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Food Webs
Trophic level, symbiosis, niche, parts of Chapter 36
16
Biology
9th Grade
11/17/2009

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Term
an organism in more than one trophic level (primary, secondary, tertiary) means...
Definition
a better chance of surviving
Term
Rule of 10
Definition
10% of energy in biomass is carried from one trophic level to another
Term
Mutualism Symbiosis
Definition
both organisms benefit
Term
Parasitism Symbiosis
Definition
one organism benefits while the other has a cost
Term
Commensalism Symbiosis
Definition
one organism benefits while the other has no harm or benefit
Term
Predation Symbiosis
Definition
one organism consumes another
Term
Niche
Definition
the unique(no 2 organisms have the EXACT same niche) living arrangement of an organism defined by its behaviors, habitat, food sources, active and rest times, and other factor
Term
Producers
Definition
organisms that make its own food and produce organic molecules that serve as food for other organisms convert sunlight, CO2 and water into biomass
Term
Consumers
Definition
obtains food by eating producers or other consumers
Term
Decomposer
Definition
breaks down wast and dead organisms
Term
trophic level
Definition
feeding level
Term
food chain
Definition
pathway of food transfer from one trophic level to another
Term

Primary Consumer

 

Definition

consumer that feeds on producers 

(herbivores)

Term
Secondary Consumers
Definition

eat primary consumers

(carnivores)

Term
Tertiary Consumer
Definition

eats secondary consumers

(carnivores)

Term
biomass
Definition
organic material(dry) manufactured by producers
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