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Eleventh Grade (Grade 11) Ecology Questions

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Grade 11 Biogeochemical Cycles
The carbon reservoir most affected as a direct result of human activity is the                .
  1. deep ocean
  2. vegetation
  3. atmosphere
  4. photosynthesis
Grade 11 Communities, Populations, and Ecosystems
A species that enters an environment where it has not lived before is a(n)                   .
  1. endangered species
  2. invasive species
  3. predator
  4. threatened species
Grade 11 Symbiosis
In this type of symbiosis, both organisms benefit from the relationship.
  1. commensalism
  2. mutualism
  3. parasitism
  4. scavenging
Grade 11 Symbiosis
Which of the following statements is TRUE of parasitism?
  1. One organism benefits, and the other is unaffected.
  2. One organism benefits, and the other is harmed.
  3. One organism benefits, and the other benefits more.
  4. Both organisms are harmed.
Grade 11 Biogeochemical Cycles
A cycle that continuously moves atoms, ions, and molecules from nonliving factors to living organisms is a                         .
  1. photogeochemical cycle
  2. chemogeobiological cycle
  3. biogeochemical cycle
  4. geobiochemical cycle
Grade 11 Communities, Populations, and Ecosystems
Which scenario best illustrates the concept of carrying capacity?
  1. The exponential growth of a fruit fly population continues to increase and will eventually double in ten days.
  2. The exponential growth of ants increases dramatically when its competitor species is forced to move due to habitat loss.
  3. The logistic growth of a giraffe population continues to decline due to the increase in number of predators.
  4. The logistic growth of a bunny population has stabilized because the population has reached the largest numbers that the area can support.
Grade 11 Conservation and Biodiversity
What term refers to the number and variety of species that live in an area?
  1. ecosystem
  2. environment
  3. resources
  4. biodiversity
Grade 11 Biogeochemical Cycles
What is the role of nitrogen-fixing bacteria in the nitrogen cycle?
  1. They create acid rain.
  2. They cause algal blooms.
  3. They make nitrogen into a more useful form.
  4. They move water through the environment.
Grade 11 Communities, Populations, and Ecosystems
Which list is the levels of organization in an ecosystem in the correct order?
  1. population, community, ecosystem, individual
  2. community, population, ecosystem, individual
  3. individual, community, population, ecosystem
  4. individual, population, community, ecosystem
Grade 11 Biotic and Abiotic
The amount of biomass produced in a given area during a given amount of time is                .
  1. productivity
  2. biodiversity
  3. ecology
  4. sustainability
Grade 11 Food Chains and Webs
In the food chain of plants --> mouse --> snake --> hawk, what might happen to the mouse population if snakes are removed from the ecosystem?
  1. The mouse population will decrease.
  2. The mouse population will increase.
  3. The mouse population will stay the same.
  4. It is impossible to predict.
Grade 11 Biogeochemical Cycles

This question is a part of a group with common instructions. View group »

What is the process by which carbon is released into the atmosphere from cars, homes, and factories?
  1. respiration
  2. transpiration
  3. photosynthesis
  4. combustion
Grade 11 Communities, Populations, and Ecosystems
Some species are so important to the functioning of an ecosystem that they are called                   .
  1. threatened species
  2. keystone species
  3. endangered species
  4. exotic species
Grade 11 Food Chains and Webs
What is an organism that eats only plants?
  1. carnivore
  2. detrivore
  3. herbivore
  4. omnivore
Grade 11 Biogeochemical Cycles
What is the best definition of global warming?
  1. Earth warming on all sides
  2. an increase in the average temperature worldwide caused by the greenhouse effect
  3. people around the world feeling warm all over
  4. Earth warming because of the many fires in the jungle
Grade 11 Biomes

This question is a part of a group with common instructions. View group »

Which biome is located directly on the equator?
  1. savanna
  2. desert
  3. tropical rainforest
  4. deciduous forest
Grade 11 Food Chains and Webs
In this food web, which organism is considered a tertiary consumer?
Food Web
  1. mushroom
  2. mouse
  3. snake
  4. hawk
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