Unit 5: The History of the Evolution of People, Practice Test Part III
BIOL1104: Friday Evening Study Group Practice Test
March 27th, 2025
orifera are the simplest of all animals and the sister group to us all. They are considered to
P
be the sister group of all of metazoa. They are a member of parazoans, from the list below
indicate if each trait is parazoan or eumetazoan:
.
1 acking true tissue
L . P
a arazoan
2. Having a nervous system b. Eumetazoan
3. Symmetry
4. Totipotent Stem Cells
5. In the fossil record, early vertebrates show the gradual appearance of jaws from
previously jawless ancestors. Which living chordate group provides the best model for
studying the body plan of those ancestral jawless vertebrates, and why?
a. Ray-finned fishes because they show the most diverse jaws
b. Lancelets (Cephalochordates) because they have true jaws but no vertebrae
c. Tunicates because their adult form resembles jawless fish
d. Hagfish and LLampreys because they lack jaws but have vertebrate-like body
plans
6. A
researcher wanted to know what would happen if he removed one of the cells from an
embryonic Mollusc, what can be expected from him doing this?
a. The mollusc will not be able to mature and will stay in its pre-puberence state
b. The mollusc is more likely to split and have a genetically identical twin
c. The mollusc will not develop a part of its body-plan possibly leading it to die
before birth
d. The mollusc will be developmentally disadvantaged and will respond differently to
stimuli (in a negative way) compared to other members of its species
7. A
n engineer wants to create an eco-friendly submarine and decides to build it out of
biological materials. Which species should he model the submarine after to be able to
have the best control of its depth in the water?
a. Osteichthyes (Boney Fish) due to its evolution of primitive lungs into gas-filled
organs
b. Cartilaginous Fish, because they contain many highly efficient predators meaning
they can probably navigate the ocean very efficiently
c. Lobe-Finned Fish due to the support of bones in their fins that allow them to
change directions in the water efficiently
d. Tetrapods because they include humans and we are the best species
8. T
he transition of vertebrates from water to land required several key adaptations. Which
combination of features best illustrates this transition in early tetrapods?
a. Loss of limbs and return to an entirely aquatic lifestyle
b. Strong, lobed fins with internal bones and lungs capable of air breathing
c. Development of gills with increased surface area and a cartilaginous skeleton
d. Evolution of jaws specialized for filter feeding in open water
, BIOL1104: Friday Evening Study Group Practice Test
March 27th, 2025
9. A
population of early amniotes becomes isolated in a dry, inland environment with
unpredictable surface water. Over many generations, which evolutionary change would
most directly increase their reproductive success compared with their amphibian
ancestors?
a. Developing an amniotic egg with specialized membranes and a shell
b. Producing larger numbers of gametes released into water
c. Evolving larval stages that depend on aquatic habitats
d. Developing external fertilization of jelly-coated eggs
10.Indeterminant development, a feature of Deuterostomes, allows early cells to develop
into complete embryos. What does this mean for the evolution of Deuterostomes?
a. During development they have radial cleavage where the cells divide parallel or
perpendicular to the embryo axis which allows for structures like bones to be
created
b. During development if the original bastopore splits then two full offspring will be
born which is the explanation behind identical twins
c. The bastopore will become the anus and the mouth
d. During development they have spiral cleavage where the cells divide at oblique
angles allowing for the creation of connective tissues
1.The image to the left is a critical evolutionary
1
development. What is each part of the amniotic egg doing
for the embryo?
a. Amnion: ___________________________
b. Yolk Sac: __________________________
c. Allantois: ___________________________
d. Chorion: ___________________________
12.Why is it a critical evolutionary development?
______________________________________________
______________________________________________
______________________________________________
13.A researcher compares the origins of plastids in land plants and in some euglenids.
Which statement best describes the relationship of these plastids in terms of
evolutionary events?
a. Land plants obtained plastids by secondary endosymbiosis, whereas euglenids
obtained plastids by primary endosymbiosis.
b. Land plants obtained plastids by primary endosymbiosis, whereas euglenids
obtained plastids secondarily via engulfment of a green alga.
c. Both groups obtained their plastids by primary endosymbiosis of a
cyanobacterium within a heterotrophic host.
d. Land plants and euglenids share plastids from the same secondary
endosymbiotic event involving a red alga.
