BIO 200 FINAL EXAM (PAST EXAMS)
QUESTIONS AND ANSWERS
Which of the following terms or structures is properly associated only with animals?
a. tissues
b. clustered Hox genes
c. autotrophy
d. sexual reproduction
e. cell wall - Correct Answers -b. clustered Hox genes
Cephalization is primarily associated with...
a. adaptation to dark environments
b. method of reproduction
c. fate of blastopore
d. type of digestive system
e. bilateral symmetry - Correct Answers -e. bilateral symmetry
You are trying to identify an organism. It is an animal, but it does not have nerve or
muscle tissue. It is neither diploblastic nor triploblastic. It is probably a...
a. round worm
b. sponge
c. hagfish
d. sea jelly
e. mollusc - Correct Answers -b. sponge
There is evidence that arthropods invaded land about 150 million years earlier than
vertebrates. Based on new arthropod phylogenic trees, this difference most clearly
implies that...
a. arthropods evolved before vertebrates did
b. living terrestrial arthropods are better adapted to terrestrial life than are living
terrestrial vertebrates
c. arthropods have had more time to co-evolve with land plants than have vertebrates
d. vertebrates evolved from arthropods
,e. ancestral arthropods must have been poorly adapted to aquatic life, thus experienced
a selective pressure to invade the land - Correct Answers -c. arthropods have had more
time to co-evolve with land plants than have vertebrates
In a collection of slides, photos, and documents, you find evidence of an adult animal
with bilateral symmetry and documentation that this animal's gastrula has a mesoderm
germ layer. This animal could be categorized as...
a. a deuterostome
b. triploblastic
c. a eucoelomate
d. the product of metamorphosis
e. highly cephalized - Correct Answers -b. triploblastic
Among invertebrates, arthropods are unique in possessing members that have...
a. segmented bodies
b. a ventral nerve cord
c. wings
d. open circulation
e. a cuticle - Correct Answers -c. wings
Evidence of which structure or characteristic would be most surprising to find among the
fossils of the pre-Cambrian fauna?
a. true tissues
b. hard parts
c. bilateral symmetry
d. cephalization
e. embryos - Correct Answers -b. hard parts
The most ancient branch point in animal phylogeny is between having...
a. true tissues or no tissues
b. a well-define head or no head
c. radial or bilateral symmetry
d. diploblastic or triploblastic embryos
e. a body cavity or no body cavity - Correct Answers -a. true tissues or no tissues
What was the adaptive trait of Gnathostomes that allowed for mobile predation?
a. breathe through their skin
b. four well-developed limbs
c. swim bladders
d. hollow bones
e. jaws - Correct Answers -e. jaws
, A student encounters an animal embryo at the eight-cell stage. The four smaller cells
that comprise one hemisphere of the embryo seem to be rotated 45 degrees and lie in
the grooves between larger, underlying cells (spiral cleavage). The embryo may
potentially develop into a/n...
a. bee
b. hagfish
c. sea star
d. ostrich
e. flat worm - Correct Answers -e. flat worm
Acoela is a group characterized as acoelomates, which means that these organisms...
a. have chitinous cuticles
b. have segmentation
c. have no body cavity
d. are deuterostomes
e. have radial symmetry - Correct Answers -c. have no body cavity
Which of the following do all eukaryotes share?
a. cell walls made of cellulose
b. chloroplasts
c. alternation of generations
d. heterotrophy
e. none of the above - Correct Answers -e. none of the above
The traditional three or five kingdom phylogenic classifications of life has been modified
with a three domain system because there are...
a. 3 fundamental mechanisms of intracellular organization
b. 3 different cell division processes
c. 3 fundamental layers
d. 3 fundamental mechanisms of metabolism: fermentation, glycolysis, and
photosynthesis - Correct Answers -a. 3 fundamental mechanisms of intracellular
organization
Which of the following about Prokaryotes is true?
a. they cannot adapt to changing conditions
b. they demonstrate a wide variety of metabolic abilities
c. all store their genetic material within a nucleus
d. prokaryotes are not considered living organisms
e. all require a source of organic carbon for their energy and matter - Correct Answers -
b. they demonstrate a wide variety of metabolic abilities
QUESTIONS AND ANSWERS
Which of the following terms or structures is properly associated only with animals?
