Chapter 18 Flashcards
(21 cards)
Ecology
the study of interactions of living organisms with one another and with their environment
Biotic
describes living factors in the environment
Abiotic
Describes the nonliving part of the environment, including water, rocks, light, and temperature
Population
a group of organisms of the same species that live in a specific geographical area
Community
All the populations of species that live in the same habitat and interact with each other
Ecosystem
a community of organisms and their abiotic environment
Biosphere
the part of earth where life exists
Herbivore
an organism that eats only plants
Carnivore
an organism that eats only animals
Omnivore
an organism that eats both plants and animals
Food chain
The pathway of energy transfer through various stages as a result of feeding patterns of a series of organisms
Food web
A diagram that shows the feeding relationship between organisms in an ecosystem
Energy pyramid
a triangular diagram that shows a n ecosystems loss of energy which results as energy passes through the ecosystems food chain
Carrying capacity
the largest population that an environment can support at any given time
Prey
an organism that is killed and eaten by another organism
Predator
and organism that eats all or part of another organism
Symbiosis
a relationship in which two different organisms live in close association with each other
Mutualism
a relationship between two species in which both species benefit
Commensalism
a. Relationship between two organism in which one benifits and the other is unaffected
Parasitism
a relationship between two species in which one benefits and the other is harmed
Convolution
the evolution of two spices that is due to mutal influence, often in a way that Jamie’s the relationship more beneficial
