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Ninth Grade (Grade 9) Conservation and Biodiversity Questions

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Grade 9 Conservation and Biodiversity
If fish reproduce at a slower rate than the rate at which they are caught, how will their population change?
  1. It will decrease.
  2. The fish will swim to other bodies of water.
  3. It will not change.
  4. It will increase dramatically.
Grade 9 Conservation and Biodiversity
Which description characterizes a stable ecosystem?
  1. one type of organism
  2. two types of organisms
  3. at least one type of plant and one type of animal
  4. a wide variety of organisms
Grade 9 Conservation and Biodiversity
A species that impacts the survival rates of other species in an ecosystem is a(n)
  1. endangered species.
  2. keystone species.
  3. niche species.
  4. extinct species.
Grade 9 Conservation and Biodiversity
Grade 9 Conservation and Biodiversity
Grade 9 Conservation and Biodiversity
What is the term for the variety in the organisms within an ecosystem?
  1. renewable resource
  2. biodiversity
  3. population
  4. ecology
Grade 9 Conservation and Biodiversity
In an ecosystem, how is biodiversity changing with the size of the region itself?
  1. As the size of the region increases, biodiversity decreases.
  2. As the size of the region increases, biodiversity also increases.
  3. As the size of the region increases, biodiversity fluctuates, both increasing and decreasing.
  4. As the size of the region increases, biodiversity disappears completely.
Grade 9 Conservation and Biodiversity
Habitat destruction can result in the loss of
  1. species.
  2. air.
  3. energy.
  4. land.
Grade 9 Conservation and Biodiversity
Over the last few hundreds of years, the number of extinct species on Earth has
  1. decreased slightly.
  2. decreased dramatically.
  3. increased dramatically.
  4. increased slightly.
Grade 9 Conservation and Biodiversity
The number of distinct species in a region is known as its
  1. climate.
  2. habitat fragmentation.
  3. biodiversity.
  4. niche diversity.
Grade 9 Conservation and Biodiversity
Which factor will NOT affect a region's biodiversity?
  1. climate
  2. genes
  3. area
  4. diversity of niches
Grade 9 Conservation and Biodiversity
The deforestation of specific trees that leaves a variety of tree sizes and species standing is
  1. clear cutting.
  2. certified cutting.
  3. selective cutting.
  4. patch cutting.
Grade 9 Conservation and Biodiversity
Grade 9 Conservation and Biodiversity
The loss of a natural habitat, often also resulting in a loss of biodiversity, is
  1. poaching.
  2. habitat destruction.
  3. habitat fragmentation.
  4. pollution.
Grade 9 Conservation and Biodiversity
Grade 9 Conservation and Biodiversity
Which is NOT a potential threat or danger to biodiversity?
  1. exotic species
  2. gene pool diversity
  3. habitat destruction
  4. pollution
Grade 9 Conservation and Biodiversity
Which practice involves rearing fish and other aquatic organisms for the purposes of food?
  1. selective cutting
  2. sustainable yielding
  3. overfishing
  4. aquaculture
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