BIOL1104: Friday Evening Study Group Practice Test
March 27th, 2025
orifera are the simplest of all animals and the sister group to us all. They are considered to
P
be the sister group of all of metazoa. They are a member of parazoans, from the list below
indicate if each trait is parazoan or eumetazoan:
.
1 acking true tissue
L . P
a arazoan
2. Having a nervous system b. Eumetazoan
3. Symmetry
4. Totipotent Stem Cells
5. In the fossil record, early vertebrates show the gradual appearance of jaws from
previously jawless ancestors. Which living chordate group provides the best model for
studying the body plan of those ancestral jawless vertebrates, and why?
a. Ray-finned fishes because they show the most diverse jaws
b. Lancelets (Cephalochordates) because they have true jaws but no vertebrae
c. Tunicates because their adult form resembles jawless fish
d. Hagfish and LLampreys because they lack jaws but have vertebrate-like body
plans
6. A
researcher wanted to know what would happen if he removed one of the cells from an
embryonic Mollusc, what can be expected from him doing this?
a. The mollusc will not be able to mature and will stay in its pre-puberence state
b. The mollusc is more likely to split and have a genetically identical twin
c. The mollusc will not develop a part of its body-plan possibly leading it to die
before birth
d. The mollusc will be developmentally disadvantaged and will respond differently to
stimuli (in a negative way) compared to other members of its species
7. A
n engineer wants to create an eco-friendly submarine and decides to build it out of
biological materials. Which species should he model the submarine after to be able to
have the best control of its depth in the water?
a. Osteichthyes (Boney Fish) due to its evolution of primitive lungs into gas-filled
organs
b. Cartilaginous Fish, because they contain many highly efficient predators meaning
they can probably navigate the ocean very efficiently
c. Lobe-Finned Fish due to the support of bones in their fins that allow them to
change directions in the water efficiently
d. Tetrapods because they include humans and we are the best species
8. T
he transition of vertebrates from water to land required several key adaptations. Which
combination of features best illustrates this transition in early tetrapods?
a. Loss of limbs and return to an entirely aquatic lifestyle
b. Strong, lobed fins with internal bones and lungs capable of air breathing
c. Development of gills with increased surface area and a cartilaginous skeleton
d. Evolution of jaws specialized for filter feeding in open water
, BIOL1104: Friday Evening Study Group Practice Test
March 27th, 2025
9. A
population of early amniotes becomes isolated in a dry, inland environment with
unpredictable surface water. Over many generations, which evolutionary change would
most directly increase their reproductive success compared with their amphibian
ancestors?
a. Developing an amniotic egg with specialized membranes and a shell
b. Producing larger numbers of gametes released into water
c. Evolving larval stages that depend on aquatic habitats
d. Developing external fertilization of jelly-coated eggs
10.Indeterminant development, a feature of Deuterostomes, allows early cells to develop
into complete embryos. What does this mean for the evolution of Deuterostomes?
a. During development they have radial cleavage where the cells divide parallel or
perpendicular to the embryo axis which allows for structures like bones to be
created
b. During development if the original bastopore splits then two full offspring will be
born which is the explanation behind identical twins
c. The bastopore will become the anus and the mouth
d. During development they have spiral cleavage where the cells divide at oblique
angles allowing for the creation of connective tissues
1.The image to the left is a critical evolutionary
1
development. What is each part of the amniotic egg doing
for the embryo?
a. Amnion: ___________________________
b. Yolk Sac: __________________________
c. Allantois: ___________________________
d. Chorion: ___________________________
12.Why is it a critical evolutionary development?
______________________________________________
______________________________________________
______________________________________________
13.A researcher compares the origins of plastids in land plants and in some euglenids.
Which statement best describes the relationship of these plastids in terms of
evolutionary events?
a. Land plants obtained plastids by secondary endosymbiosis, whereas euglenids
obtained plastids by primary endosymbiosis.
b. Land plants obtained plastids by primary endosymbiosis, whereas euglenids
obtained plastids secondarily via engulfment of a green alga.
c. Both groups obtained their plastids by primary endosymbiosis of a
cyanobacterium within a heterotrophic host.
d. Land plants and euglenids share plastids from the same secondary
endosymbiotic event involving a red alga.
