AnswersLA-Biology B-CRCumulative Exam

Cumulative Exam — Cumulative exam Answers

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Male peacocks have large colorful tails that they spread in a fan shape to attract females during courtship. Peahens (female peacocks) are more likely to mate with males that have larger and more colorful tails. As a result, few peacocks have tails with dull coloring.Which concept is demonstrated by a decrease in dull coloring?

Question illustration
A
speciation
B
biodiversity
C
natural selection
D
variation
2
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What is the function of the hormone progesterone?

A
preparation of the body for maintaining pregnancy
B
development of male secondary sex characteristics
C
development of female secondary sex characteristics
D
preparation of the fallopian tube for fertilization
3

Which most clearly shows evolutionary relationships between species?

A
binomial nomenclature
B
phylogenetic tree
C
common name
D
morphological data
4

What do goblet cells and cilia have in common?

A
Both moisten the air.
B
Both filter the air.
C
Both secrete mucus.
D
Both diffuse oxygen.
5

When comparing dogs to wolves, scientists found evidence that supports the idea they come from a common ancestor. Which combination of evidence would most strongly support this idea?

A
comparable anatomies, fossils, and behavior
B
different anatomies, similar development, and different DNA
C
comparable anatomies, similar development, and similar DNA
D
different anatomies, fossils, and behavior
6

The graph shows the changing levels of hormones during menstruation and ovulation. What happens to hormone levels during ovulation, and why is this important?

Question illustration
A
The hormone levels increase to prepare a woman’s body to receive a fertilized egg.
B
The hormone levels decrease to prepare a woman’s body to receive a fertilized egg.
C
The hormone levels increase, and the next menstrual cycle begins with shedding of the uterine lining.
D
The hormone levels decrease, and the next menstrual cycle begins with shedding of the uterine lining.
7

The lava released by a volcanic eruption separates two populations of a species of monkey. What does this represent?

A
biological isolation
B
geographical isolation
C
temporal isolation
D
anatomical isolation
8

Which best describes fetal development?

A
The heart beats and is heard during the first trimester.
B
The heart beats and is heard during the second trimester.
C
The heart beats during the first trimester, but is heard in the second trimester.
D
The heart beats during the second trimester, and is heard in the third trimester.
9

Which statement is most accurate about alternation of generations?

A
It involves changing the total number of chromosomes in a plant cell.
B
It refers to the haploid and diploid phases of the plant life cycle.
C
It refers to the processes of meiosis and fertilization.
D
It involves only some of the seedless vascular plants.
10

In which plants' life cycle does double fertilization occur?

A
seedless plants
B
nonvascular plants
C
gymnosperm plants
D
angiosperm plants
11

Which of the following is an example of adaptive radiation?

A
One population of squirrels becomes two separate species over a long time.
B
One population of lizards forms 15 separate species over a short time.
C
One species of birds becomes better suited to its environment over time.
D
One species of fish forms when two species of fish begin to breed with each other.
12

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. There has been much debate about the classification of these creatures. Some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. The data equally support both cases.Which statement best explains how to draw a cladogram that includes the rynchosaur?

Question illustration
A
Draw the cladogram for amphibians.
B
Draw the cladogram for reptiles.
C
Draw two cladograms, both showing the traits, and leave it as a hypothesis.
D
Draw two cladograms, both showing the traits, and have scientists vote.
13

Which organism is an animal-like protist?

A
cilia
B
dinoflagellate
C
amoeba
D
truffle
14

Which best describes the exocrine glands?

A
Exocrine glands function only for digestion and temperature regulation.
B
Exocrine glands can sometimes release substances out of the body.
C
Exocrine glands secrete substances into the bloodstream.
D
Exocrine glands are only found in the skin and mouth.
15

How can a person donate blood and never run out of it?

A
Blood components are continuously pumped by the heart.
B
Blood components are continuously circulated through the blood vessels.
C
Blood components are continuously produced in the bone marrow.
D
Blood components are continuously digested by enzymes.
16

Which is accurate about the six kingdoms?

A
One is eukaryotic, and five are prokaryotic.
B
Four are eukaryotes, and two are prokaryotes.
C
Four are prokaryotes, and two are eukaryotes.
D
Three are eukaryotes, and three are prokaryotes.
17

Fossils cannot be used to explain changes in the earth.

A
T
B
F
18

This table incudes the characteristics of all major kingdoms.Characteristics of Each KingdomDomain KingdomBody typeCell typeBacteriaEubacteriaUnicellularProkaryoteArchaeaArchaebacteriaUnicellularProkaryoteEukaryaProtistaMost unicellularEukaryoteFungiBothEukaryotePlantaeMulticellularEukaryoteAnimaliaMulticellularEukaryoteBased on the table, which kingdom(s) includes more than one body type?

A
Protista and Fungi
B
Eukarya and Archaea
C
Plantae and Animalia
D
Protista and Plantae
19

Which specific process helps the respiratory system get rid of excess water and heat?

A
diffusion
B
inhalation
C
exhalation
D
evaporation
20

Which statement best describes the relationship between antigens and antibodies?

A
Antigens cause the lymph nodes to decrease in size, and antibodies cause the lymph nodes to increase in size.
B
Antibodies cause the production of antigens, and antigens attack antibodies.
C
Antigens cause lymph to be clear, and antibodies cause lymph to become yellow.
D
Antigens cause the production of antibodies, and antibodies attack antigens.

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