Unit 4 Speciation and Extinction

SELECT ALL THAT APPLY: Which of the following must be true in order for organisms to be considered the same species?

• They must be able to mate

• They must be able to produce viable offspring

• They must have structural similaries

• They must have the same bone structure

What happens when species produce too many offspring?

• Species share the limited resources 
• Species eat less so that all can survive
• Only those that are least fit can survive
• Only those that are best fit can survive

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NGSS.MS-LS2-4

NGSS.MS-LS2-1

When a population becomes divided by an event such as a new river forming, ____________ has occurred.

• Differentiation 
• Isolation
• Adaptation
• Separation

The climate of a certain area is cold, and snow is found on the ground most of the year. Equal numbers of two populations of rabbits are introduced into this climate by a group of scientists. One of the populations is brown and the other is white. Predict what will happen over several generations.

• There will be equal numbers of brown and white rabbits
• There will be more brown rabbits that white rabbits
• There will be more white rabbits than brown rabbits
• There is no way to predict what will happen to the rabbit population

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NGSS.MS-LS4-4

Members of a species can breed with other members of the same species.

• True

• False

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NGSS.HS-LS4-2

___ are mistakes in the DNA that cause variation within a species.

• mutations
• adaptations
• speciations
• isolations

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NGSS.MS-LS4-4

NGSS.MS-LS3-1

Organisms with the most beneficial traits will survive.  This is commonly known as ___.

• theory of evolution
• variations
  
• survival of the fittest
• ecosystems
  

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NGSS.MS-LS4-4

no longer in existence

• natural

• extinct

• species

• predator

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a group of organisms that share similar characteristics and can mate with each other to produce offspring

• natural

• organism

• biodiversity

• species

the many different types of life that exist in an environment

• biodiversity

• nutrients

• species

• fossil

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