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Eighth Grade (Grade 8) Ecology Questions

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Grade 8 Communities, Populations, and Ecosystems
A group of lizards living in a desert is an example of a
  1. population.
  2. shelter.
  3. succession.
  4. food web.
Grade 8 Food Chains and Webs
In a deciduous forest, insects, birds, rodents, and deer are
  1. tertiary consumers.
  2. secondary consumers.
  3. primary consumers.
Grade 8 Food Chains and Webs
What is the difference between a food chain and a food web?
  1. The interlinking energy needed for a food chain is greater than for a food web.
  2. More gas is given off by the microorganisms in a food chain than in a food web.
  3. Food chain refers to one path of energy, whereas a food web refers to multiple paths of energy.
  4. None of the above
Grade 8 Communities, Populations, and Ecosystems
What are the five levels of environmental organization, from largest to smallest?
  1. biosphere, ecosystem, community, population, organism
  2. ecosystem, biosphere, population, organism, community
  3. biosphere, population, ecosystem, community, organism
  4. biosphere, ecosystem, population, community, organism
Grade 8 Food Chains and Webs
Which grouping is an example of a possible food chain?
  1. grass --> cow --> human
  2. cow --> grass --> human
  3. ant --> grass --> cow
  4. grass --> human --> cow
Grade 8 Communities, Populations, and Ecosystems
                 are things that prevent a population from growing any larger.
  1. Predators
  2. Limiting factors
  3. Biospheres
  4. Symbiosis
Grade 8 Food Chains and Webs
An African lion is a
  1. decomposer.
  2. consumer.
  3. producer.
  4. herbivore.
Grade 8 Food Chains and Webs
Bears are omnivores that eat anything organic.
  1. True
  2. False
Grade 8 Conservation and Biodiversity
The first organisms in a disturbed area are                   .
  1. climax communities
  2. pioneer species
  3. succession
  4. biomes
Grade 8 Communities, Populations, and Ecosystems
                is the study of interactions among organisms and their environments.
  1. Ecology
  2. Biosphere
  3. Habitat
  4. Ecosystem
Grade 8 Communities, Populations, and Ecosystems
A(n)                 is all the populations of different species that live in an ecosystem.
  1. population
  2. community
  3. habitat
  4. ecology
Grade 8 Conservation and Biodiversity
The first organisms in a disturbed area are                   .
  1. climax communities
  2. pioneer species
  3. succession
  4. biomes
Grade 8 Food Chains and Webs
Which type of organism is at the top of an energy pyramid?
  1. decomposer
  2. producer
  3. herbivore
  4. carnivore
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