Bio 2 FINAL exam review (mastering) Questions With
Complete Solutions
_____ are eukaryotic autotrophs that float near the surface of
water and are the basis of the food chain. Correct Answers
Phytoplankton
_____ are the oldest known primate group. Correct Answers
Prosimians
A billionaire buys a sterile volcanic island that recently emerged
from the sea. To speed the arrival of conditions necessary for
plant growth, the billionaire might be advised to aerially sow
what over the island? Correct Answers soredia
A botanist discovers a new species of plant in a tropical rain
forest. Investigation of its anatomy and life cycle shows the
following characteristics: flagellated sperm, xylem with
tracheids, separate gametophyte, and sporophyte generations
with the sporophyte dominant, and no seeds. This plant is
probably most closely related to ________. Correct Answers
ferns
A carpel is composed of _____. Correct Answers stigma,
style,
ovary
A farmer wishes to develop a strain of high-yield corn that is
also resistant to drought. He has the following individuals from
the current year's crop:
,Individual A—Yield: 179 bushels/acre; drought resistance: high
Individual B—Yield: 220 bushels/acre; drought resistance: low
Individual C—Yield: 185 bushels/acre; drought resistance:
medium
Individual D—Yield: 140 bushels/acre; drought resistance: high
Individual E—Yield: 200 bushels/acre; drought resistance:
medium Correct Answers A and E
A marine biologist dredges up a small animal from the bottom
of the ocean. It is uniformly segmented, with short, stiff
appendages and soft, flexible skin. It has a complete digestive
system and a closed circulatory system, plus multiple true
coeloms. Based on this, you determine that the animal must be
a(n) _____. Correct Answers annelid
A new species of aquatic chordate is discovered that closely
resembles an ancient form. It has the following characteristics:
external armor of bony plates, no paired lateral fins, and a
suspension-feeding mode of nutrition. In addition to these, it
will probably have which of the following characteristics?
Correct Answers no jaws
A stamen consists of _____. Correct Answers anther and
filament
A trend first observed in the evolution of the earliest tetrapods
was _____. Correct Answers feet with digits
According to the _____ model, evolution occurs in spurts;
species evolve relatively rapidly then remain unchanged for long
periods. Correct Answers punctuated equilibrium
,According to the concept of punctuated equilibrium, the
"sudden" appearance of a new species in the fossil record means
that ________. Correct Answers speciation occurred rapidly in
geologic time
According to the fossil record, plants colonized terrestrial
habitats _____. Correct Answers in conjunction with fungi that
helped provide them with nutrients from the soil
All animals can trace their lineage to a common ancestor that
lived in the _____. Correct Answers Neoproterozoic era
All animals, whether large or small, have _____. Correct
Answers most of their cells in contact with an aqueous medium
All fungi share which of the following characteristics? Correct
Answers heterotrophic
All insects ________. Correct Answers have segmented bodies
and an exoskeleton
All seed plants _____. Correct Answers are heterosporous
Almost all of the members of this phylum form arbuscular
mycorrhizae in a mutualistic partnership with plants. Correct
Answers Glomeromycota
Among the characteristics unique to animals is Correct Answers
gastrulation.
, An adaptation is _____. Correct Answers a trait that gives an
organism a reproductive advantage in the current environment
An ecological relationship between organisms of different
species that are in direct contact can best be described as _____.
Correct Answers symbiotic
An example of a properly functioning homeostatic control
system is seen when ________. Correct Answers the kidneys
excrete salt into the urine when dietary salt levels rise
An example of an ectothermic organism that has few or no
behavioral options when it comes to its ability to adjust its body
temperature is a _____. Correct Answers sea star living deep in
the ocean
An important example of interaction between fungi and certain
other organisms is mycorrhizae, in which the fungal partners
_____. Correct Answers help plants take up nutrients and water
An important trend in animal evolution was cephalization. An
animal is said to show cephalization when it _____. Correct
Answers has an aggregation of sensory neurons at the anterior
end
An individual mixotroph loses its plastids, yet continues to
survive. Which of the following most likely accounts for its
continued survival? Correct Answers It engulfs organic
material by phagocytosis or by absorption.
