Lesson 21: Interactions Among Organisms

Front

A relationship in which one organism, the predator, benefits by eating another organism, the prey.

Back

Predation

Front

An organism that mainly eats animals.

Back

Carnivore

Front

An organism that mainly eats plants or plant parts.

Back

Herbivore

Front

An organism that eats both plants and animals in similar amounts.

Back

Omnivore

Front

A close relationship between two species, where at least one organism benefits.

Back

Symbiosis

Front

A relationship between two species in which both species benefit.

Back

Mutualism

Front

A relationship between two species in which one species benefits and the other is unaffected.

Back

Commensalism

Front

A relationship in which one species benefits while the other is harmed but not usually killed.

Back

Parasitism

Front

A tick feeds on the blood of a dog, making the dog itchy and possibly sick. What type of symbiosis is this?

Back

Parasitism

Front

A bird builds a nest in a tree. The bird benefits from the shelter, but the tree is unaffected. What type of symbiosis is this?

Back

Commensalism