Food Webs Organization & Relationships

What is a population?

• An organism such as a dog or a cat.

• Groups of organisms of the same species living in the same area at the same time.

• A group of DIFFERENT animals living together in the same area.

• An interaction of living and non-living things.

What is a community?

• All the interacting organisms living in one area.

• A place where interactions between living and non-living things occur.

• All of the parts of Earth where life exists—all ecosystems.

• Groups of organisms of the same species living in the same area at the same time.

Which sequence shows increasing complexity levels of ecological organization?

• biosphere, ecosystem, community, population

• population, community, ecosystem, biosphere

• population biosphere, community

• community, biosphere, population, ecosystem

All of the following are biotic factors EXCEPT:

• Wolves

• Bacteria

• Algae

• Temperature

TRUE or FALSE: Abiotic factors are non-living.

• TRUE

• FALSE

An organism's job in the ecosystem is its:

• community

• niche

• profession

• population

Which of the following is an example of a habitat?

• forest

• jungle

• freshwater

• all of the above

The interaction between two different organisms living in close physical association is called:

• simbiosis

• community

• dependence

• interdependence

An example of a parasitic relationship is:

• A bird living in a nest

• A tick feeding on the blood of a dog

• A bee getting nectar and pollinating a plant

• A fish hiding behind a shark

A relationship where only ONE organism benefits from the other is called:

• mutualism

• parasitism

• commensalism

• independence