Term
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Definition
| produces spicules, transports food, and eliminates waste |
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Term
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Definition
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the posterior opening of the alimentary canal for egestion of feces
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Term
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Definition
| five pairs of thickly muscled vessels |
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Term
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Definition
| the flattened structure at the lower end of certain cnidarians |
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Term
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Definition
| a type of asexual reproduction in which portions from the parent form a new organism |
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Term
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Definition
| the presence of a “head” region |
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Term
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Definition
| the swollen region in the anterior of an earthworm |
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Term
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Definition
-
stinging cell containing nematocyst, used for defense
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Term
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Definition
| flagellated cells that line the inner cavity of a sponge |
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Term
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Definition
| portion of the digestive tract that temporarily stores food |
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Term
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Definition
| a tissue that usually covers or lines a structure |
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Term
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Definition
| the tube connecting the pharynx to the stomach |
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Term
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Definition
| the opening of the sponge’s body that expels water |
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Term
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Definition
| tube that expels water from the body of a mollusk |
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Term
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Definition
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Term
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Definition
| internal cavity of cnidarians where digestion and food circulation occur |
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Term
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Definition
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internal dormant cluster of cells encased in a tough spicule-reinforced covering
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Term
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Definition
| respiratory structure in aquatic organisms through which oxygen and carbon dioxide is exchanged |
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Term
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Definition
| thick-walled digestive organ that grinds food |
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Term
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Definition
| an organism that has both male and female reproductive organs |
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Term
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Definition
| small freshwater cnidarians commonly found in quiet lakes or ponds |
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Term
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Definition
| tiny openings in the sponge’s body for the intake of water |
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Term
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Definition
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tube the draws water into the mollusk
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Term
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Definition
| a section of the digestive system where most of the digestion and absorption of foods usually occurs |
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Term
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Definition
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an animal that lacks a backbone or vertebral column
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Term
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Definition
| sheath of tissues that covers the body of a mollusk |
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Term
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Definition
| the space between the mantle of the body of a mollusk |
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Term
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Definition
| free-swimming, umbrella-shaped stage in the life of cycle of cnidarians |
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Term
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Definition
| a noncellular, jellylike matrix between cell layers of a sponge |
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Term
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Definition
| the middle tissue layer in some animals |
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Term
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Definition
-
jellylike layer found between the ectoderm and the endoderm of a cnidarian
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Term
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Definition
| a stinging cell that contains poisonous barbs, coiled threads, or a sticky substance |
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Term
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Definition
| tubelike structures that filter wastes from blood |
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Term
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Definition
| nervous system that lacks a brain and major ganglia |
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Term
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Definition
| portion of the digestive tract that connects the mouth cavity and the esophagus |
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Term
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Definition
-
sessile, tubular cnidarians with a mouth and tentacles at one end and a basal disc at the other, reproduces asexually
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Term
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Definition
| plate-like structure in the pharynx of certain mollusks |
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Term
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Definition
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Term
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Definition
| a type of asexual reproduction in which a small piece of the organism can redevelop into a new, complete adult |
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Term
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Definition
| the inner divisions of a segmented worm |
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Term
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Definition
| stiff bristles on a segmented worm |
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Term
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Definition
| tube of a mollusk used to draw in or expel water |
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Term
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Definition
| sharp, pointed, supporting structure in sponges |
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Term
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Definition
| small soft, tubular structures in echinoderms |
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Term
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Definition
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Term
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Definition
| an animal that possesses a backbone or vertebral column |
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Term
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Definition
| the portion of a mollusk’s body that contains internal organs |
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Term
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Definition
| series of canals and tubules that are used for locomotion and food capture |
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Definition
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