AnswersCO-Biology B-CRUnit Test

Unit Test — Unit test Answers

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1
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Consider this microscopic image of bacteria. Which type of bacteria is shown in the image?

Question illustration
A
bacillus
B
coccus
C
spirillum
D
cholera
2
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The classification levels of a human are listed below from largest to smallest. EukaryaAnimaliaChordataMammaliaPrimatesHominidaeHomosapiensWhich level of biological classification do Mammalia and Hominidae represent, respectively?

A
class and family
B
order and class
C
family and species
D
species and kingdom
3

Which correctly distinguishes between how a pine tree and an apple tree reproduce?

A
The pine tree bears flowers; the apple tree does not have any flowers.
B
The pine tree has unprotected seeds; the apple tree has seeds in fruit.
C
The pine tree is vascular; the apple tree is a seedless, nonvascular plant.
D
The pine tree is nonvascular; the apple tree is vascular.
4

Phytoplankton, shown on the left in the image below, are microscopic organisms that can be found in freshwater and salt water environments. They perform photosynthesis to get energy and act as an important food source for larger organisms, such as the whale that is shown on the right. Which characteristic describes the whale but not its food source, the phytoplankton?

Question illustration
A
The whale is heterotrophic.
B
The whale has cell walls.
C
The whale is unicellular.
D
The whale is a prokaryote.
5

Brown bears pant, which means they breathe with short, quick breaths. This helps circulate cool air over moist surfaces in the mouth.

A
maintaining internal water levels by releasing moisture
B
maintaining internal water levels by taking in moisture
C
maintaining body temperature by warming up
D
maintaining body temperature by cooling down
6

A biologist is in the process of classifying a newly discovered fungus. The fungus is a decomposer and has saclike structures. The organism most likely belongs in the same group as which of the following?

A
fungi that are rusts
B
fungi that are associated with bread mold
C
fungi that makes blue cheese
D
fungi that are autotrophic decomposers
7

Every animal has a distinct body plan.

A
A sea sponge.
Option A
B
A ladybug.
Option B
C
A crab.
Option C
D
Coral.
Option D
8

Consider the diagram of the basic structure of a bacterium.Which of the labeled structures in the image allows bacteria to exchange genetic material and thus evolve to be better pathogens?

Question illustration
A
A
B
B
C
C
D
D
9

Some species form social groups only with members of the same gender. For example, elephants form groups with only females and their offspring. Once the male offspring reach a certain age, they leave the group and become solitary.Which is a benefit of this type of social group structure?

A
Females do not have to compete for a mate.
B
Male offspring can belong to more than one social group.
C
Adult males can mate with females in several different social groups.
D
Females are the only ones responsible for taking care of the offspring.
10

When protists and fungi are compared, which feature is unique to protists?

A
spores
B
hyphae
C
flagella
D
pseudopods
11

A group of sheep run in random directions to confuse a single predator. This is an example of which social behavior?

A
migrating
B
herding
C
schooling
D
cooperative hunting
12

This is a tulip plant. Which statement best describes the flower based on its physical characteristics?

Question illustration
A
The tulip plant is classified as a dicot.
B
The tulip plant has netted veins.
C
The tulip plant has ring-like vascular bundles.
D
The tulip plant is categorized as a monocot.
13

Which series correctly lists the eight taxonomic levels in order, from the broadest group to the most specific group?

A
species, genus, family, order, class, phylum, kingdom, domain
B
domain, kingdom, phylum, class, order, family, genus, species
C
species, genus, family, class, order, phylum, kingdom, domain
D
domain, kingdom, phylum, order, class, family, genus, species
14

Mike is studying the phylogenetic tree for big cats. He made several statements about the tree. Which statement is not true?

Question illustration
A
The leopard is more closely related to the jaguar than to the snow leopard.
B
The leopard is more closely related to the tiger than to the clouded leopard.
C
The leopard is more closely related to the snow leopard than to the clouded leopard.
D
The leopard is more closely related to the tiger than to the snow leopard.
15

An organism has the following characteristics: cell wall, autotrophic, unicellular, and eukaryotic. What kingdom does it most likely belong in?

A
Animalia
B
Protista
C
Plantae
D
Eubacteria
16

Which can modern taxonomy do?

A
design tables based on physical characteristics
B
compare the length of DNA among members of a species
C
compare the length of RNA among members of a species
D
distinguish how closely related organisms are
17

An example of genetic recombination is shown in the diagram.Which type of bacterial reproduction is depicted in the diagram?

Question illustration
A
binary fission
B
transduction
C
conjugation
D
transformation
18

This diagram summarizes a method to group land plants. Which row in the table best represents the evolution of plants that match the diagram? Labels for Plant Classifications 123456AGymnospermsAngiospermsSeed plantsSeedless plantsMonocotsDicotsBDicotsMonocotsAngiospermsGymnospermsSeed plantsSeedless plantsCSeed plantsSeedless plantsAngiospermsGymnospermsDicotsMonocotsDSeedless plantsSeed plantsGymnospermsAngiospermsMonocotsDicots

Question illustration
A
A
B
B
C
C
D
D
19

Which level of classification includes the most species?

A
kingdom
B
domain
C
genus
D
class
20

Which best describes the difference between protists that have cilia and those that have flagella?

A
Those that have cilia are animal-like protists, and those that have flagella are plant-like protists.
B
Those that have flagella are animal-like protists, and those that have cilia are plant-like protists.
C
Those with cilia move using hair-like extensions, and those with flagella move using a single whip-like extension.
D
Those that have cilia are heterotrophs, and those that have flagella are autotrophs.

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