drapes over the visceral mass and secretes a shell. |
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Term
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Definition
| houses the gills, anus, and excretory pores. |
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Term
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Definition
| straplike rasping organ to scrape up food. |
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Term
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Definition
| ciliated larva common to marine mollusks. |
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Definition
| excretory tubes in each segment in members of Phylum Annelida. |
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Term
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Definition
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Term
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Definition
| regional segmentation, jointed appendages, and an exoskeleton |
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Term
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Definition
| exoskeleton (external skelton)constructed from layers of protein and chitin. |
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Term
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Definition
| shedding oldexoskeleton and secreting a larger one. used for arthropods to grow. |
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Term
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Definition
| fluid (hemolymph) is propelled by a heart hrough short arteries and then into spaces called sinuses surrounding thetissues and organs. |
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Term
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Definition
| extinct. subgroup of arthropoda |
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Term
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Definition
| eurypterids, horseshoe crabs, scorpions, spiders, ticks. named from chelicerae. subgroup of arthropoda. |
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Term
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Definition
| centipedes, millipedes, insects. subgroup of arthropoda. |
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Term
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Definition
| crabs, lobsters, shrimps, barnacles, and others. subgroup of arthropoda |
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Term
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Definition
| clawlike feeding appendages. |
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Definition
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Term
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Definition
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Term
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Definition
| multifaceted eyes with many separate focusing elements. |
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Term
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Definition
| scorpions, spiders, ticks, mites. |
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Term
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Definition
| gass exchange in spiders. |
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Definition
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Definition
| outnumbers all other forms oflife combined. |
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Definition
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Term
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Definition
| outpocketings of the digestive tract. |
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Term
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Definition
| accomplishes gas exchange in insects. branched,chitin-lined tubes that infiltrate the body and carry oxygen directly to cells. |
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Term
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Definition
| young resemble adults but are smaller and have different body proportions. |
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Term
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Definition
| larval stages that look entirely different from adult stage. |
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Term
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Definition
| one of the largest groups of crustaceans. mostly small marine species. |
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Term
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Definition
| another group of small crustaceans. |
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Term
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Definition
| large crustaceans. exoskeleton is hardened by calcium carbonate. lobsters, crayfish, crabs, and shrimp. |
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Term
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Definition
| sessile or slow-moving animals with radial symmetry as adults. |
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Term
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Definition
| unique to echinoderms. network of hydraulic canals branching into extensions called tube feet. |
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Term
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Definition
| have water vascular system and secondary radial symmetry |
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Term
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Definition
| function in locomotion, feeding, and gas exchange. |
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Term
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Definition
| two invertebrate subphyla and all vertebrates. |
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