Island Biogeography Concepts Assessment

The video tutorial covers the theory of island biogeography, explaining how islands can be both traditional landmasses and fragmented habitats. It discusses ecological relationships, community structures, and the impact of island size and distance from the mainland on species diversity. The tutorial also covers endemic and invasive species, highlighting the differences between specialist and generalist species. Evolution and adaptive radiation on islands are explored, using the Galapagos finches as an example. The lesson concludes with practice questions for students.

What is an example of a non-traditional island as described in the theory of Island Biogeography?

• A forested area surrounded by farmland

• A mountain peak

• A desert in the middle of a continent

• A small island in the Pacific Ocean

What happens to immigration and extinction rates as an island reaches a sustainable point?

• Both rates increase indefinitely

• Immigration decreases and extinction increases

• Both rates level off

• Immigration increases and extinction decreases

Which of the following is true about larger islands according to Island Biogeography?

• They support more species due to more available niches

• They have less ecosystem diversity

• They are more prone to extinction events

• They support fewer species due to limited resources

Why do islands closer to the mainland support more species?

• They are larger in size

• They have fewer resources

• They are easier to reach for colonizing organisms

• They have more predators

What is a characteristic of endemic species on islands?

• They are highly adaptable to new environments

• They are generalist species

• They are naturally found only on that island

• They have a broad ecological niche

Which of the following is a generalist species?

• Raccoon

• Panda bear

• Kiwi bird

• Koala

What is the main reason natural selection occurs on islands?

• Lack of predators

• Limited space and resources

• Abundance of resources

• Stable environmental conditions

What is adaptive radiation?

• The spread of a single species into different niches

• The process of species becoming extinct

• The migration of species from the mainland

• The reduction of genetic diversity

Which of the following best describes the Galapagos finches?

• They all have the same beak shape

• They are not affected by natural selection

• They are all generalist species

• They evolved different beaks to fit various food sources

What is the relationship between island size and species richness?

• No relationship

• Direct relationship

• Random relationship

• Inverse relationship