Hayes Review Three Ecosystems

Which level of organization does the group pictured represent?

• a community

• a population

• an organism

• an ecosystem

What is the smallest level of organization within an ecosystem?

• population

• community

• ecosystem

• organism

Which of the examples below describe the level of organization within an ecosystem that is the smallest?

• A kangaroo jumping around

• A kangaroo, ants, lizard, a tree, and a bird

• a group of kangaroos

• a kangaroo, ants, a lizard, a bird, the sun, and the soil

Which of the following is an example of the community level of organization?

• a school of fish

• a school of fish, the ocean, a shark, the dirt, and seaweed

• a school of fish, a shark, and seaweed

• a fish

An ecosystem is made up of _______ and ________ things.

• Living and nonliving
• Alive and dead
• Plants and animals
• Land and water

Communities are made up of living things only. Which one of these is a community?

• Trees, birds, dirt, worms
• Deer, grass, leaves, bunnies
• Whales, water, seashells, fish
• Sand, camels, mountains, coyotes

Populations contain more than one member of the species. Which one of these is a population?

• Deer and mice
• 10 squirrels
• squirrel
• squirrel, deer, and mice

What is another word for population of living things?

• Niche
• Habitat
• Species
• Organism 

Any characteristic that helps an organism survive in its ecosystem is an ____________. 

• Niche
• Habitat
• Adaptation
• Organism

Which type of symbiosis has both organisms benefit?

• Symbiosis
• Commensalism
• Parasitism
• Mutualism