Ecology Review

Front

What is the term for a relationship where one organism benefits at the expense of another?

Back

Parasitism

Front

Define ecosystem.

Back

An ecosystem is all of the living and nonliving things in an area that interact with each other.

Front

What type of symbiotic relationship exists when one species benefits and the other is neither helped nor harmed?

Back

Commensalism

Front

What happened to the insect population on Guam after the introduction of brown tree snakes?

Back

The insect population increased.

Front

What is the term for a relationship where both species benefit?

Back

Mutualism

Front

Give an example of parasitism in nature.

Back

Tapeworms residing in the human intestine.

Front

What is the role of a predator in an ecosystem?

Back

A predator is an organism that hunts and eats other organisms (prey).

Front

What is the difference between biotic and abiotic factors in an ecosystem?

Back

Biotic factors are living components (like plants and animals), while abiotic factors are nonliving components (like water, soil, and climate).

Front

What is the term for the maximum population size that an environment can sustain?

Back

Carrying capacity.

Front

How do invasive species affect native ecosystems?

Back

Invasive species can outcompete native species for resources, disrupt food webs, and lead to declines in native populations.