Island Biogeography and Species Diversity

The video discusses island biogeography, a theory explaining how ecological relationships are influenced by island distribution. It covers species migration, factors affecting biodiversity, and the role of island size and distance. The video also explores specialization, speciation, and challenges faced by specialist species, using examples like Darwin's finches and the dodo bird.

What is the main focus of the theory of island biogeography?

• The cultural significance of islands

• The economic value of islands

• The distribution of species based on island characteristics

• The impact of human activities on islands

Which island is likely to have the highest biodiversity according to island biogeography?

• A small, distant island

• A small, nearby island

• A large, distant island

• A large, nearby island

What role does island size play in species migration success?

• Larger islands are less successful

• Smaller islands are more successful

• Larger islands provide more resources and habitat

• Island size has no impact

How does limited resources on islands affect species?

• It results in more specialist species and competition

• It has no significant impact on species

• It causes species to migrate back to the mainland

• It leads to more generalist species

How did Australia's isolation affect its species?

• It made species more vulnerable to predators

• It caused species to become extinct

• It resulted in no significant changes

• It led to the development of marsupial species

What is a potential problem for species on islands with limited resources?

• They face increased competition and speciation

• They become more adaptable

• They become less diverse

• They migrate to other islands

What is a key example of island biogeography involving finches?

• Finches developing different beak sizes based on available resources

• Finches evolving into marine animals

• Finches becoming extinct due to lack of food

• Finches migrating to the mainland

What happens to species diversity when islands have different resources?

• Species diversity remains the same

• Species diversity is unaffected

• Species diversity increases

• Species diversity decreases

What challenge do specialist species face when generalist species invade?

• They thrive and increase in number

• They adapt quickly to new conditions

• They struggle to compete and may decline

• They migrate to other islands

Why did the dodo bird become extinct?

• Because of competition with other birds

• Because of human hunting and lack of defenses

• Due to climate change

• Due to natural disasters