Biology Flashcards 3-21-11

26 terms by bulldoglacrosse19

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having cells with 'good' or membrane-bound nuclei


requiring organic compounds of carbon and nitrogen for nourishment


consisting of many cells


Animals without backbones


Animals with backbones


processes and functions of an organism


organisms that cannot make their own food


an organism that obtains energy and nutrients by feeding on other organisms or their remains.


Meat Eaters


an organism that eats only plants.


an organism that eats both plants and animals.


feed on plant and animal remains

filter feeders

organism that takes in water to filter out the food and then releases the extra water (clam, oysters, sponge)

symbiotic relationship

close interaction between species in which one species lives in or on the other


draw air into, and expel out of, the lungs


to spread or scatter freely or widely


nerve cells that detect conditions in the body's environment


(of spores or microorganisms) not capable of movement


capable of movement

sexual reproduction

reproduction involving the union or fusion of a male and a female gamete

asexual reproduction

reproduction without the fusion of gametes

body symmetry

Radial (circular body pattern) or bilateral symmetry (dorsal, ventral, anterior, posterior--top/bottom/head/tail)

radial symmetry

the property of symmetry about an axis

bilateral symmetry

the property of being symmetrical about a vertical plane


concentration of sensory and brain structures in the anterior end of the animal

body cavity

A fluid-containing space between the digestive tract and the body wall.

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