Oxpeckers feed on the ticks found on a rhinoceros. The oxpeckers get a meal and the rhinoceros is helped by the removal of the ticks.

• parasitism

• commensalism

• mutualism

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• mutualism

• commensalism

• competition

• parasitism

A flea feeds on a mouse’s blood. This is good for the flea but bad for the mouse.

• mutualism

• commensalism

• parasitism

A relationship that describe a close interaction between two different species is known as what?

• Biodiversity

• Symbiosis

• Predation

• Emigration

What is mutualism?

• A relationship where one organism benefits and the other is harmed.

• A relationship where both organisms benefit.

• A relationship where one organism benefits and the other is unaffected.

• A relationship where neither organism benefits.

Which of the following is an example of commensalism?

• A bee pollinating a flower.

• A barnacle attaching to a whale.

• A tick feeding on a dog.

• A lion hunting a zebra.

What is the main benefit of symbiosis in an ecosystem?

• It increases competition among species.

• It helps organisms survive and thrive.

• It reduces biodiversity.

• It causes environmental degradation.

Which of the following is NOT a type of symbiotic relationship?

• Mutualism

• Commensalism

• Parasitism

• Predation

How does commensalism differ from mutualism?

• In commensalism, both organisms benefit.

• In commensalism, one organism is harmed.

• In commensalism, one organism benefits and the other is unaffected.

• In commensalism, neither organism benefits.

What is an ecological relationship?

• A relationship between two non-living things.

• A relationship between two living organisms.

• A relationship between an organism and its environment.

• A relationship that only occurs in aquatic environments.