Which structures below are analogous structures? 

• human arm & cat arm
• dog's nose & snake's tongue
• reptile foot & bird foot
• bat wing & mouse arm

Tags

NGSS.MS-LS4-2

Which structures below are vestigial structures? 

• mouse arm & bat wing
• human arm & bat wing
• wisdom teeth & an appendix
• dog's nose & snake's tongue

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

Which structures are homologous structures?

• human arm & cat arm
• dog's nose & snake's tongue
• wisdom teeth & an appendix
• dolphin fin & fish fin

Tags

NGSS.MS-LS4-2

Different in structure but share common job or function:

• Vestigial structures
• Analogous structures
• Homologous structures 

Similar in structure but are different in job or function: 

• Vestigial structures
• Analogous structures
• Homologous structures 

Non-functional structures now but once were used by ancestors 

• Vestigial structures
• Analogous structures
• Homologous structures 

Tags

NGSS.MS-LS4-2

Which one of these is an example of artificial selection?

• size of finches beaks
• length of tortoises's neck
• polar bear's fur color
• dog breeding

Tags

NGSS.MS-LS4-5

Which one of these is an example of natural selection? 

• size of finches beaks 
• dog breeding
• cattle breeding
• hybrid plants 

Tags

NGSS.MS-LS4-4

When more offspring are being produced, there is a competition of limited resources---this is known as:

• Struggle for Existence
• Survival of the Fittest
• Descent with Modification
• Adaptation

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

When only the fittest organisms survive & reproduce---this is known as: 

• Struggle for Existence
• Survival of the Fittest
• Descent with Modification
• Adaptation

Tags

NGSS.MS-LS4-4