Classification Cladogram

According to this phylogenetic tree, which creature is the least related out of all pictured?

• Fish

• Frog

• Salamander

• Human

Tags

Phylogenetic tree

What number is the common ancestor of C and D

• 1

• 2

• 4

Tags

NGSS.MS-LS4-2

What trait separates sharks from ray-finned fish?

• Vertebrae

• Bony skeleton

• Four limbs

• None

Tags

NGSS.MS-LS4-2

A clade contains

• all the organisms with similar appearances

• organisms living within the same ecosystem

• an ancestral species and all the organisms that came before it

• an ancestral species and all its descendants

What do the nodes (the black dots) represent?

• Common Ancestor

• Modern Species

• Extant Species

• Extinct Species

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Cladistics is a method of classification based on what principle?

• The geographical distribution of species.

• The chronological order of species emergence.

• The common ancestry and evolutionary relationships between organisms.

• The physical similarities among organisms without regard to their evolutionary relationships.

Tags

NGSS.MS-LS4-2

According to the phylogenic tree which organism is LEAST closely related?

• A

• B

• C

• D

• E

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

In cladistics, what is a "clade"?

• A group of organisms that includes an ancestor and all its descendants.

• A collection of species that share a common habitat.

• A classification based solely on the number of shared physical characteristics.

• A method for estimating the age of fossils.

Which of the following statements about a phylogenetic tree is FALSE?

• It represents hypotheses about evolutionary relationships.

• It shows the exact time when each species evolved.

• It can be revised based on new evidence.

• It includes branches that represent common ancestors.

If two organisms are in the same phylum, they must also be in the same

• class

• species

• family

• kingdom