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Modern Classifiction

Total questions: 28

Worksheet time: 16mins

Name
Class
Date
1.
Use the phylogenetic tree.  Which hypothetical organism is the most recent ancestor for Organisms A and G?
a)
1
b)
2
c)
3
d)
4
2.
What can a classification system show about an organism?
a)
absolute age of an organism
b)
what an organism is made of
c)
its relationship to other organisms
d)
which organisms are the strongest
3.
Panthera leo, the scientific name for a lion, is a member of which species?
a)
leo
b)
Animalia
c)
Panthera
d)
mammalia
4.
Which taxonomic category is higher than the others?
a)
class
b)
genus
c)
order
d)
phylum
5.
An organism identified with binomial nomenclature includes which two taxa?
a)
class and order
b)
family and genus
c)
genus and species
d)
kingdom and phylum
6.
Canis lupus, the scientific name for a wolf, is in which genus?
a)
Canis
b)
lupus
c)
Animalia
d)
mammalia
7.
What role did Linnaeus play in classification of organisms?
a)
He classified all life into plants and animals.
b)
He classified all life by where organisms lived.
c)
He started naming organisms using binomial nomenclature.
d)
He utilized DNA technology to form the modern system of naming.
8.
Which two organisms are least closely related?
a)
two organisms from the same kingdom
b)
two organisms from the same order
c)
two organisms from the same family
d)
two organisms from the same genus
9.
Which is used most to determine a true common ancestor for a group of organisms?
a)
karyotype
b)
dichotomous key
c)
phylogenetic tree
d)
mRNA codon chart
10.
How would a dichotomous key be used?
a)
by inserting it into a chamber at a 45 degree angle
b)
by observing specimens and then answering questions about them
c)
by comparing the colors on a strip to the colors obtained during testing
d)
by analyzing a gel agar and recording the distance each fragment had traveled
11.
Examine the phylogenetic tree.
Which two organisms are most closely related?
a)
wolves and sharks
b)
starfish and sharks
c)
protists and sharks
d)
gorillas and sharks
12.
Examine the dichotomous key.
What features does a Platyspiza have?
a)
stout and heavy beak with a curved lower beak
b)
long, slender beak with a flat and straight lower beak
c)
flat and straight beak with a bend in the lower edge of the upper beak
d)
long and slender beak with the lower edge of the upper beak being flat
13.
What goal does Taxonomy accomplish?
a)
explains the differences between living organisms
b)
classifies living organisms into groups
c)
predicts the types of undiscovered organisms
d)
establishes relationships of organisms with their habitat
14.
Which of the following shows the taxa in the correct order?
a)
kingdom-phylum-order-class-family-genus-species
b)
kingdom-class-order-family-phylum-genus-species
c)
kingdom-phylum-class-order-family-genus-species
d)
kingdom-phylum-family-order-class-genus-species
15.

The most important difference between classification during the time of Linnaeus and current classification is that organisms are now grouped according to their

a)

fossil relationships.

b)

size relationships.

c)

ecological relationships.

d)

evolutionary relationships.

16.

A diagram that shows evolutionary relationships among species is called a

a)

cladogram

b)

derived characters

c)

monophyletic

d)

phylogeny

17.

Lions and ocelots have retractable claws, but foxes do not. We can conclude that

a)

lions and foxes are more closely related than lions and ocelots.

b)

lions and ocelots are more closely related than lions and foxes.

c)

the unretractable fox claw is a derived characteristic.

d)

foxes are completely unrelated to lions or ocelots.

18.

A clade contains

a)

all organisms with similar appearances.

b)

organisms living within the same ecosystem.

c)

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

d)

an ancestral species and all its descendants.

19.

If two species have similar DNA sequences but different observable characteristics,

a)

they are not closely related.

b)

scientists need to re-examine the DNA evidence.

c)

the species are more closely related than their appearances imply.

d)

they could not have shared a recent common ancestor.

20.

The splitting point on a cladogram is considered a...

a)

clade

b)

derived character

c)

root

d)

node

21.

A trait that arose in the most recent common ancestor of a group and was passed on to its descendants

a)

clade

b)

cladogram

c)

derived characters

d)

node

22.

The goal of modern classification is to....

a)

understand the relationships among certain living organisms

b)

understand the relationships among all living things on Earth

c)

understand the similarities and differences of organisms

d)

understanding the similarities of biogeographical habitats

23.

Which groups share derived character 1

a)

A and B

b)

A and C

c)

B and C

d)

A, B and C

24.

Which descendant doesn't share any derived characters?

a)

A

b)

B

c)

C

d)

None they all share 1 derived character

25.

Which of the following groups shares the most recent common ancestor?

a)

Mosses and ferns

b)

cone-bearing plants and ferns

c)

cone-bearing plants and flowering plants

d)

Mosses and flowering plants

26.

Which derived character appeared first during the course of the plants' evolution

a)

embryo

b)

vascular tissue

c)

seeds

d)

flowers

27.

Which derived character most recently appeared during the plants' evolution?

a)

seeds

b)

flowers

c)

vascular tissue

d)

embryo

28.

Which derived character most recently appeared during the plants' evolution?

a)

seeds

b)

flowers

c)

vascular tissue

d)

embryo

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