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Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
biosphere   The top portion of the Earth's crust, all the waters that cover Earth's surface, and the atmosphere that surrounds Earth.  
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ecosystem   All of the organisms living in an area, as well as the nonliving parts of the environment.  
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Ecology   The study of interactions that occur among organisms and their environments.  
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Population   Made up of all the organisms of the same species that live in an area at the same time.  
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Community   All the populations of all species living in an ecosystem.  
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Habitat   The place where an organism lives.  
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Limiting Factor   Anything that restricts the number of individuals in a population.  
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Carrying Capacity   The largest number of individuals of one species that an ecosystem can support over time.  
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Biotic Potential   The highest rate of reproduction under ideal conditions.  
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Exponential Growth   When a species moves into a new area with plenty of food, living space, and other resources, the population grows quickly, in a pattern.  
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Producers   Organisms that use an outside energy source like the Sun to make energy-rich molecules.  
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Consumers   Organisms that cannot make their own energy-rich molecules.  
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Food Chain   A simple model of the feeding relationship in an ecosystem.  
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Symbiosis   Any close relationship between species.  
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Mutualism   A symbiotic relationship in which both species benefit.  
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Commensalism   A symbiotic relationship in which one organism benefits and the other is not affected.  
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Parasitism   A symbiotic relationship in which one organism benefits but the other is harmed.  
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Niche   An organism's role in the environment.  
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biotic   living  
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abiotic   not living  
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herbivore   plant eaters  
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carnivores   animals that eat other animals  
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omnivores   eat plants and other animals  
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prey   a consumer captured and eaten by another consumer  
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predator   consumers that capture and eat other consumers  
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A round worm living in a puppy is an example of what kind of symbiotic relationship?   parasitism  
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decomposers   consumes waste and other dead organisms  
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A clown fish protected by an anemone's tentacles is an example of which kind of symbiotic relationship?   commensalism  
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A fish living in a pond... is this an example of habitat or niche?   habitat  
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A cat uses its senses to find a mouse to eat... is this an example of habitat or niche?   niche  
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Is soil a living organism or a nonliving factor?   nonliving factor  
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Is a tree a living organism or nonliving factor?   living organism  
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Is water living or nonliving?   nonliving  
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Is the sun a living organism or a nonliving factor?   nonliving factor  
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Is grass living or nonliving   living  
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What is the part of the Earth that supports life called?   Biosphere  
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Competition for food, living space, or other resources can limit what?   population growth  
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If the number of birds in an area increases until there are no more nesting places, this means the ecosystem has reached its _______________ for birds.   carrying capacity  
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What does all life require a constant supply of?   energy  
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mutualism, commensalism, and parasitism are three kinds of what?   symbiosis  
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What kind of organism can directly convert energy from the sun into food?   producer  
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Trap - Mark - Release is a method for measuring what?   population  
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