Bell Ringer: Evidence of Evolution

The existence of similar structures in different species that perform different functions, suggests a common ancestry. What are these structures called?

• analogous structures

• homologous structures

• vestigial structures

• fossil structures

Tags

NGSS.MS-LS4-2

Study of embryos of various organisms to show a common ancestor because of similarities in development

• natural selection
• embryology
• speciation
• evolution

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

How do fossils provide evidence that evolution has happened on Earth?

• Fossils show how the sizes of certain animals has changed drastically over millions of years
• Fossils show that some species have gone extinct
• Fossils show how life forms present today are different than those from the past
• Different sedimentary rock layers provide evidence for how the environment has changed over time

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

Vestigial structures

• structures that perform a similar function but are not similar in origin

• remnants of once-important structures that have slowly lost all or most of their function

• features found in different organisms that share structural similarities but may have very different functions

• preserved remains of an organism

Tags

NGSS.MS-LS4-2

The youngest layer is (a)   .

• 1
• 2
• 3
• 4

Tags

NGSS.MS-ESS1-4

The process that results in the adaptation of an organism to its environment

• Photosynthesis 

• Respiration 

• Evolution 

• Digestion 

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4