Chapter 2- Principles Of Biology Flashcards
Biological community
Made up of interacting populations in a certain area at a certain time
Abiotic factor
Non living parts of environment
Biosphere
The portion of earth that supports living things
Biotic factor
Living organisms that inhabit an environment
Commensalism
Symbiotic relationship in which 1 species benefits and the other species is neither harmed nor benefited
Ecology
Study of interactions that place between organisms and their environment
Ecosystem
Made up of interacting populations in a biological community and the community’s abiotic factors
Habitat
The place where an organisms lives out it’s life
Mutualism
Both species benefit
Niche
All strategies and adaptions a species uses in its environment
Parasitism
One species derives benefit at the expense of another species(the host)
Population
Group of organisms; all same species, which interbreed an live in the same area at the same time
Symbiosis
Relationship in which there is a close and permanent association between organisms of different species
Autotroph
Organism that uses light energy or energy story in chemical compounds to make energy-rich compounds
Biomass
Total weight of living matter at a trophic level
Decomposer
Break down the complex compounds of dead and decaying plants and animals into simpler molecules that can be easily absorbed
Food chain
Simple model that scientists use to show how matter and energy move through an ecosystem
Food web
Shows all possible feeding relationships at a trophic level in a community
Heterotroph
Organism that cannot make it’s own food and feeds on other organisms
Trophic level
Each organism in a food chain represents a feeding step in the passage of energy and materials
