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Chapter 3 - Key terms
Mr. Mechaelsen's 6th Grade Science
18
Science
6th Grade
10/05/2011

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Term
Protists
Definition
Eukaryotes that cannot be classified as animals, plants or fungi.
Term
Protozoans
Definition
Animal-like protists which are unicellular.   Protozoans can be classified into 4 groups, based on the way they live and move.
Term
Pseudopods
Definition
temporary bulges of the cell wall
Term
Contractile vacuole
Definition
a structure that collects the extra water and then expels is from the cell.
Term
Cilia
Definition
hairlike projections from cells that move with a wavelike motion.
Term
Symbiosis
Definition
a close relationship in which at least one of the species benefits.
Term
Mutualism
Definition
the relationship type of symbios when both partners benefit from living together.
Term
Algae
Definition
plantlike protists that are autotrophs
Term
Pigment
Definition
chemicals that produce color
Term
Spore
Definition
a tiny cell that is able to grow into a new organism
Term
Algal Bloom
Definition
the rapid growth of a population of algae
Term
Red tides
Definition
salt water algal blooms
Term
Eutrophication
Definition
is a process in which nutrients such as nitrogen and phosphorus, build up in a lake or pond over time
Term
fungi
Definition
eurkayotes that have cell walls, are heterotrophs and use spores to reproduce
Term
Hyphae
Definition
the structure of most cells in fungae.  They are branching, thread-like tubes that make up the bodies of multi-cellular fungi.
Term
Fruiting bodies
Definition
spores that are produced in reproductive structures
Term
budding
Definition
unicellular yeast cells that undergo a form of asexual reproduction
Term
lichen
Definition
fungus and either algae or autrophic bacteria that live together in a mutualistic relationship
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