22 terms

Spencer Ecology Quiz 2

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Symbiosis
Relationship in which two species live closely together
Types of Symbiosis
Mutualism, Commensalism, Parasitism and Predation
Mutualism
Both benefit and are dependent on each other
Commensalism
One benefits and the other is neither helped nor harmed
Predation
One benefits and the other is killed
Predator
The organism that is the hunter
Prey
The organism that is being hunted
Parasitism
One benefits and the other is harmed
Parasite
Orgnaism that grows, feeds and is shelterd in or on a different organism while contributing nothing to the survival of its host
Endoparasite
Internal parasite (Ex: Tape worm, round worm)
Ectoparasite
External parasite (Ex: Leech, tick, mosquitoe)
Food Chain
Series of organisms in which each eats or decomposes the preceding one
Food Web
Complex network of many interconnected food chains and feeding relationships
Trophic Levels
All organism that are the smae number of energy transfers away from the original source of energy (Sunlight) that enters an ecosystem
10%
The amound of usable energy entering one trophic level transferred to the organism at the next trophic level
Arrows
Represent a transfer of energy
Example of Food Chain
Example of Food Web
Pyramid of Energy Flow
Diagram reprsenting the flow of energy through each trophic level
Water Cycle
Biogeochemical cycle that collects, purifies and distributes the earth's supply of water from teh envrionment to living organism then back to the environment
Carbon Cycle
Biogeochemical cycle that depends on photosynthesis and respiration
Nitrogen Cycle
Biogeochemical cycle that relies heavily on bacteria