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Chapter 13

3rd 9 wk- test: Chapter 13

vertebrate an animal w/ a backbone
invertebrate in animal w/ out a backbone
bilateral symmetry describes animals w/ body parts arranged in the same way on both sides of their body
radial symmetry describes animals w/ body parts arranged in a circle around a central point; similar to a bicycle wheel
sessile describes organisms, such as trees, that remain attached to one place during their lifetime
filter feeder an organism that obtains food & oxygen by filtering it from the water from which it lives
collar cell in sponges, the lining cells that help move through the sponge by beating of the flagella
regeneration the ability of an organism to replace body parts; a type of asexual reproduction in which a whole new organism grows from just a part of the parent organism
hermaphrodite an animal that produces sperm and egg
larva a young organism that develops between egg and adult stages
cnidarian a phylum of hollow-bidied animals w/ stinging cells
tentacles the arm- like structures that surround the mouth of some organisms and help them to capture food
polyp a vase shaped cnidarian that is usually sessile
medusa a bell shaped cnidarian that is free swimming
free living describes an organism that finds its own food and place to live w/ out depending on another organism; the opposite of a parasite
anus an opening at the end of the digestive tract through which solid wastes leave the body
cyst a young, parasitic worm w/ a protective covering
Created by: Backwrdfshy