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29 Cards in this Set

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Aerobe
An organism that uses oxygen for respiration.
Anaerobe
An organism that can live without oxygen.
Endospore
A dormant form made by some bacteria when they produce thick walls around themselves when environmental conditions are unfavorable.
Antibiotic
A chemical produced by some bacteria that limit the growth of other bacteria.
Pathogen
An organism that causes disease.
Vaccine
Made from particles taken from damaged bacterial cell walls or killed bacteria that can prevent other bacterial diseases.
Saprophyte
Any organism that uses dead material as a food and energy source.
Protist
A one- or manny-celled organism that lives in moist or wet surroundings
Protozoan
Animal-like protists
Pseudopod
Temporary extentions of the cytoplasm that helps protozoans move.
Algae
Plantlike protists
Hyphae
Many-celled, threadlike tubes that are the mass of fungus
Lichen
Something formed when a fungus and either a green alga or cyanobacterium live together.
Mycorrhizae
An intricate web formed around the roots of plants. The plants provide the fungi with food while the fungi help the plants absorb water and nutrients.
Symmetry
The arrangement of the individual parts of an object
Invertebrate
Animals without a backbone. They make up 97% of all animals.
Cnidarian
Hollow-bodied animals with two cell layers that are organized into tissues.
Polyp
The vse-shaped body of the sea anemone and the hydra.
Medusa
A free swimming, bell-shaped body that jellyfish have.
Mollusk
Soft-bodied invetebrates that usually have a shell.
Mantle
A thin layer of tissue that covers a mollusk's soft body.
Gill
Organs in which carbon dioxide from the animal is exchanged for oxygen in the water.
Radula
A scratchy, tounge like organ in a mollusk with rows of fine, teethlike projections that the mollusk uses to scrape off small bits of food.
Open Circulatory System
Animals with no vessels to contain their blood. Instead, blood washes over the organs, which are grouped together in a fluid-filled body cavity.
Closed Circulatory System
Blood is carried in blood vessels
Athropod
Animals that have joined appendages
Appendages
structures such as claws, legs, and antennae that grow from the body
Exoskeleton
A rigid body covering that supports the body and reduces water loss.
Metamorphosis
A complete change in body form