3.1 Mastery Check

What is a species?

• A group of organisms that cannot reproduce

• A population of organisms that can interbreed and reproduce

• A single organism living in isolation

• A group of organisms that live in different habitats

How many species are estimated to exist on Earth?

• 1-5 million

• 5-30 million

• 30-50 million

• 50-100 million

What is the difference between an endangered species and a threatened species?

• Endangered species are not at risk of extinction

• Threatened species are already extinct

• Endangered species are in immediate jeopardy of extinction

• Threatened species are more at risk than endangered species

Tags

NGSS.HS-LS4-5

What causes speciation?

• Natural selection and adaptation to environments

• Lack of genetic diversity

• Overpopulation

• Climate change

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

What is interspecific competition?

• Competition within species

• Cooperation between species

• Isolation of species

Tags

NGSS.MS-LS2-2

What is the principle of competitive exclusion?

• Species can share unlimited resources

• Two species can compete for the same limited resources and both thrive

• One species will dominate and the other will have small populations that may move elsewhere

• Species can coexist without competition

What are the types of isolation that cause speciation?

• Behavioral, mechanical, temporal, geographic

• Physical, chemical, biological, ecological

• Genetic, environmental, social, cultural

• Climatic, oceanic, terrestrial, atmospheric

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

After a long time in isolation, Island fruit flies and mainland fruit flies meet. They do not produce viable eggs due to genetic differences. The flies have resulted in two seperate lineages due to:

• Gene Pool

• Genetic Drift

• Gene Frequency

• Speciation

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

NGSS.HS-LS4-5