Natural Selection and Species Conservation

The video covers natural selection, its mechanisms, and examples like giraffes and cheetahs. It explains extinction, endangered species, and their impact on resources. The role of gene and seed banks in preserving species is discussed, emphasizing the importance of biodiversity and genetic variation.

Who is credited with the idea of natural selection and variation?

• Jean-Baptiste Lamarck

• Charles Darwin

• Gregor Mendel

• Alfred Wallace

What did Darwin observe about the finches on different islands?

• They had different shaped beaks.

• They had different sized wings.

• They sang different songs.

• They had different colored feathers.

How does natural selection affect the characteristics of a species over generations?

• It makes them less competitive.

• It makes them weaker.

• It makes them more diverse.

• It makes them more suited to their environment.

Why are giraffes with longer necks more likely to survive?

• They can see predators from afar.

• They can swim better.

• They can reach higher leaves for food.

• They can run faster.

What is the main difference between an endangered species and an extinct species?

• Extinct species can still reproduce.

• Endangered species are not at risk.

• Extinct species have no living members.

• Endangered species are more numerous.

Which of the following is an example of an extinct species?

• Dodo

• Amur Leopard

• African Forest Elephant

• Black Rhino

How does the extinction of species affect human resources?

• It increases the availability of resources.

• It has no impact on human resources.

• It limits the availability of resources like medicines and fuel.

• It only affects animal resources.

What is the role of gene banks in conservation?

• To store money for conservation projects.

• To preserve genetic material for future use.

• To eliminate genetic diversity.

• To create new species.

How are plant genes typically stored in seed banks?

• In the form of plant tissues.

• In the form of seeds.

• In the form of DNA samples.

• In the form of dried leaves.

What is a potential benefit of using gene banks?

• They can eliminate the need for natural habitats.

• They can prevent all species from becoming extinct.

• They can increase the population of endangered species.

• They can help clone extinct species.