Ecological Impact and Energy Flow Quiz

How does primary ecological succession differ from secondary succession in terms of species diversity and population recovery after a natural disaster?

• Primary succession occurs faster and results in higher species diversity than secondary succession.

• Primary succession starts with bare rock and no soil, while secondary succession starts with soil already present.

• Secondary succession leads to less stable ecosystems compared to primary succession.

• Secondary succession does not involve pioneer species.

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Explain how biodiversity contributes to the stability of an ecosystem when faced with environmental changes.

• Biodiversity decreases the resilience of an ecosystem to changes.

• High biodiversity ensures that some species can adapt and survive changes, maintaining ecosystem functions.

• Biodiversity has no impact on ecosystem stability.

• Low biodiversity increases the chances of ecosystem survival.

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Analyze the impact of agricultural runoff on groundwater quality in a watershed.

• It has no significant impact on groundwater quality.

• It can lead to contamination of groundwater with nitrates and pesticides.

• It improves groundwater quality by adding nutrients.

• It only affects surface water, not groundwater.

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Describe how human activities such as overfishing and pollution affect ocean systems.

• They have no significant impact on ocean systems.

• They enhance the biodiversity of ocean systems.

• They can lead to the depletion of fish populations and degradation of marine habitats.

• They only affect the ocean surface, not the deeper layers.

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Diagram the flow of energy in a simple food chain and explain why energy decreases at each trophic level.

• Energy increases at each trophic level due to energy accumulation.

• Energy decreases because it is lost as heat and used for metabolic processes.

• Energy remains constant across trophic levels.

• Energy decreases because organisms at higher levels are less efficient.

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Evaluate the role of pioneer species in primary succession and their impact on species diversity.

• Pioneer species decrease species diversity by dominating the ecosystem.

• Pioneer species prepare the environment for other species, increasing diversity over time.

• Pioneer species have no impact on species diversity.

• Pioneer species are only found in secondary succession.

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Discuss how the loss of a keystone species might affect the biodiversity and stability of an ecosystem.

• The loss would have no effect on the ecosystem.

• The loss could lead to a decrease in biodiversity and destabilize the ecosystem.

• The loss would increase biodiversity by allowing other species to thrive.

• The loss would only affect the keystone species itself.

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Analyze how urban development impacts the natural flow of surface water in a watershed.

• Urban development has no impact on surface water flow.

• It can increase surface runoff and reduce groundwater recharge.

• It decreases surface runoff and increases groundwater recharge.

• It only affects groundwater, not surface water.

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Explain the consequences of plastic pollution on ocean systems and marine life.

• Plastic pollution has no significant impact on ocean systems.

• It can lead to ingestion and entanglement of marine life, disrupting food chains.

• It benefits marine life by providing new habitats.

• It only affects the ocean surface, not the deeper layers.

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Describe the energy transfer in an energy pyramid and why top predators have less energy available to them.

• Top predators have more energy because they consume more organisms.

• Energy decreases at each level due to energy loss as heat and metabolic processes.

• Energy remains constant across all levels.

• Top predators have less energy because they are less efficient.

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