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Ecosystems exam

8th grade vocabulary

What does abiotic mean? nonliving
What is a biotic factor? a living thing
What is an ecosystem? Contains all of the living and nonliving components of an environment.
What is a population? Many of the same species of organisms that all live in an area.
What is a community? Populations of many species that live together in an area.
What is symbiosis? A close relationship between two different species of organisms.
What are the three different types of symbiosis? Mutualism, commensalism, and parasitism.
What is parasitism? A type of symbiosis where one species benefits and the other is harmed. Example: A pig with a tapeworm.
What is a host? The organism that the parasite invades in order to survive and reproduce.
What is mutualism? A relationship where both species of organism benefit. Example: Cows and birds.
What is commensalism? A relationship where one species benefits and the other is uneffected. Example: Barnacle and whale.
What is a producer? An organism that is able to produce its own food using energy from the sun. All plants are producers.
What is a consumer? An organism that is incapable of producing its own food, and must get nutrition by feeding on an outside source.
What is a carnivore? Eats only meat.
What is a herbivore? Eats only plants.
What is an omnivore? Eats plants and meats.
What is a scavenger? An organism that feeds on dead or decaying matter. Example: vulture.
What is a decomposer? Organisms that break down other dead organisms. Example: bacteria and fungi.
Created by: mbernander