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Tenth Grade (Grade 10) Ecology Questions

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Grade 10 Food Chains and Webs
The series of steps in which a large fish eats a small fish that has eaten algae is a                   .
  1. food chain
  2. pyramid of numbers
  3. pyramid of biomes
  4. food web
Grade 10 Food Chains and Webs
Most of the energy that fuels ecosystems on Earth comes from                .
  1. chemicals
  2. water
  3. sunlight
  4. bacteria
Grade 10 Food Chains and Webs
What organisms make their own food with sunlight or chemical energy?
  1. producers
  2. consumers
  3. decomposers
  4. scavengers
Grade 10 Conservation and Biodiversity
The variety of different species living in a habitat is                .
  1. woodland
  2. transection
  3. zonation
  4. biodiversity
Grade 10 Communities, Populations, and Ecosystems
The role an organism plays in an ecosystem is its                .
  1. abiotic
  2. niche
  3. producer
  4. food chain
Grade 10 Conservation and Biodiversity
The declining number and variety of the species in an area is                     .
  1. loss of biodiversity
  2. supply and demand
  3. a developed nation
  4. sustainability
Grade 10 Food Chains and Webs
Autotrophs are organisms that                     .
  1. eat each other.
  2. decompose for food.
  3. make their own food.
  4. scavenge for food.
Grade 10 Succession
The first organisms to repopulate an area affected by a volcanic eruption are                  .
  1. pioneer species
  2. primary producers
  3. climax species
  4. keystone species
Grade 10 Food Chains and Webs
Any organism that must obtain its food from a source outside itself is a(n)
  1. autotroph.
  2. heterotroph.
  3. parasite.
  4. saprophyte.
Grade 10 Food Chains and Webs
All plants and animals depend on energy from the                .
  1. ocean.
  2. biosphere.
  3. Sun.
  4. biome.
Grade 10 Food Chains and Webs
Which graphic best represents the flow of energy in a biome?
  1. food chain
  2. food web
  3. energy pyramid
  4. food circle
Grade 10 Symbiosis
Two different kinds of organisms living together for mutual benefit have a relationship of
  1. symbiosis.
  2. heterotroph.
  3. parasitosis.
  4. saprophyte.
Grade 10 Food Chains and Webs
Why are decomposers such an essential part of any food web and ecosystem?
  1. Decomposers recycle nutrients that keep the flow of energy going.
  2. Decomposers provide the base of all energy production in the food web.
  3. Decomposers are responsible for keeping the numbers of herbivores in check.
  4. Decomposers prevent new species from coming into the system.
Grade 10 Conservation and Biodiversity
The variety of life across the biosphere is
  1. biodiversity.
  2. genomics.
  3. homeostasis.
  4. ecology.
Grade 10 Communities, Populations, and Ecosystems
You observe two male deer fighting over the same food resource. This interaction is an example of                 .
  1. competition
  2. symbiosis
  3. predation
  4. all of the above
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