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Third Grade (Grade 3) Ecology 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 Food Chains and Webs
A lion is a carnivore. What does a carnivore eat?
  1. plants
  2. animals
Grade 3 Succession
A gradual change in an ecosystem, sometimes occurring over hundreds of years is a             succession             .
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 Conservation and Biodiversity
Waste products that damage an ecosystem are called             pollution            .
Grade 3 Food Chains and Webs
An herbivore is animal that
  1. only eats fruit.
  2. only eats meat.
  3. only eats plants.
  4. only eats plants and meats.
Grade 3 Biomes
Caribou and polar bears live in which ecosystem?
  1. desert
  2. tundra
  3. grasslands
  4. tropical forest
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 Biotic and Abiotic
Which word best completes the sentence?
Sunlight, water, soil, and climate are the                 parts of an ecosystem.
  1. living
  2. growing
  3. nonliving
  4. interacting
Grade 3 Biotic and Abiotic
                is the pattern of weather in a place over a long time.
  1. Climate
  2. Soil
  3. Weather
  4. Ecosystem
Grade 3 Biomes
Grasshoppers and bison live in which type of ecosystem?
  1. desert
  2. tundra
  3. grasslands
  4. tropical forest
Grade 3 Biomes
Snakes, coyotes, and cactus live in the desert.
  1. True
  2. False
Grade 3 Food Chains and Webs
What is a carnivore?
  1. an animal that eats meat
  2. an animal that eats plants
  3. an animal that eats everything
  4. an animal that eats fruit and meat
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 Biomes
Oak, maple, and beech trees drop their leaves in the fall. In which ecosystem are they found?
  1. tundra
  2. tropical forest
  3. deciduous forest
  4. coniferous forest
Grade 3 Biomes
Which answer has the correct order from top to bottom of layers in the rainforest?
  1. forest floor, understory, canopy, emergent layer
  2. canopy, emergent layer, forest floor, understory
  3. understory, forest floor, emergent layer, canopy
  4. emergent layer, canopy, understory, forest floor
Grade 3 Biomes
A forest where all the trees drop their leaves during the winter is called a                     .
  1. savanna
  2. tropical rain forest
  3. coniferous forest
  4. deciduous forest
Grade 3 Food Chains and Webs
A                shows how energy passes from one organism to another organism.
  1. ecosystem
  2. food web
  3. food chain
  4. producer
Grade 3 Food Chains and Webs
What is a food chain?
  1. the energy from the sunlight
  2. the path of food from one living thing to another
  3. the extra food a plant stores
  4. a slug that eats leaves
Grade 3 Biomes
What is the biggest difference between a desert and a tropical forest?
  1. how cold each gets
  2. how warm each gets
  3. how much life each has
  4. how much rain each gets
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