Ecosystem and Organism Relationships Quiz

What is the sum of all the living and nonliving things in an area and the interactions among them called?

• Habitat

• Ecosystem

• Population

• Territory

What term describes all the organisms of a species that live in an area at the same time?

• Niche

• Habitat

• Population

• Symbiosis

What is a stable ecosystem?

• One with unpredictable changes

• One with constant energy flow and predictable changes

• One with no energy flow

• One with decreasing population sizes

What is the place where an organism lives called?

• Niche

• Habitat

• Territory

• Ecosystem

What is an organism's role in its community known as?

• Habitat

• Niche

• Territory

• Symbiosis

What is a close interdependent relationship between organisms of different species called?

• Competition

• Predation

• Symbiosis

• Territory

What is mutualism?

• A relationship where both organisms are harmed

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

• A relationship where both organisms benefit

• A relationship where neither organism benefits

What is commensalism?

• A relationship where both organisms benefit

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

• A relationship where one organism benefits and the other does not benefit

• A relationship where neither organism benefits

What is parasitism?

• A relationship where both organisms benefit

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

• A relationship where neither organism benefits

• A relationship where both organisms are harmed

What is predation?

• An interaction where organisms share resources

• An interaction where one organism kills and eats another

• An interaction where both organisms benefit

• An interaction where one organism is harmed and the other is unaffected