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Tenth Grade (Grade 10) Ecology Questions

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Grade 10 Biogeochemical Cycles
How does phosphorus move through the biosphere?
  1. by cycling within and between ecosystems
  2. by one-way movement through ecosystems
  3. by air and water but not by organisms
  4. by organisms but not by air or water
Grade 10 Food Chains and Webs
Organisms such as plants that make their own food are
  1. heterotrophs.
  2. autotrophs.
  3. parasites.
  4. consumers.
Grade 10 Biogeochemical Cycles
How do nutrients move through an ecosystem?
  1. biogeochemical cycles
  2. water cycles
  3. ecological pyramids
  4. energy pyramids
Grade 10 Food Chains and Webs
Which food chain expresses a logical order?
  1. producer -- herbivore -- carnivore
  2. herbivore -- producer -- carnivore
  3. producer -- carnivore -- herbivore
  4. carnivore -- herbivore -- producer
Grade 10 Communities, Populations, and Ecosystems
Which term refers to an interaction among groups of organisms with the nonliving environment?
  1. biosphere
  2. biome
  3. habitat
  4. ecosystem
Grade 10 Biogeochemical Cycles
How is water distributed through the biosphere?
  1. condensation
  2. hydrologic cycle
  3. perspiration
  4. flooding
Grade 10 Biogeochemical Cycles
What role do decomposers play in the phosphorus cycle?
  1. Absorb phosphorus
  2. Release phosphorus into atmosphere
  3. Combustion
  4. Return phosphorus into the soil
Grade 10 Biomes
Permafrost is characteristic of the
  1. tundra.
  2. temperate forest.
  3. desert.
  4. tropical rain forest.
Grade 10 Communities, Populations, and Ecosystems
No population can grow indefinitely. The ultimate size of any population is limited by
  1. the carrying capacity of its environment.
  2. its death rate.
  3. its birth rate.
  4. its r value.
Grade 10 Conservation and Biodiversity
Ladybugs and praying mantises are examples of a natural pest controller. These organisms reduce the need for farmers to use harmful pesticides. How does biological pest control (i.e., using ladybugs instead of pesticides) contribute to sustainable development?
  1. Biological pest control helps farmers spend less money on purchasing pesticides.
  2. Biological pest control does not cause pollution that can enter the food chain or harm other organisms.
  3. Biological pest control significantly declines species populations.
  4. Biological pest control is a myth.
Grade 10 Food Chains and Webs
Which consumer gets the most benefit from the energy of the Sun?
Food Web Without Text Labels
  1. mouse
  2. mushroom
  3. snake
  4. hawk
Grade 10 Communities, Populations, and Ecosystems
What statement best describes why ecological succession occurs?
  1. Plants and animals grow and as they grow they spread to new areas.
  2. Every organism changes the environment it lives in. As more organisms inhabit an area, it becomes more livable for other organisms.
  3. The older generation always takes the place of the younger generation.
  4. The new plants and animals move in and kill the old plants and animals due to the natural order.
Grade 10 Ecology
What is ecology?
  1. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings
  2. the scientific study of plants, including their physiology, structure, genetics, ecology, distribution, classification, and economic importance
  3. the branch of biology that deals with the normal functions of living organisms and their parts
  4. the branch of science that deals with microorganisms
Grade 10 Biotic and Abiotic
What is the part of earth where life exists?
  1. biome
  2. habitat
  3. population
  4. biosphere
Grade 10 Communities, Populations, and Ecosystems
The human population is growing exponentially.
  1. True
  2. False
Grade 10 Food Chains and Webs
Which series orders organisms from those with the greatest amount of energy available to them to those with the least amount of energy available to them?
  1. secondary consumer, primary consumer, producer
  2. producer, secondary consumer, primary consumer
  3. primary consumer, secondary consumer, producer
  4. producer, primary consumer, secondary consumer
Grade 10 Biogeochemical Cycles
This phenomenon occurs when gases function like glass in a greenhouse, allowing visible light to enter but trapping the heat.
  1. solar flares
  2. abiotic factor
  3. ozone effect
  4. greenhouse effect
Grade 10 Communities, Populations, and Ecosystems
Which term describes a group of different species that live together in a defined area?
  1. a biosphere
  2. a population
  3. a community
  4. an ecosystem
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