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Third Grade (Grade 3) Communities, Populations, and Ecosystems Questions

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Grade 3 Communities, Populations, and Ecosystems
An organism is
  1. a nonliving thing
  2. an individual living thing
  3. an animal that eats fruit and meat
  4. none of the above
Grade 3 Communities, Populations, and Ecosystems
Some animals need to build or find                 to protect them.
  1. rocks
  2. trees
  3. shelter
  4. air
Grade 3 Communities, Populations, and Ecosystems
Which of these is a good description of the HABITAT of an alligator?
  1. Alligators live in the desert
  2. Alligators live on the bottom of a pond and come on land when it is sunny and warm
  3. Alligators eat fish, birds, and other small animals
  4. Alligators have scales on their skin for protection
Grade 3 Communities, Populations, and Ecosystems
Everything that surrounds and affects a living thing is called its               .
  1. home
  2. community
  3. ecosystem
  4. environment
Grade 3 Communities, Populations, and Ecosystems
An                 is all the living and nonliving things that surround an organism.
  1. organism
  2. cell
  3. reproduce
  4. environment
Grade 3 Communities, Populations, and Ecosystems
A                is all the populations in an ecosystem.
  1. community
  2. population
  3. ecosystem
  4. endangered
Grade 3 Communities, Populations, and Ecosystems
A place where living and nonliving things interact, such as forests and deserts is called a                .
  1. ecosystem
  2. population
  3. community
  4. habitat
Grade 3 Communities, Populations, and Ecosystems
The number of a group of the same kind of living things that live in the same place is called a                .
  1. habitat
  2. population
  3. ecosystem
  4. community
Grade 3 Communities, Populations, and Ecosystems
A                 is all the members of one kind of organism in an ecosystem.
  1. community
  2. species
  3. population
  4. endangered
Grade 3 Communities, Populations, and Ecosystems
Living and nonliving things that interact in an environment make up an                .
  1. habitat
  2. ecosystem
  3. food chain
  4. food web
Grade 3 Communities, Populations, and Ecosystems
A living thing's habitat gives it everything it needs to survive.
  1. True
  2. False
Grade 3 Communities, Populations, and Ecosystems
An ecosystem is made up of all the living and nonliving things that interact in one place.
  1. True
  2. False
Grade 3 Communities, Populations, and Ecosystems
All ecosystems have the same soil.
  1. True
  2. False
Grade 3 Communities, Populations, and Ecosystems
Each ecosystem has places for plants and animals to live. Animals homes are called               .
  1. environment
  2. habitats
  3. ecosystem
  4. desert
Grade 3 Communities, Populations, and Ecosystems
All of the populations that live in an ecosystem are called a                .
  1. ecosystem
  2. population
  3. community
  4. habitat
Grade 3 Communities, Populations, and Ecosystems
If a fire burned part of a forest ecosystem, which of these would probably happen?
  1. All of the animals would die.
  2. All of the plants and seeds would be destroyed forever.
  3. A flood would bring new rich soil.
  4. The animals would move to a nearby part of the ecosystem.
Grade 3 Communities, Populations, and Ecosystems
            Community            is all the population in an ecosystem.
Grade 3 Communities, Populations, and Ecosystems
The living and nonliving things that interact in an environment is called an                .
  1. decomposer
  2. habitat
  3. ecosystem
  4. shelter
Grade 3 Communities, Populations, and Ecosystems
Which of these provides a population with all of its needs, such as a tree does for squirrels and bugs?
  1. environment
  2. population
  3. community
  4. habitat
Grade 3 Communities, Populations, and Ecosystems
What is something that forces an ecosystem to change?
  1. disturbance
  2. interdependence
  3. adaptation
  4. succession
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