NGSS.MS-LS4-2

The hind leg bones in a whale are examples of

• homologous structures
• analogous structures
• fossils
• vestigal structures

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NGSS.MS-LS4-2

When using a dichotomous key to identify organisms, what do we look at?

• physical features
• weather patterns
• environment
• diet

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NGSS.MS-LS4-2

The opossum and kangaroo both incubate their young in a pouch. This provides evidence that they---

• are descended from a common ancestor
• Have very similar skeletal structures
• belong to the same species
• must range great distances to eat

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NGSS.MS-LS4-2

Which of the following is an example of a vestigial structure?

• the wings of a red-tailed hawk
• the hind limbs of a house cat
• the fins of sharks
• the tailbone of a human

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NGSS.MS-LS4-2

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

• Point A
• Point B
• Point C
• Point D

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NGSS.MS-LS4-2

Structures that have the same function but did NOT come from a common ancestor:

• homologous structures

• analogous structures

• vestigial structures

• embryos

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NGSS.MS-LS4-2

Which of the following are homologous structures?

• whale flipper and bat wing

• legs on a beetle and legs on a cat

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NGSS.MS-LS4-2

What conclusion can be made about these four organisms?

• The four organisms have similar bones because they live in similar environments

• The four organisms have different ancestors since they live in different environments.

• The four organism have no connection to each other because they live in different ecosystems

• The four organisms have a common ancestor since they have the same number of bones in the same positions.

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NGSS.MS-LS4-2

Which of the following organisms are the most closely related? CHOOSE TWO

• 
• 
• 
• 

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NGSS.MS-LS4-2

Which of the following is the least closely related animal:
Gray Wolf: Canis lupus
Aardwolf: Proteles cristatus
Coyote: Canis latrans

• Coyote
• Aardwolf
• Gray Wolf
• Need more information on body characteristics

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NGSS.MS-LS4-2