Cladogram Practice

Which species is a common ancestor for species B and D?

• C

• F

• G

• H

• K

Answer explanation

Trace back in time to find the common ancestor. (Shown in blue on the diagram.)

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Using the diagram, is organism 4 MORE closely related to organism 3 or 5?

• 3

• 5

Tags

NGSS.MS-LS4-2

According to the diagram, what was the last common ancestor of organisms 2 and 3?

• A

• B

• C

• D

Tags

NGSS.MS-LS4-2

Each node on a cladogram represents...

• the last point at which two groups shared a common ancestor.

• the point at which one or more species became extinct.

• the most recent point at which a trait was lost in a certain clade.

• the point at which two clades joined and became monophyletic.

Tags

NGSS.HS-LS4-1

Based on the cladogram, what trait was last developed?

• Opposable thumbs

• lungs

• claws / nails

• fur / mammory glands

Tags

NGSS.MS-LS4-2

Which species are extinct? (Check all that apply)

• Asian elephant

• Mammoth

• Mastadon

• Stellar's sea cow

• Dugong

Answer explanation

Mammonth, mastadon, and Stellar's sea cow do not continue to present time.

Tags

NGSS.MS-LS4-1

Which two living organisms are most closely related?

• A and B

• B and C

• C and D

• B and D

• A and D

Answer explanation

B and C share the most recent common ancestor, F.

Tags

NGSS.MS-LS4-2

Are humans related to tuna?

• yes

• no

Answer explanation

All living things are related.

Tags

NGSS.MS-LS4-2

Of the choices listed, which species is the oldest?

• H

• D

• C

• A

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which trait (adaptation) was developed most recently?

• tetrapod limbs

• feathers

• amnion

• They developed at the same time

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2