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Fifth Grade (Grade 5) Ecology Questions

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Grade 5 Communities, Populations, and Ecosystems
The complex interactions of different organisms with one another and with their environment is a(n)                .
  1. biome.
  2. community.
  3. ecosystem.
  4. population.
Grade 5 Communities, Populations, and Ecosystems
A population can survive within an ecosystem if the                                                   .
  1. habitat is large enough to provide shelter.
  2. group can migrate each season.
  3. niche is completely unoccupied by another species.
  4. basic needs can be met.
Grade 5 Communities, Populations, and Ecosystems
When does an ecosystem in its best ability to support a variety of organisms?
  1. organisms share food and habitats equally.
  2. competition for food is controlled by humans.
  3. the physical-space needs of organisms are met.
  4. organisms use the parts of the ecosystem differently.
Grade 5 Food Chains and Webs
An example of a decomposer is
  1. bacteria.
  2. water.
  3. energy.
  4. niche.
Grade 5 Food Chains and Webs
Which list shows a possible order in which energy moves through an ecosystem?
  1. herbivore, carnivore, Sun, producer, decomposer
  2. Sun, producer, herbivore, carnivore, decomposer
  3. Sun, producer, predator, consumer, decomposer
  4. producer, Sun, carnivore, herbivore, decomposer
Grade 5 Food Chains and Webs
The algae at the beginning of the food chain are
  1. consumers.
  2. decomposers.
  3. producers.
  4. heterotrophs.
Grade 5 Food Chains and Webs
In an ecosystem, how are food webs and food chains different?
  1. Food webs begin with animals, and food chains begin with plants.
  2. Food webs rarely begin with plants, and food chains begin with animals.
  3. Food webs show the relationship between many different food chains in a single ecosystem.
  4. Food chains show the relationship between many different food webs in a single ecosystem.
Grade 5 Food Chains and Webs
Animals that hunt other animals to eat are
  1. prey.
  2. omnivores.
  3. predators.
  4. herbivores.
Grade 5 Food Chains and Webs
In the diagram below, which is a decomposer?
Food Web
  1. bird
  2. snake
  3. grass
  4. mushroom
Grade 5 Food Chains and Webs
What is the original source of almost all the energy in most ecosystems?
  1. carbohydrates
  2. sunlight
  3. water
  4. carbon dioxide
Grade 5 Food Chains and Webs
The niche of a producer is to
  1. eat other consumers.
  2. provide food for carnivores.
  3. make carbon dioxide-oxygen.
  4. provide food for themselves and other organisms.
Grade 5 Communities, Populations, and Ecosystems
Which description is true about the organization of an ecosystem?
  1. Communities make up species, which make up populations.
  2. Populations make up species, which make up communities.
  3. Species make up communities, which make up populations.
  4. Species make up populations, which make up communities.
Grade 5 Food Chains and Webs
The images below show a partial food chain.
Pictograph - Grass→Pictograph - Mice→Pictograph - Snake
Which organism would most likely come after the snake in the food chain?
  1. Pictograph - Larva
  2. Pictograph - Eagle
  3. Pictograph - Mice
Grade 5 Food Chains and Webs
Imagine that pollution caused all the plants in an aquatic food chain to die. Would this affect the population of the largest fish?
  1. Yes, because the largest fish need to eat plants to supplement their diet.
  2. Yes, because all the food energy in the chain begins with the plants.
  3. No, because the largest fish are big enough to survive a change in the ecosystem.
  4. No, because only the smallest fish depend on the plants for survival.
Grade 5 Food Chains and Webs
What organism feeds only on plants?
  1. carnivore
  2. herbivore
  3. omnivore
  4. detritivore
Grade 5 Communities, Populations, and Ecosystems
What will animals likely do when its ecosystem was destroyed?
  1. stay there.
  2. find a new place to live.
  3. live on water.
  4. get revenge.
Grade 5 Biomes
Large ecosystems located in different parts of the world that have their own climate, soil, plants, and animals are
  1. taiga.
  2. grasslands.
  3. biomes.
  4. pollutants.
Grade 5 Biotic and Abiotic
Which is a biotic factor that affects the size of a population in a specific ecosystem?
  1. average temperature
  2. type of soil
  3. number and kinds of predators
  4. concentration of oxygen
Grade 5 Food Chains and Webs
What breaks down dead plants and animals?
  1. decomposer
  2. consumer
  3. predator
  4. producer
Grade 5 Food Chains and Webs
Why can many kinds of plants and animals live together in an ecosystem?
  1. The plants and animals all care for each other and protect one another.
  2. The plants and animals are part of a food chain and depend on each other to live.
  3. The plants and animals have nothing to do with each other, so they can live together.
  4. The plants and animals all feed on the same things, so they compete with each other for food.
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