Common Ancestry Review

What is a homologous structure?

• having a body part that has no known function

• similar structures in more than one organism because they evolved from a common ancestor

• a structure that evolved to help an organism survive in their environment

• similar structures that evolved independently in two living organisms to serve the same purpose

Tags

NGSS.MS-LS4-2

Which of the following best describes the variation seen in peppered moths?

• individual peppered moths can vary their color to camouflage

• there are multiple species of peppered moths each with different colors

• there is one species of peppered moths with two color variations

• pepper moths come in at least 12 different colors

Tags

NGSS.MS-LS4-4

In a meadow, there are two colors of cone flowers: Pink and yellow. The bees and other pollinators seem to be more attracted to the pink flower and visit the pink flowers more often than the yellow flowers. Over time there are more pink flowers in the meadow than yellow. What principle is at work here?

• speciation

• environmental pressure

• natural selection

• homologous structures

Tags

NGSS.MS-LS1-4

NGSS.MS-LS2-4

NGSS.MS-LS4-4

What is a vestigial structure?

• having a body part that has no known function

• similar structures in more than one organism because they evolved from a common ancestor

• a structure that evolved to help an organism survive in their environment

• similar structures that evolved independently in two living organisms to serve the same purpose

Tags

NGSS.MS-LS4-2

What is an adaptive structure?

• having a body part that has no known function

• similar structures in more than one organism because they evolved from a common ancestor

• a structure that evolved to help an organism survive in their environment

• similar structures that evolved independently in two living organisms to serve the same purpose

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

What is an analogous structure?

• having a body part that has no known function

• similar structures in more than one organism because they evolved from a common ancestor

• a structure that evolved to help an organism survive in their environment

• similar structures that evolved independently in two living organisms to serve the same purpose

Tags

NGSS.MS-LS4-2

Whales live in the ocean. They do not have legs, but they do have a pelvis with small leg bones attached to it. This is evidence that:

• Whales are not well adapted to ocean life.

• Whales do not have homologous structures

• Whales evolved from animals that once lived on land

• Whales evolved from some type of fish

Tags

NGSS.MS-LS4-2

What caused the extinction of the dinosaurs?

• An asteroid hit Earth causing a global climate event.

• A volcanic eruption in Serbia the size of the United States caused CO2 levels to rise creating global warming.

• Abundant plant life removed carbon dioxide (CO2 ) from the air, causing global cooling and glacier formation.

• Human's used an abundance of fossil fuels to emit CO2 gas into the air, causing the temperatures of the globe to rise.

Tags

NGSS.MS-LS4-1

What caused the Permian extinction?

• An asteroid hit Earth causing a global climate event.

• A volcanic eruption in Serbia the size of the United States caused CO2 levels to rise creating global warming.

• Abundant plant life removed carbon dioxide (CO2 ) from the air, causing global cooling and glacier formation.

• Human's used an abundance of fossil fuels to emit CO2 gas into the air, causing the temperatures of the globe to rise.

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS4-1

What percent of life was lost during the Permian extinction?

• 50%

• 96%

• 86%

• 4%

Tags

NGSS.MS-LS4-1