Question 1

With help from fertility specialists,a woman with very low follicle-stimulating hormone and luteinizing hormone levels finally conceives a son.If her genetic condition is from a dominant allele and is passed on to her son,what is the likely result?

Accepted Answer

A)  He may have fertility problems as well.
B)  He is likely to have more sons than daughters.
C)  He will be fine,but his daughters will have a 50% chance of fertility problems.
D)  As a male,he will neither express nor pass on these genes.E) All of the above
F) B) and C)

Question 2

What is the primary means of reproduction among the protists,cnidaria,and tunicates?

Accepted Answer

A)  asexual reproduction
B)  sexual reproduction
C)  asynchronous reproduction
D)  hermaphroditic reproductionE) A) and B)
F) B) and C)

Question 3

What was the most important adaptation of the reptiles and birds to life on land?

Accepted Answer

A)  the shelled egg
B)  the amniotic egg
C)  the external egg
D)  the impermeable eggE) A) and C)
F) B) and C)

Question 4

What hormone is tested for in pregnancy tests?

Accepted Answer

A)  estrogen hormone
B)  luteinizing hormone
C)  follicle stimulation hormone
D)  progesterone hormone
E)  hCG hormoneF) None of the above
G) B) and E)

Question 5

What kind of oocyte is released from the ovary at ovulation?

Accepted Answer

A)  primary
B)  germinal
C)  secondary
D)  ovumE) B) and C)
F) A) and C)

Question 6

What initiates the monthly preparation of the uterus for pregnancy?

Accepted Answer

A)  Estradiol
B)  Testosterone
C)  Progesterone
D)  Prolactin
E)  OxytocinF) A) and D)
G) B) and D)

Question 7

An extremely rare occurrence in humans is a multiple pregnancy with the embryos at different stages due to fertilization weeks apart.What mechanism normally prevents this from happening?

Accepted Answer

A)  The embryo's secretion of FSH and LH maintains the corpus luteum,keeping estradiol and progesterone high until the placenta takes over secretion of these hormones.
B)  The embryo's secretion of GnRH maintains the corpus luteum,keeping FSH and LH high until the placenta takes over secretion of these hormones.
C)  The embryo's secretion of hCG maintains the corpus luteum,keeping estradiol and progesterone high until the placenta takes over secretion of these hormones.
D)  The follicle's secretion of polar bodies maintains the fimbriae,keeping estradiol and progesterone high until the fallopian tube takes over secretion of these hormones.E) All of the above
F) None of the above

Question 8

Select the correct pair of statements about FSH and LH function.

Accepted Answer

A)  In males,FSH stimulates spermatogenesis and LH stimulates Leydig cells to secrete testosterone. In females,FSH stimulates growth of follicles and LH stimulates ovulation and development of the corpus luteum.
B)  In males,FSH stimulates spermatogenesis and LH stimulates Leydig cells to secrete testosterone. In females,FSH stimulates ovulation and development of the corpus luteum and LH stimulates growth of follicles.
C)  In males,FSH stimulates Leydig cells to secrete testosterone and LH stimulates spermatogenesis. In females,FSH stimulates growth of follicles and LH stimulates ovulation and development of the corpus luteum.
D)  In males,FSH stimulates Leydig cells to secrete testosterone and LH stimulates spermatogenesis. In females,FSH stimulates ovulation and development of the corpus luteum and LH stimulates growth of follicles.E) A) and B)
F) B) and C)

Question 9

Choose the correct statement regarding estrous and menstrual cycles.

Accepted Answer

A)  Animals with estrous cycles are sexually receptive only when they are ovulating.
B)  Menstrual cycles are longer than estrous cycles.
C)  Copulation can only occur during ovulation in the menstrual cycle.
D)  The lining of the uterus is shed during menstruation and estrous.
E)  Ovulation only occurs in animals with a menstrual cycle.F) B) and C)
G) C) and E)

Question 10

What cause of infertility happens to nearly every woman at some point?

Accepted Answer

A)  idiopathic infertility
B)  pelvic inflammatory disease (PI
D)  
C)  endometriosis
D)  luteal phase defect
E)  agingF) B) and C)
G) A) and B)

Question 11

Sea turtles are endangered,in part because of human encroachment on the beaches where they lay eggs.You are working with a team to help protect turtle nests and hatchlings from curious beachgoers.Someone suggests putting a fabric dome over each nest to keep people away.What is your response?

Accepted Answer

A)  "That will have several benefits,including protecting the nests from rough weather and hurricanes."
B)  "That would create a new problem if it blocked the females,since the females sit on the nests to keep them warm."
C)  "That might create a new problem.Sea turtles use temperature-dependent sex determination,and lowering the temperature of the nest will likely change the sex ratio of the hatchlings."
D)  "That would create a new problem if it blocked the males.The males have to be able to dig into the nest to fertilize the eggs."E) C) and D)
F) A) and B)

Question 12

What is the term for organisms in which internally-fertilized eggs are laid to develop and hatch outside the mother's body?

Accepted Answer

A)  placental
B)  viviparous
C)  oviparous
D)  marsupial
E)  ovoviviparousF) A) and D)
G) A) and C)

Question 13

What is the most commonly employed form of birth control in the United States?

Accepted Answer

A)  abstinence
B)  prevention of ovulation by hormonal inhibition
C)  sperm blockage with condoms
D)  sterilization
E)  prevention of embryo implantation with IUDF) B) and C)
G) A) and E)

Question 14

What mammals retain their young for a long period of development within the mother's uterus?