Complete Solutions
_____ are eukaryotic autotrophs that float near the surface of
water and are the basis of the food chain. Correct Answers
Phytoplankton
_____ are the oldest known primate group. Correct Answers
Prosimians
A billionaire buys a sterile volcanic island that recently emerged
from the sea. To speed the arrival of conditions necessary for
plant growth, the billionaire might be advised to aerially sow
what over the island? Correct Answers soredia
A botanist discovers a new species of plant in a tropical rain
forest. Investigation of its anatomy and life cycle shows the
following characteristics: flagellated sperm, xylem with
tracheids, separate gametophyte, and sporophyte generations
with the sporophyte dominant, and no seeds. This plant is
probably most closely related to ________. Correct Answers
ferns
A carpel is composed of _____. Correct Answers stigma,
style,
ovary
A farmer wishes to develop a strain of high-yield corn that is
also resistant to drought. He has the following individuals from
the current year's crop:
,Individual A—Yield: 179 bushels/acre; drought resistance: high
Individual B—Yield: 220 bushels/acre; drought resistance: low
Individual C—Yield: 185 bushels/acre; drought resistance:
medium
Individual D—Yield: 140 bushels/acre; drought resistance: high
Individual E—Yield: 200 bushels/acre; drought resistance:
medium Correct Answers A and E
A marine biologist dredges up a small animal from the bottom
of the ocean. It is uniformly segmented, with short, stiff
appendages and soft, flexible skin. It has a complete digestive
system and a closed circulatory system, plus multiple true
coeloms. Based on this, you determine that the animal must be
a(n) _____. Correct Answers annelid
A new species of aquatic chordate is discovered that closely
resembles an ancient form. It has the following characteristics:
external armor of bony plates, no paired lateral fins, and a
suspension-feeding mode of nutrition. In addition to these, it
will probably have which of the following characteristics?
Correct Answers no jaws
A stamen consists of _____. Correct Answers anther and
filament
A trend first observed in the evolution of the earliest tetrapods
was _____. Correct Answers feet with digits
According to the _____ model, evolution occurs in spurts;
species evolve relatively rapidly then remain unchanged for long
periods. Correct Answers punctuated equilibrium
,According to the concept of punctuated equilibrium, the
"sudden" appearance of a new species in the fossil record means
that ________. Correct Answers speciation occurred rapidly in
geologic time
According to the fossil record, plants colonized terrestrial
habitats _____. Correct Answers in conjunction with fungi that
helped provide them with nutrients from the soil
All animals can trace their lineage to a common ancestor that
lived in the _____. Correct Answers Neoproterozoic era
All animals, whether large or small, have _____. Correct
Answers most of their cells in contact with an aqueous medium
All fungi share which of the following characteristics? Correct
Answers heterotrophic
All insects ________. Correct Answers have segmented bodies
and an exoskeleton
All seed plants _____. Correct Answers are heterosporous
Almost all of the members of this phylum form arbuscular
mycorrhizae in a mutualistic partnership with plants. Correct
Answers Glomeromycota
Among the characteristics unique to animals is Correct Answers
gastrulation.
, An adaptation is _____. Correct Answers a trait that gives an
organism a reproductive advantage in the current environment
An ecological relationship between organisms of different
species that are in direct contact can best be described as _____.
Correct Answers symbiotic
An example of a properly functioning homeostatic control
system is seen when ________. Correct Answers the kidneys
excrete salt into the urine when dietary salt levels rise
An example of an ectothermic organism that has few or no
behavioral options when it comes to its ability to adjust its body
temperature is a _____. Correct Answers sea star living deep in
the ocean
An important example of interaction between fungi and certain
other organisms is mycorrhizae, in which the fungal partners
_____. Correct Answers help plants take up nutrients and water
An important trend in animal evolution was cephalization. An
animal is said to show cephalization when it _____. Correct
Answers has an aggregation of sensory neurons at the anterior
end
An individual mixotroph loses its plastids, yet continues to
survive. Which of the following most likely accounts for its
continued survival? Correct Answers It engulfs organic
material by phagocytosis or by absorption.
