DCA 3 Ecosystems Class Review

Front

What is a Decomposer?

Back

An organism that breaks down dead material and returns nutrients to the ecosystem.

Front

What is a Producer?

Back

An organism that can make its own food through photosynthesis, such as plants.

Front

What happens to a population when the birth rate exceeds the death rate?

Back

The population will grow.

Front

What are two factors that can increase population size?

Back

Birth Rate and Immigration.

Front

What type of relationship exists between a tapeworm and a cat?

Back

Parasitism, where the tapeworm benefits at the expense of the cat.

Front

What is the role of a Consumer in an ecosystem?

Back

An organism that obtains energy by eating other organisms.

Front

Define Mutualism.

Back

A type of symbiotic relationship where both organisms benefit.

Front

What is the difference between Immigration and Emigration?

Back

Immigration is the movement of individuals into a population, while Emigration is the movement out of a population.

Front

What is an example of Commensalism?

Back

A relationship where one organism benefits and the other is neither helped nor harmed, such as barnacles on a whale.

Front

What is the significance of Biodiversity in an ecosystem?

Back

Biodiversity contributes to ecosystem resilience, productivity, and stability.