Vocab~Population Size and Structure
The number of individual organisms born into a population in a given year.
What is birth rate?
A relationship that results when organisms in an environment rely on one another for resources.
What is interdependence?
A chemical substance that an organism requires to live.
What is a nutrient?
An animal that consumes other animals.
What is a carnivore?
An agent that can cause infection and disease.
What is a pathogen?
The movement of individuals out of a population.
What is emmigration?
A symbiotic relationship in which both species benefit from the interaction.
What is mutualism?
A component of the biosphere that serves as a long-term storage area for water or nutrients.
What is a reservoir?
An organism that breaks down dead and decaying organisms to obtain energy.
What is a decomposer?
A substance found in saliva, tears, and mucus that destroys the cell walls of bacteria.
What is a lysozyme?
The elements in an ecosystem that restrict the growth of a population.
What are limiting factors?
A symbiotic relationship in which one species benefits from the interaction and the other species is neither harmed nor helped.
What is commensalism?
A nutrient that is in short supply and restricts the growth of an organism.
What is a limiting nutrient?
An organism that uses the energy from the sun or inorganic substances to make its own food; also called an autotroph.
What is a producer?
The swelling of a part of the body accompanied by redness, heat, and pain as a response to an infection.
What is inflammation?
The number of individuals in a population.
What is population size?
A long-term relationship between two different species.
What is symbiotic?
A process by which bacteria convert ammonia into nitrates and nitrites.
What is nitrification?
A diagram of the energy transfer among organisms in an ecosystem.
What is a food chain?
The components of blood that help protect against pathogens and help in blood clotting when injuries are sustained.
What are white blood cells?
The number of individuals in each age category.
What is age structure?
A species that is introduced to a new ecosystem, becomes established in that ecosystem, and threatens local biodiversity.
What is invasive species?
A process that recycles elements and other matter through the biosphere.
What is a biogeochemical cycle?
A step in a food chain that demonstrates the transfer of energy.
What is a trophic level?
A specialized cell in the skin that identifies pathogens that enter the body and carries them to the lymph nodes for destruction.
What are langerhans cells?