Question 1

Animal sperm cells tend to be larger than animal egg cells.

Accepted Answer

A) True 
 B)False

Question 2

Study the diagram below.Which of the following sentences is true?

Accepted Answer

A)  Sperm cells are genetically identical. 
B)  Division of cytoplasm in oogenesis is unequal. 
C)  Oogenesis results in the generation of two egg cells per germ line cell. 
D)  Sperm cells are created in only one round of meiosis. 
A)  Sperm cells are genetically identical. 
B)  Division of cytoplasm in oogenesis is unequal. 
C)  Oogenesis results in the generation of two egg cells per germ line cell. 
D)  Sperm cells are created in only one round of meiosis.

Question 3

The four sperm produced by spermatogenesis are genetically identical to the primary spermatocyte.

Accepted Answer

A) True 
 B)False

Question 4

During fetal development humans develop a small tail that disappears before birth due to

Accepted Answer

A)  oxytocin. 
B)  environmental influences. 
C)  homeotic genes. 
D)  apoptosis. 
A)  oxytocin. 
B)  environmental influences. 
C)  homeotic genes. 
D)  apoptosis.

Question 5

A disadvantage of external fertilization is that the

Accepted Answer

A)  gametes are not specifically targeted toward each other. 
B)  organisms must expend energy finding mates. 
C)  offspring produced are genetically identical to each other. 
D)  offspring produced are diploid organisms. 
A)  gametes are not specifically targeted toward each other. 
B)  organisms must expend energy finding mates. 
C)  offspring produced are genetically identical to each other. 
D)  offspring produced are diploid organisms.

Question 6

Women stop ovulating when they undergo ________.

Accepted Answer

The answer of Women stop ovulating when they undergo ________....

Question 7

The number of chromosomes in secondary spermatocytes is fewer than in primary spermatocytes because

Accepted Answer

A)  sister chromatids are separated during meiosis II. 
B)  sister chromatids are separated during meiosis I. 
C)  homologous pairs are separated during meiosis II. 
D)  homologous pairs are separated during meiosis I. 
A)  sister chromatids are separated during meiosis II. 
B)  sister chromatids are separated during meiosis I. 
C)  homologous pairs are separated during meiosis II. 
D)  homologous pairs are separated during meiosis I.

Question 8

The graph below shows the rate of cell division in a developing frog embryo.
 
Why does the rate of growth decrease dramatically after the point indicated by the arrow?

Accepted Answer

A)  At this point,development switches from rapid cell growth to cell differentiation and migration. 
B)  The arrow indicates when the embryo begins to run out of its internal food source and must find another source to continue developing. 
C)  This is when fertilization occurs.Before this point,the single-celled egg was growing quickly as it stored food.After this point,growth slows for the more deliberate process of development. 
D)  At the time indicated by the arrow,the trophoblast separates from the inner cell mass and the two tissues begin to divide at different and slower rates. 
A)  At this point,development switches from rapid cell growth to cell differentiation and migration. 
B)  The arrow indicates when the embryo begins to run out of its internal food source and must find another source to continue developing. 
C)  This is when fertilization occurs.Before this point,the single-celled egg was growing quickly as it stored food.After this point,growth slows for the more deliberate process of development. 
D)  At the time indicated by the arrow,the trophoblast separates from the inner cell mass and the two tissues begin to divide at different and slower rates.

Question 9

Diploid eggs can develop into embryos without fertilization in a process called ________.

Accepted Answer

The answer of Diploid eggs can develop into embryos without...

Question 10

The ovaries produce ________ gametes than the testes.

Accepted Answer

The answer of The ovaries produce ________ gametes than the...

Question 11

Land-dwelling animals typically reproduce by ________ fertilization.

Accepted Answer

The answer of Land-dwelling animals typically reproduce by ________ fertilization....

Question 12

Germ line cells are haploid.

Accepted Answer

A) True 
 B)False

Question 13

In oogenesis,the final steps of meiosis do NOT occur until ________ takes place.

Accepted Answer

The answer of In oogenesis,the final steps of meiosis do...

Question 14

An aquatic animal that relies on currents to bring gametes together is likely to produce ________ gametes than a land animal that deposits its sperm directly within the reproductive tract of a female.

Accepted Answer

The answer of An aquatic animal that relies on currents...

Question 15

Examine this close-up of the placenta (on the left of the figure below).
 
Why do the chorionic villi have the shape of a tree?

