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Eighth Grade (Grade 8) Food Chains and Webs Questions

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Grade 8 Food Chains and Webs
What is the purpose of a food chain?
  1. shows what organisms eat which foods
  2. shows the importance of the Sun's energy
  3. depicts the predator/prey relationships between organisms
  4. shows the transfer of energy between trophic levels
Grade 8 Food Chains and Webs
A gazelle eats grass and is later eaten by a tiger. Which is the prey?
  1. lion
  2. tiger
  3. grass
  4. gazelle
Grade 8 Food Chains and Webs
Organisms that exclusively feed on producers are
  1. herbivores.
  2. omnivores.
  3. carnivores.
  4. predators.
Grade 8 Food Chains and Webs
What is a model that shows ALL the feeding relationships in an ecosystem?
  1. habitat
  2. food web
  3. food chain
  4. biosphere
Grade 8 Food Chains and Webs
What is the primary purpose of a food web?
  1. illustrates what eats what
  2. diagrams the apex predator in a chain
  3. depicts the interconnectedness of organisms
  4. shows the movement of energy in an ecosystem
Grade 8 Food Chains and Webs
Mushrooms and bacteria are considered
  1. producers.
  2. consumers.
  3. carnivores.
  4. decomposers.
Grade 8 Food Chains and Webs
The last component of the food chain is a
  1. producer.
  2. consumer.
  3. decomposer.
  4. predator.
Grade 8 Food Chains and Webs
Suppose that the pesticides used by humans have killed many of the herbivores in an ecosystem. What will most likely happen?
  1. The populations of plants will increase, and the populations of carnivores will decrease.
  2. The populations of carnivores will increase, and the populations of plants will decrease.
  3. The populations of both plants and carnivores will decrease.
  4. The populations of both plants and carnivores will increase.
Grade 8 Food Chains and Webs
Which type of organism breaks down the cells of dead organisms?
  1. producer
  2. consumer
  3. decomposer
  4. omnivore
Grade 8 Food Chains and Webs
What organism cannot make its own food?
  1. heterotroph
  2. chemotroph
  3. producer
  4. autotroph
Grade 8 Food Chains and Webs
Secondary consumers are also known as herbivores.
  1. True
  2. False
Grade 8 Food Chains and Webs
Which is an autotroph?
  1. producer
  2. consumer
  3. scavenger
  4. decomposer
Grade 8 Food Chains and Webs
Which organism is an example of an autotroph?
  1. oak tree
  2. butterfly
  3. mushroom
  4. dog
Grade 8 Food Chains and Webs
Predators such as foxes, owls, woodpeckers, and skunks make up the                     of a deciduous forest.
  1. tertiary consumers
  2. secondary consumers
  3. primary consumers
  4. producers
Grade 8 Food Chains and Webs
Organisms such as green plants or algae are
  1. decomposers.
  2. herbivores.
  3. consumers.
  4. producers.
Grade 8 Food Chains and Webs
Organisms that feed only on other consumers are
  1. herbivores.
  2. omnivores.
  3. carnivores.
  4. predators.
Grade 8 Food Chains and Webs
A primary consumer is a                                          .
  1. meat eater that eats primary consumers.
  2. plant eater that eats tertiary consumers.
  3. plant eater that eats producers.
  4. meat eater that eats secondary consumers.
Grade 8 Food Chains and Webs
A(n)                 is the depiction of what eats what.
  1. food web
  2. biosphere
  3. decomposer
  4. energy pyramid
Grade 8 Food Chains and Webs
Why does a food chain begin with plants?
  1. They produce food from light energy, carbon dioxide, and water.
  2. All the species of the ecosystem depend on them for food.
  3. They do not depend on other living creatures for food.
  4. All of the above
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