STAAR EOC Evolution

A structure that is no longer used by an organism. Remnants of what ancestors had.

• Analagous structure

• Homologous structure

• Vestigial structure

• Adaptation

Answer explanation

A vestigial structure is a structure that is no longer used by an organism and is remnants of what ancestors had.

Structures that indicate shared ancestry ; look similar anatomically

• Analagous structure

• Homologous structure

• Vestigial structure

• Adaptation

Answer explanation

Homologous structures indicate shared ancestry and look similar anatomically, making them the correct choice in this context.

Tags

NGSS.MS-LS4-2

Structures that do not indicate shared ancestry ; structures do same functions

• Analagous structure

• Homologous structure

• Vestigial structure

• Adaptation

Answer explanation

Analagous structures are those that do not indicate shared ancestry but perform the same functions.

Tags

NGSS.MS-LS4-2

The range of different inherited traits in a species.

• Evolution

• Genetic diversity

• Common ancestor

• Fitness

Answer explanation

The correct answer is genetic diversity because it refers to the range of different inherited traits within a species, highlighting the variation in genes that contribute to the overall diversity.

Tags

NGSS.MS-LS4-4

What is the term used to describe the movement of alleles between populations?

• Genetic drift

• Gene flow

• Natural selection

• Mutation

The diagram shows light- and dark-colored beetles that live on a tree.

Which result is most likely to occur to the beetle population due to predation over time?

• The number of light-colored beetles in the population will increase.

• There will be more dark-colored beetles than light-colored beetles.

• The number of light-colored beetles will decrease.

• The dark-colored beetles will move to a different type of tree.

Answer explanation

The number of light-colored beetles in the population will increase as they are less likely to be preyed upon due to their color, leading to a higher survival rate.

Tags

NGSS.MS-LS2-4

A trait that makes an organism better suited for their environment.

• Analagous structure

• Homologous structure

• Vestigial structure

• Adaptation

Answer explanation

The correct choice is 'Adaptation' because it refers to a trait that helps an organism better survive in its environment.

Tags

NGSS.MS-LS4-4

The gradual change in species over time is...

• Evolution

• Nucleotide 

• Adaptation

• Natural Selection

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

What is the human most closely related to?

• Fish

• mouse

• Salamander

• Human

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Where is the alligator and T. rex's common ancestor?

• Point A

• Point B

• Point C

• Point D

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2