Speciation and Extinction

What happened to the number of mammal species after the last mass extinction?

• Mammal populations increased dramatically.

• Mammal populations decreased dramatically.

• Mammal populations did not change.

• Mammal population went extinct during the mass extinction.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-1

Why were mammals so successful after the last mass extinction?

• They went exinct.

• They did not have a lot of competition.

• The dinosaurs still hunted them.

• They were only able to stay in their same habitats.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

How did mammals successfully diversify?

• Mammals only reproduced with other mammals in different habitats.

• Mammals changed their environment.

• Mammals adapted to their environment and evolved.

• Mammals have not diversified that much.

Tags

NGSS.MS-LS4-4

What is reproductive isolation?

• When a population is separated and chooses to not reproduce with other, similar populations.

• When a population is separated and cannot reproduce with other, similar populations.

• When a population decides not to reproduce, even though they could.

• When a population does not reproduce at all.

Tags

NGSS.HS-LS4-2

What is speciation?

• When a population becomes reproductively isolated and accumulated mutations that allow them to be successful in their environment.

• When a population becomes reproductively isolated and does not change at all, allowing them to be successful.

• When a population does not have a set habitat, but constantly migrates to different habitats.

• When a population does not mate, despite being able to.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

What happens to the flow of genes in a population when speciation occurs?

• The genes continue to flow within the population.

• The genes continue to mutate in exactly the same way in the entire population.

• The genes stop flowing through the population.

• The genes stop existing in the entire population.

Tags

NGSS.MS-LS4-4

The golden-cheeked warbler and the black-throated green warbler look nearly identical to each other. What type of information could be used to determine if the birds are separate species? (select all that apply)

• The birds breed with each other where their territories overlap.

• The birds show differences in mating songs and behaviors.

• The birds do not breed with each other where their territories overlap.

• The birds compete for food and nesting sites.

Tags

NGSS.MS-LS1-4

NGSS.MS-LS4-2

The steps to show how speciation happened for the warblers are in the wrong order. Put them in the right order:

1.The populations are exposed to different environmental factors.

2.The populations become reproductively isolated.

3.Ancestral populations are separated by a glacier.

4.Separated populations occupy different habitats.

• 1, 2, 3, 4

• 2, 1, 4, 3

• 4, 3, 2, 1

• 3, 4, 1, 2

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

The most recent estimated population size for the Indus river dolphin population is 1,100 individuals. If the minimum viable population (MVP) is much higher, what can you predict about the likelihood of the river dolphin's extinction?

• Extinction of this species is not likely.

• The dolphins are likely to go extinct within 40 generations.

• The river dolphins will likely diversify into two species.

• River dolphin conservation efforts are working.

Tags

NGSS.HS-LS4-5

_____________ are relatively recent cause of extinction.

• Geologic Events

• Human Activity

Tags

NGSS.MS-ESS3-4