Ecosystems: Levels of Organization

An ecosystem contains living and nonliving things.

• True

• False

Together, all the ecosystems on Earth form...

• a community.

• a biome.

• a biosphere.

• an Earthsphere.

A duck, a dragonfly, a morel mushroom and a bobcat are all examples of...

• organisms.
• populations.
• communties.
• ecosystems.

Which of the following is a population?

• hawks, barred owls, and eagles on NC coast

• mountain stream

• all the frogs in a pond

• blue-tailed skinks (lizards) around a barn

Living factors or organisms that affect an ecosystem are

• abiotic factors

• species

• trophic level

• biotic factors

What are the abiotic factors in this image?

• water, sunlight, dirt, air

• birds and plants

• water, plants, and birds

Water temperature would be an example of ...

• a biotic factor.
• an abiotic factor.

Multiple organisms of the same species describes a

• organism
• population
• community
• ecosystem

Andrea is on the grils cross country tream. She is heading out for a run when she comes across 20 Canadian geese.  What level of organization is this group of Canadian geese?

• organism
• population
• community
• biome

What are the ecological levels of organization from smallest to the largest?

• organism, population, community, ecosystem, biome, biosphere
• organism, community, population, ecosystem, biome, biosphere
• organism, population, community, biome, ecosystem, ecosphere.
• organism, community, population, biome, ecosystem, ecosphere