Phil. 3
refers to a group of different populations interacting with one another
Community
Symbiosis greek word
symbioun means Living together
refers to a relationship between two or more organisms in which one of both organisms benefit
Symbiotic relationship
relationship where one organism benefits while the other is unaffected or unharmed.
COMMENSALISM (+,0)
relationship where both organisms benefited
MUTUALISM (+,+)
relationship where one organism benefits the other is harmed/affected.
PARASITISM (+,-)
relationship where one organism is the prey (organism that is eaten) and another organism is the predator (organism that eats another orgaism
PREDATION
Organisms that can make their own food from inorganic matter and energy from the sun are called
AUTOTROPHS
is one of the most important relationships in an ecosystem.
Food getting
Any organism that cannot make its own food and obtains its nutrients from another organism is called a
HETEROTROPH
consume another organism
CONSUMERS
organism that produces their own food.
PRODUCERS
organism that eat meat or another animal
Carnivores
organism that consume plants
Herbivores
organism that eat both plant and animals
Omnivores
organism that eat dead plants and animals
DECOMPOSERS
3 DECOMPOSERS
Scavengers
Detritivores
Saprotrophs
consume dead organic matter and digest them internally.
Detritivores
eat soft tissues
Scavengers
consume the left overs of the two other decomposers. They secrete an enzyme to digest dead matter and then absorb the nutrients in it.
Saprotrophs
TROPHIC LEVEL
the level occupied by an organism in a food chain or food web
Autotrophs that convert sun energy into chemical energy.
PRIMARY PRODUCERS
eat the primary producers
PRIMARY CONSUMERS
eat the primary consumers
SECONDARY CONSUMERS
eat the secondary consumers
TERTIARY CONSUMERS
consumers that obtain their energy consuming dead organic materials
DECOMPOSERS
is the total mass of organisms at a certain trophic level.
Biomass
refers to a single path or sequence of events in an ecosystem where one organism eats another and then is eaten by another organism.
food chain
It starts with the producers who make food, continues with consumers or animals who eat the food, and ends with the top predator
food chain
consists of a number of food chains meshed together
food web
represents feeding relationships within a community
food web
takes place in an area which is not previously covered by vegetation
Primary Succession
Takes place in a habitat already previously occupied by vegetation
secondary Succession