Evolution Unit Review

Which of the following explanations BEST explains how the first finch from the image changed over time?

• The population of finches had genetic variation. The variation for thicker beaks was made the most fit birds. Through natural selection the finches evolved over time to have thicker beaks.

• The finches needed to have thicker beaks to eat nuts. They worked to grow thicker beaks in order to be able to eat the available food.

• Humans saw the thicker beaks and decided to help the birds by providing nuts to eat. Since nuts were being given to them, the birds with thicker beaks eat more.

• The thinner beaks were a better fit for the environment because they were better for eating insects, so the thinner beaked birds survived and reproduced.

Tags

NGSS.MS-LS4-4

A population of lizards lives in a desert. At the start of the summer, 80% of the population are tan lizards, and the remaining 20% of the population are black lizards. A geologic event occurs turning the sand much darker. It will take many years for the sand to return to a typical color.

Which prediction BEST estimates the expected percent of brown and black lizards in the population after several generations?

• 20% black and 80% tan

• 0% black and 100% tan

• 75% black and 25% tan

• 100% black and 0% tan

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NGSS.MS-LS2-4

NGSS.MS-LS4-4

Pablo is trying to determine if the reason the birds near his house are a different color now than when his grandpa was young is because of natural or artificial selection. What kinds of questions should he ask?

• Is their color an acquired trait?

• Did the birds choose to be a different color?

• Did the change in color help the birds survive and reproduce?

• Was the change in color chosen by humans?

Tags

NGSS.MS-LS4-4

Based on this image, what is one thing you can tell has changed over the many years?

• The climate became much warmer

• The water levels rose higher each year

• The environment never changed

• The water levels went down over time.

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NGSS.MS-ESS1-4

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

True or False: Evolution can occur without genetic variation

• True

• False

Tags

NGSS.MS-LS4-4