Ecological Interactions

What is the type of symbiosis in which one organism benefits and another organism is neither helped or hurt?

• mutualism

• parasitism

• competition

• commensalism

What is the type of symbiosis in which both organisms benefit?

• mutualism

• parasitism

• competition

• commensalism

What is the type of symbiosis in which one organisms benefits and the other is harmed?

• mutualism

• parasitism

• competition

• commensalism

What relationship exists between a caribou and a wolf?

• symbiotic

• predator-prey

• mutualistic

• commensalistic

Which pair of organisms share in a mutualistic relationship?

• A tapeworm living in a cow's stomach taking the cows nutrients

• A barnacle hitching a ride on a whale to plankton-rich waters (barnacles eat plankton)

• A clownfish and a sea anemone protecting each other

• A snake eating a mouse

Which scenario describes a commensalistic relationship?

• A tapeworm living in a cow's stomach taking the cows nutrients

• A barnacle hitching a ride on a whale to plankton-rich waters (barnacles eat plankton)

• A clownfish and a sea anemone protecting each other

• A snake eating a mouse

Symbiosis is

• the collective term used to describe the interactions between two or more organisms

• when organisms benefit each other

• when one organism benefits and the other is harmed

• when one organism benefits and the other is neither helped or hurt

If two birds occupy the same niche (they live in the same place and eat the same food) their relationship will be that of

• predator-prey

• competition

• mutualism

• commensalism