APES Unit 2 Review

What is the relationship between an island's distance from the mainland and its biodiversity?

• Islands further from the mainland tend to have a higher level of biodiversity.

• Islands closer to the mainland tend to have a higher level of biodiversity compared to those that are further away.

• There is no relationship between an island's distance from the mainland and its biodiversity.

• Islands have the same level of biodiversity regardless of their distance from the mainland.

What is another term for 'top predator' in a food web?

• Apex predator

• Secondary consumer

• Primary producer

• Tertiary consumer

What is primary succession?

• The development of an ecosystem in an area where no soil exists, such as after a volcanic eruption.

• The gradual process of change in an ecosystem over time.

• The introduction of new species to an existing ecosystem.

• The recovery of an ecosystem after a disturbance.

Define ecological succession.

• The process by which ecosystems change and develop over time.

• A method of classifying different species in an ecosystem.

• The study of interactions between organisms and their environment.

• A technique for restoring damaged ecosystems.

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What is the significance of keystone species in an ecosystem?

• Keystone species are the most abundant species in an ecosystem.

• Keystone species have a disproportionately large effect on their environment relative to their abundance.

• Keystone species are always predators in their ecosystems.

• Keystone species are those that are at the top of the food chain.

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How does temperature affect ecological tolerance?

• Different species have varying temperature ranges in which they can survive and thrive.

• All species can survive in any temperature as long as they have food.

• Temperature has no effect on the survival of species.

• Species can only thrive in extreme temperatures.

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What level of ecological succession occurs when a community is stable with little to no change?

• Transitional community

• Climax community

• Pioneer community

• Seral community

What is an example of an apex predator?

• A lion in a savanna ecosystem.

• A rabbit in a forest ecosystem.

• A deer in a grassland ecosystem.

• A fish in a coral reef.

What is secondary succession?

• The recovery of an ecosystem after a disturbance that does not destroy the soil, such as after a wildfire.

• The initial colonization of barren land by organisms.

• The process of soil formation from rock over time.

• The complete destruction of an ecosystem leading to a new one.

What role do decomposers play in an ecosystem?

• Decomposers break down dead organic matter, returning nutrients to the soil.

• Decomposers produce energy through photosynthesis.

• Decomposers compete with plants for sunlight and nutrients.

• Decomposers create new organic matter from inorganic substances.

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