Unit 4 Quiz: Biodiversity and Conservation

What does biodiversity refer to?

• The number of humans in an ecosystem

• The variety of life across all levels of biological organization

• The number of environmental laws in place

• The rate of extinction in a region

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Which of the following is a benefit of biodiversity?

• Decreases genetic variation in crops

• Makes ecosystems more fragile

• Supports ecosystem stability and resilience

• Increases dependence on single species

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What is a biodiversity hotspot?

• A region with very little species diversity

• An urban area with high pollution levels

• An area with significant levels of biodiversity that is under threat

• A protected area with no human access

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Which human activity is the leading cause of biodiversity loss?

• Composting

• Wildlife photography

• Habitat destruction

• Ecotourism

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What is the main goal of conservation biology?

• To remove predators from ecosystems

• To study extinct species for museum exhibits

• To understand and protect biodiversity

• To genetically engineer new species

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What does the Endangered Species Act do?

• Permits trade of rare animals

• Protects endangered and threatened species and their habitats

• Encourages overhunting to control populations

• Provides funding to zoos for entertainment purposes

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What is an invasive species?

• A native species that helps restore balance in an ecosystem

• A species that enters a new ecosystem and causes harm to native species

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Which of the following is an example of in-situ conservation?

• Protecting wildlife in a national park

• Breeding animals in zoos

• Genetic modification in labs

• Relocating species to other continents

What role do keystone species play in ecosystems?

• They have no effect on the ecosystem

• They serve as the largest predators

• Their presence has a disproportionately large impact on ecosystem structure and function

• They always dominate by population size

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How does climate change threaten biodiversity?

• It increases habitat connectivity

• It reduces temperatures globally, helping species thrive

• It alters habitats and life cycles, making survival more difficult for many species

• It causes species to reproduce more rapidly

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