Accepted Answer

A)  The branches of the chorionic villi create a large amount of surface area for the exchange of nutrients and gases between maternal and fetal blood. 
B)  The branches of the chorionic villi allow blood to flow back and forth more rapidly between the capillaries of the mother and her fetus. 
C)  The branches of the chorionic villi create more locations where fetal capillaries can fuse directly with maternal capillaries. 
D)  The branches of the chorionic villi create more surface area for the production of the amniotic fluid. 
A)  The branches of the chorionic villi create a large amount of surface area for the exchange of nutrients and gases between maternal and fetal blood. 
B)  The branches of the chorionic villi allow blood to flow back and forth more rapidly between the capillaries of the mother and her fetus. 
C)  The branches of the chorionic villi create more locations where fetal capillaries can fuse directly with maternal capillaries. 
D)  The branches of the chorionic villi create more surface area for the production of the amniotic fluid.

Question 16

The genetic material in an egg cell is as old as the female who ovulates the egg cell.

Accepted Answer

A) True 
 B)False

Question 17

In humans,the exchanges of materials between the embryo and its mother occur through the

Accepted Answer

A)  umbilical cord. 
B)  amnion. 
C)  yolk sac. 
D)  endometrium. 
A)  umbilical cord. 
B)  amnion. 
C)  yolk sac. 
D)  endometrium.

Question 18

The graph below shows the normal concentration of morphogens A and B throughout a Drosophila embryo.
 
If morphogen B is injected into the head end of an embryo,the embryo is likely to develop

Accepted Answer

A)  normally. 
B)  a second tail at the head end. 
C)  a second head at the tail end. 
D)  two heads at the head end. 
A)  normally. 
B)  a second tail at the head end. 
C)  a second head at the tail end. 
D)  two heads at the head end.

Question 19

Hyperemesis gravidarum,severe morning sickness,is caused by a decreased sensitivity to human chorionic gonadotropin.

Accepted Answer

A) True 
 B)False

Question 20

In general,why does a female animal tend to choose her mate more carefully than does a male?

Accepted Answer

A)  Males tend to live longer than females. 
B)  Males do not produce as much sperm as females do eggs. 
C)  A female has more resources tied up in an egg than a male does in sperm. 
D)  Females use more of their resources in mate-attracting displays. 
A)  Males tend to live longer than females. 
B)  Males do not produce as much sperm as females do eggs. 
C)  A female has more resources tied up in an egg than a male does in sperm. 
D)  Females use more of their resources in mate-attracting displays.

Exam 33: Reproduction and Development

Animal sperm cells tend to be larger than animal egg cells.

Study the diagram below.Which of the following sentences is true?

The four sperm produced by spermatogenesis are genetically identical to the primary spermatocyte.

During fetal development humans develop a small tail that disappears before birth due to

A disadvantage of external fertilization is that the

Women stop ovulating when they undergo ________.

The number of chromosomes in secondary spermatocytes is fewer than in primary spermatocytes because

The graph below shows the rate of cell division in a developing frog embryo. Why does the rate of growth decrease dramatically after the point indicated by the arrow?

Diploid eggs can develop into embryos without fertilization in a process called ________.

The ovaries produce ________ gametes than the testes.

Land-dwelling animals typically reproduce by ________ fertilization.

Germ line cells are haploid.

In oogenesis,the final steps of meiosis do NOT occur until ________ takes place.

An aquatic animal that relies on currents to bring gametes together is likely to produce ________ gametes than a land animal that deposits its sperm directly within the reproductive tract of a female.

Examine this close-up of the placenta (on the left of the figure below). Why do the chorionic villi have the shape of a tree?

The genetic material in an egg cell is as old as the female who ovulates the egg cell.

In humans,the exchanges of materials between the embryo and its mother occur through the

The graph below shows the normal concentration of morphogens A and B throughout a Drosophila embryo. If morphogen B is injected into the head end of an embryo,the embryo is likely to develop

Hyperemesis gravidarum,severe morning sickness,is caused by a decreased sensitivity to human chorionic gonadotropin.

In general,why does a female animal tend to choose her mate more carefully than does a male?

The Nature of Science and the Characteristics of Life

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

Internal Organization and Homeostasis

Nutrition and Digestion

Circulation and Gas Exchange

Animal Hormones

Nervous and Sensory Systems

Skeletons,Muscles,and Movement

The Immune System

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

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