Question 1

Reproductive systems with external fertilization are most common in

Accepted Answer

A)  animals that are widely dispersed.
B)  aquatic animals.
C)  populations with many more males than females.
D)  terrestrial animals.E) B) and C)
F) A) and B)

Question 2

Which of the following options correctly lists the three stages of labor in the order in which they occur?

Accepted Answer

A)  dilation,crowning,expulsion
B)  contractions,dilation,expulsion
C)  dilation,crowning,delivery of the placenta
D)  dilation,expulsion,delivery of the placentaE) B) and C)
F) C) and D)

Question 3

In which part of the human female reproductive system does fertilization normally take place?

Accepted Answer

A)  part A
B)  part B
C)  part C
D)  part DE) C) and D)
F) A) and D)

Question 4

After being produced in the testes,sperm mature further in a structure called the

Accepted Answer

A)  vas deferens.
B)  seminal vesicle.
C)  prostate.
D)  epididymis.E) B) and C)
F) A) and D)

Question 5

Which of the following statements regarding infertility and fertilization procedures is true?

Accepted Answer

A)  In GIFT,sperm are injected into an embryo in vitro,and the embryo is placed into the oviducts.
B)  Children conceived using reproductive technologies such as IVF and ICSI display a high rate of abnormalities resulting from these procedures.
C)  In IVF,fertilization occurs in a dish.The embryo is allowed to develop for several days,then the embryo is placed into the uterus.
D)  Embryos fertilized through assisted reproductive technologies cannot be frozen for later use,as they degrade rapidly.E) A) and D)
F) None of the above

Question 6

Which of the following events occurs first during embryonic development?

Accepted Answer

A)  gastrulation
B)  cleavage
C)  neurulation
D)  organ formationE) B) and C)
F) A) and D)

Question 7

Which of the following generates the ATP that is required for movement of the sperm's tail?

Accepted Answer

A)  a mitochondrion in the neck and middle piece
B)  the acrosome
C)  mitochondria in the sperm tail
D)  the sperm plasma membraneE) A) and B)
F) C) and D)

Question 8

Contractions in uterine smooth muscle during labor are initiated by

Accepted Answer

A)  oxytocin.
B)  prolactin.
C)  estrogen.
D)  epinephrine.E) C) and D)
F) None of the above

Question 9

Which of the following processes dominates the third trimester of human development?

Accepted Answer

A)  rapid growth
B)  formation of hair and fingernails
C)  organ formation
D)  formation of external features such as arms and legsE) A) and B)
F) B) and D) A

Question 10

Which of the following STDs is caused by a virus that can also cause cancer?

Accepted Answer

A)  syphilis
B)  candidiasis
C)  gonorrhea
D)  genital wartsE) C) and D)
F) B) and D)

Question 11

Which of the following processes is most similar to the process of cleavage?

Accepted Answer

A)  stringing beads onto a string
B)  slicing up a pie into eight pieces
C)  inflating a balloon
D)  melting a stick of butter in a hot panE) B) and C)
F) B) and D)

Question 12

Which of the following structures contributes to the structure of the placenta as well as completely surrounding the embryo?

Accepted Answer

A)  yolk sac
B)  allantois
C)  amnion
D)  chorionE) All of the above
F) None of the above

Question 13

When does the human blastocyst implant in the wall of the uterus?

Accepted Answer

A)  only after all four extraembryonic membranes become established.
B)  within a few hours of fertilization
C)  about a day after conception
D)  about a week after conceptionE) B) and C)
F) None of the above

Question 14

Cells migrate from one place to another during gastrulation using

Accepted Answer

A)  flagella.
B)  cellular protrusions.
C)  peristalsis.
D)  cilia.E) All of the above
F) C) and D)

Question 15

Which of the following is not a potential advantage of asexual reproduction?

Accepted Answer

A)  It saves the time and energy required to produce gametes.
B)  It allows animals that are genetically well suited to a particular environment to quickly expand their populations.
C)  It allows animals that do not move around to produce offspring without finding mates.
D)  It produces genetically diverse populations.E) A) and D)
F) A) and C)

Question 16

The embryo implants in the of the uterus.

Accepted Answer

A)  myometrium
B)  exometrium
C)  perimetrium
D)  endometriumE) All of the above
F) C) and D) D

Question 17

A major goal of developmental research is to understand

Accepted Answer

A)  DNA transcription.
B)  how DNA directs formation of a three- dimensional animal.
C)  evolutionary similarities between species.
D)  hormone interactions.E) B) and D)
F) All of the above

Question 18

Hermaphrodites are animals that

Accepted Answer

A)  possess both male and female reproductive systems.
B)  develop from unfertilized eggs.
C)  must fertilize themselves.
D)  have the gonads of one sex but the external appearance of the other.E) A) and B)
F) None of the above

Question 19

Men who take very long,hot baths are likely to

Accepted Answer

A)  produce healthier sperm.
B)  produce more sperm and ones that are healthier.
C)  produce fewer sperm.
D)  produce more sperm.E) C) and D)
F) A) and B) C

Question 20

At which gestational age does a developing human fetus first look obviously human and not like other vertebrate embryos?

Accepted Answer

A)  4 weeks
B)  9 weeks
C)  4 months
D)  2 weeksE) A) and C)
F) A) and D)

Exam 27: Reproduction and Embryonic Development

Reproductive systems with external fertilization are most common in

Correct AnswerverifiedShow Answer

Which of the following options correctly lists the three stages of labor in the order in which they occur?

Correct AnswerverifiedShow Answer

In which part of the human female reproductive system does fertilization normally take place?

Correct AnswerverifiedShow Answer

After being produced in the testes,sperm mature further in a structure called the

Correct AnswerverifiedShow Answer

Which of the following statements regarding infertility and fertilization procedures is true?

Correct AnswerverifiedShow Answer

Which of the following events occurs first during embryonic development?

Correct AnswerverifiedShow Answer

Which of the following generates the ATP that is required for movement of the sperm's tail?

Correct AnswerverifiedShow Answer

Contractions in uterine smooth muscle during labor are initiated by

Correct AnswerverifiedShow Answer

Which of the following processes dominates the third trimester of human development?

Correct AnswerverifiedA

Which of the following STDs is caused by a virus that can also cause cancer?

Correct AnswerverifiedShow Answer

Which of the following processes is most similar to the process of cleavage?

Correct AnswerverifiedShow Answer

Which of the following structures contributes to the structure of the placenta as well as completely surrounding the embryo?

Correct AnswerverifiedShow Answer

When does the human blastocyst implant in the wall of the uterus?

Correct AnswerverifiedShow Answer

Cells migrate from one place to another during gastrulation using

Correct AnswerverifiedShow Answer

Which of the following is not a potential advantage of asexual reproduction?

Correct AnswerverifiedShow Answer

The embryo implants in the of the uterus.

Correct AnswerverifiedD

A major goal of developmental research is to understand

Correct AnswerverifiedShow Answer

Hermaphrodites are animals that

Correct AnswerverifiedShow Answer

Men who take very long,hot baths are likely to

Correct AnswerverifiedC

At which gestational age does a developing human fetus first look obviously human and not like other vertebrate embryos?

Correct AnswerverifiedShow Answer

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A

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D

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C

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