Accepted Answer

A)  monotremes
B)  placentals
C)  marsupials
D)  no mammals retain their young within the femaleE) A) and D)
F) A) and C)

Question 15

You have discovered a new invertebrate species that is slow-moving and widely dispersed.What might you predict about its reproductive system?

Accepted Answer

A)  Males are likely to be smaller than females.
B)  Females are likely to be smaller than males.
C)  It is likely to use internal fertilization and brood care.
D)  It is likely to be hermaphroditic.E) A) and B)
F) B) and C)

Question 16

You are doing veterinary research on dog hormones.In your set of blood samples,you have one male dog with abnormally high levels of follicle-stimulating hormone and luteinizing hormone.What do you suspect may be the explanation for this outlier?

Accepted Answer

A)  The dog had been neutered.
B)  The dog was a female,not a male.
C)  The dog had its pituitary gland removed.
D)  The dog had a hypothalamic problem causing low levels of gonadotropin-releasing hormone (GnRH) .E) C) and D)
F) B) and D)

Question 17

What caused intense selective pressure for terrestrial vertebrates to evolve internal fertilization?

Accepted Answer

A)  The eggs are too small for the males to find and fertilize.
B)  The gametes could not be released next to each other,as they would soon dry up.
C)  There is no mechanism for eggs and sperm to find one another.
D)  Terrestrial organisms only produce small quantities of gametes.
E)  Gametes and zygotes are vulnerable to predators.F) None of the above
G) D) and E)

Question 18

What stimulates spermatogenesis?

Accepted Answer

A)  Estradiol
B)  FSH
C)  LH
D)  Testosterone
E)  ProgesteroneF) C) and D)
G) A) and E)

Question 19

You notice that in your aquarium,previously full of undoubtedly male fish,one is laying eggs.Upon a bit of research,you find out that the species of fish you purchased is a sequential hermaphrodite.Which of the following is true?

Accepted Answer

A)  One of the male fish underwent protandry and became a female.
B)  One of the male fish fertilized its own eggs.
C)  Since the fish are hermaphrodites,one of the male fish laid eggs and another will likely fertilize them.
D)  The fish have parthenogenesis,therefore their eggs do not have to be fertilized to be viable.
E)  The fish have protogyny,which allows the males to lay eggs.F) A) and E)
G) All of the above

Question 20

Where does normal fertilization of an egg by a sperm in a human female occur?

Accepted Answer

A)  at the ovary upon ovulation
B)  in the uterus after the egg has implanted
C)  in the uterus before the egg has implanted
D)  near the cervix before the egg leaves the female
E)  in the Fallopian tubeF) A) and E)
G) B) and E)

Exam 51: The Reproductive System

What mammals retain their young for a long period of development within the mother's uterus?

Correct AnswerverifiedShow Answer

What hormone is tested for in pregnancy tests?

Correct AnswerverifiedShow Answer

With help from fertility specialists,a woman with very low follicle-stimulating hormone and luteinizing hormone levels finally conceives a son.If her genetic condition is from a dominant allele and is passed on to her son,what is the likely result?

Correct AnswerverifiedShow Answer

Sea turtles are endangered,in part because of human encroachment on the beaches where they lay eggs.You are working with a team to help protect turtle nests and hatchlings from curious beachgoers.Someone suggests putting a fabric dome over each nest to keep people away.What is your response?

Correct AnswerverifiedShow Answer

Choose the correct statement regarding estrous and menstrual cycles.

Correct AnswerverifiedShow Answer

What initiates the monthly preparation of the uterus for pregnancy?

Correct AnswerverifiedShow Answer

You are doing veterinary research on dog hormones.In your set of blood samples,you have one male dog with abnormally high levels of follicle-stimulating hormone and luteinizing hormone.What do you suspect may be the explanation for this outlier?

Correct AnswerverifiedShow Answer

What is the primary means of reproduction among the protists,cnidaria,and tunicates?

Correct AnswerverifiedShow Answer

An extremely rare occurrence in humans is a multiple pregnancy with the embryos at different stages due to fertilization weeks apart.What mechanism normally prevents this from happening?

Correct AnswerverifiedShow Answer

What was the most important adaptation of the reptiles and birds to life on land?

Correct AnswerverifiedShow Answer

What stimulates spermatogenesis?

Correct AnswerverifiedShow Answer

What is the term for organisms in which internally-fertilized eggs are laid to develop and hatch outside the mother's body?

Correct AnswerverifiedShow Answer

Select the correct pair of statements about FSH and LH function.

Correct AnswerverifiedShow Answer

Where does normal fertilization of an egg by a sperm in a human female occur?

Correct AnswerverifiedShow Answer

You notice that in your aquarium,previously full of undoubtedly male fish,one is laying eggs.Upon a bit of research,you find out that the species of fish you purchased is a sequential hermaphrodite.Which of the following is true?

Correct AnswerverifiedShow Answer

What is the most commonly employed form of birth control in the United States?

Correct AnswerverifiedShow Answer

What kind of oocyte is released from the ovary at ovulation?

Correct AnswerverifiedShow Answer

What caused intense selective pressure for terrestrial vertebrates to evolve internal fertilization?

Correct AnswerverifiedShow Answer

What cause of infertility happens to nearly every woman at some point?

Correct AnswerverifiedShow Answer

You have discovered a new invertebrate species that is slow-moving and widely dispersed.What might you predict about its reproductive system?

Correct AnswerverifiedShow Answer

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