cladograms and phylogeny

The bullfrog, Rana catesbeiana, is most closely related to the

• spotted chorus frog, Pseudacris clarki

• asian flying frog, Polypedates leucomystax

• northern leopard frog, Rana pipiens

• african bullfrog, Pyxicephalus adspersus

At what point in time did the species become carnivorous?

Why is it important to assign each organism a scientific name?

• Each scientific name applies to only one species, making it universally identifiable to scientists.

• Each scientific name allows scientists to better study the behavior of an organism.

• The scientific name allows scientists to develop common names for organisms.

• The scientific name describes how an individual looks relative to others of the same genus.

Based on the information provided, which two species are most closely related?

• Northern leopard frog and bullfrog

• Northern cricket frog and green treefrog

• Northern leopard frog and green treefrog

• Northern cricket frog and bullfrog

Place the labels where they go according to taxonomic classification.

f

d

e

g

h

i

j

c

b

a

family

phylum

order

kingdom

class

More Organisms

Domain

species

genus

Less Organisms

On the cladogram, which organism is the closest relative of the parrot?

• Frog

• Hare

• Caiman

• Parrot

According to this tree, which of these animal phyla are most closely related?

• Arthropoda & Mollusca

• Arthropoda & Chordata

• Chordata & Mollusca

When comparing the DNA of two different organisms, the more differences in the DNA base pairs the more-

• Closely related they are.

• Distantly related they are.

• It doesn't prove anything.

• They look alike.

Which letter represents the most recent common ancestor of sponges and mushrooms?

• A

• B

• C

• D

• E

According to this data, the unknown bacterial species is most closely related to: 

• Species I
• Species II
• Species III
• Species IV