Biodiversity and Trophic Cascades Quick Diagnostic Assessment

Which of the following best describes biodiversity?

• The number of species in an ecosystem

• The variety of life forms and habitats in an ecosystem

• The balance between producers and consumers in an ecosystem

• The ability of an ecosystem to support human needs

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Why is biodiversity important for maintaining healthy ecosystems?

• It increases the aesthetic value of an ecosystem

• It enhances the resilience and stability of an ecosystem

• It decreases the competition among species in an ecosystem

• It promotes the growth of invasive species in an ecosystem

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What is a trophic cascade?

• The movement of energy and nutrients through a food chain

• The process where one species benefits from another species' activities

• The sudden decline in population size of a top predator

• The propagation of changes in one trophic level to other levels in a food web

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How can changes in one species affect the entire food web?

• By increasing the genetic diversity of the entire ecosystem

• By altering the physical structure of the ecosystem

• By disrupting the balance of predator-prey interactions

• By reducing the overall productivity of the ecosystem

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What is the misconception regarding the importance of species in an ecosystem?

• All species have an equal impact on the overall functioning of an ecosystem

• Keystone species are more important than other species in an ecosystem

• Invasive species are always detrimental to the ecosystem

• Ecosystems can survive without any species present

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