a. tissues
b. clustered Hox genes
c. autotrophy
d. sexual reproduction
e. cell wall - Correct Answers -b. clustered Hox genes
Cephalization is primarily associated with...
a. adaptation to dark environments
b. method of reproduction
c. fate of blastopore
d. type of digestive system
e. bilateral symmetry - Correct Answers -e. bilateral symmetry
You are trying to identify an organism. It is an animal, but it does not have nerve or
muscle tissue. It is neither diploblastic nor triploblastic. It is probably a...
a. round worm
b. sponge
c. hagfish
d. sea jelly
e. mollusc - Correct Answers -b. sponge
There is evidence that arthropods invaded land about 150 million years earlier than
vertebrates. Based on new arthropod phylogenic trees, this difference most clearly
implies that...
a. arthropods evolved before vertebrates did
b. living terrestrial arthropods are better adapted to terrestrial life than are living
terrestrial vertebrates
c. arthropods have had more time to co-evolve with land plants than have vertebrates
d. vertebrates evolved from arthropods
,e. ancestral arthropods must have been poorly adapted to aquatic life, thus experienced
a selective pressure to invade the land - Correct Answers -c. arthropods have had more
time to co-evolve with land plants than have vertebrates
In a collection of slides, photos, and documents, you find evidence of an adult animal
with bilateral symmetry and documentation that this animal's gastrula has a mesoderm
germ layer. This animal could be categorized as...
a. a deuterostome
b. triploblastic
c. a eucoelomate
d. the product of metamorphosis
e. highly cephalized - Correct Answers -b. triploblastic
Among invertebrates, arthropods are unique in possessing members that have...
a. segmented bodies
b. a ventral nerve cord
c. wings
d. open circulation
e. a cuticle - Correct Answers -c. wings
Evidence of which structure or characteristic would be most surprising to find among the
fossils of the pre-Cambrian fauna?
a. true tissues
b. hard parts
c. bilateral symmetry
d. cephalization
e. embryos - Correct Answers -b. hard parts
The most ancient branch point in animal phylogeny is between having...
a. true tissues or no tissues
b. a well-define head or no head
c. radial or bilateral symmetry
d. diploblastic or triploblastic embryos
e. a body cavity or no body cavity - Correct Answers -a. true tissues or no tissues
What was the adaptive trait of Gnathostomes that allowed for mobile predation?
a. breathe through their skin
b. four well-developed limbs
c. swim bladders
d. hollow bones
e. jaws - Correct Answers -e. jaws
, A student encounters an animal embryo at the eight-cell stage. The four smaller cells
that comprise one hemisphere of the embryo seem to be rotated 45 degrees and lie in
the grooves between larger, underlying cells (spiral cleavage). The embryo may
potentially develop into a/n...
a. bee
b. hagfish
c. sea star
d. ostrich
e. flat worm - Correct Answers -e. flat worm
Acoela is a group characterized as acoelomates, which means that these organisms...
a. have chitinous cuticles
b. have segmentation
c. have no body cavity
d. are deuterostomes
e. have radial symmetry - Correct Answers -c. have no body cavity
Which of the following do all eukaryotes share?
a. cell walls made of cellulose
b. chloroplasts
c. alternation of generations
d. heterotrophy
e. none of the above - Correct Answers -e. none of the above
The traditional three or five kingdom phylogenic classifications of life has been modified
with a three domain system because there are...
a. 3 fundamental mechanisms of intracellular organization
b. 3 different cell division processes
c. 3 fundamental layers
d. 3 fundamental mechanisms of metabolism: fermentation, glycolysis, and
photosynthesis - Correct Answers -a. 3 fundamental mechanisms of intracellular
organization
Which of the following about Prokaryotes is true?
a. they cannot adapt to changing conditions
b. they demonstrate a wide variety of metabolic abilities
c. all store their genetic material within a nucleus
d. prokaryotes are not considered living organisms
e. all require a source of organic carbon for their energy and matter - Correct Answers -
b. they demonstrate a wide variety of metabolic abilities
