APES Unit 2 Midterm Review

What does species richness refer to in an ecosystem?

• Number of genetic variations

• Number of different species

• Number of individuals in a species

• Number of habitats

Why is genetic diversity important for a population?

• It increases the population size

• It allows better response to environmental stressors

• It helps in finding mates easily

• It makes the population look more attractive

What are the categories of ecosystem services?

• Hunting, gathering, farming, and fishing

• Mining, manufacturing, transportation, and construction

• Feeding, breeding, protection, and sheltering

• Provisioning, regulating, cultural, and supporting

What is island biogeography?

• Study of the cultural practices of island inhabitants

• Study of the weather patterns on islands

• Study of the geological formations of islands

• Study of the ecological relationships and distribution of organisms on islands

What is the main reason for the evolution of specialist species on islands?

• Abundance of resources on most islands

• Limited resources on most islands

• Lack of predators on most islands

• High competition from other species

What does ecological tolerance refer to?

• The ability to tolerate extreme noise levels

• The range of conditions an organism can endure before injury or death

• The ability to tolerate extreme pressure

• The ability to tolerate extreme temperatures

What is the main consequence of loss of habitat?

• Increase in specialist species

• Increase in generalist species

• Reduction in species with large territorial requirements

• Increase in genetic diversity

What is the main reason for large swathes of habitat changes?

• Climate change

• Human activities

• Natural disasters

• Species migration

What is the main reason for wildlife engaging in migration?

• To respond to natural disruptions

• To find better food sources

• To escape predators

• To find mates

What are the two main types of ecological succession?

• Early and late

• Primary and secondary

• Fast and slow

• Tertiary and quaternary