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Eighth Grade (Grade 8) Ecology Questions

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Grade 8 Biomes
Which is an example of a aquatic ecosystem?
  1. tundra
  2. ocean
  3. grassland
  4. rain forest
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 Communities, Populations, and Ecosystems
What refers to a community of organisms, along with their nonliving, abiotic environment?
  1. ecosystem
  2. geology
  3. model
  4. astronomy
Grade 8 Biotic and Abiotic
Predators can be classified as what type of influence?
  1. living
  2. nonliving
  3. genetic
  4. inorganic
Grade 8 Food Chains and Webs
Mushrooms and bacteria are considered
  1. producers.
  2. consumers.
  3. carnivores.
  4. decomposers.
Grade 8 Biomes
What is a biome?
  1. a community of organisms that live in a particular area along with all the abiotic factors
  2. all the members of one species in a particular area
  3. a group of land ecosystems with similar climates and organisms
  4. the study of how living things interact with each other and their environment
Grade 8 Communities, Populations, and Ecosystems
A(n)                 is all the populations of different species that live in an ecosystem.
  1. organism
  2. community
  3. habitat
  4. ecology
Grade 8 Biomes
Which biome has the most biodiversity?
  1. coniferous forest
  2. tropical rainforest
  3. desert
  4. deciduous forest
Grade 8 Biomes
The vast frozen plains located within the Arctic Circle is the
  1. tundra.
  2. boreal forest.
  3. timberline.
  4. permafrost.
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 Communities, Populations, and Ecosystems
What is the role a species plays in its ecosystem?
  1. natural selection
  2. adaptation
  3. niche
  4. none of the above
Grade 8 Symbiosis
Symbiosis includes                 .
  1. mutualism
  2. commensalism
  3. parasitism
  4. all of the above
Grade 8 Biomes
Ponds and lakes represent what type of biome?
  1. flowing-water
  2. wetlands
  3. standing-water
  4. intertidal zones
Grade 8 Communities, Populations, and Ecosystems
The maximum length of time an organism can be expected to live is a
  1. response.
  2. life span.
  3. development.
  4. metabolism.
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.
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