Question 1

Since men produce millions of sperm,but women produce only one oocyte per cycle,in the vast majority of cases infertility is due to a problem with the woman.

Accepted Answer

A) True 
 B)False

Question 2

What is often -- but not always -- a feature that accompanies the evolution of internal fertilization?

Accepted Answer

A)  meiotically-produced oocytes
B)  synchronized gamete release in a population
C)  fusion of egg and sperm within the female
D)  a male intromittent organE) B) and C)
F) A) and D)

Question 3

Which of the following statements is true of reptiles?

Accepted Answer

A)  Eggs undergo external fertilization.
B)  Sperm are released in the vicinity of the female.
C)  Eggs have an amnion and a chorion.
D)  Larvae become adults by metamorphosis.
E)  Embryonic and fetal development in all species is only by oviparity.F) A) and B)
G) B) and D)

Question 4

Major extinctions of dinosaurs are associated with large meteor impacts,including the final extinction that wiped them out at the Cretaceous-Tertiary boundary.The particulate matter that would have arisen as a result of impact would have entered the atmosphere and had secondary impacts.Some scientists believe that a fundamental difference between mammals and dinosaurs allowed mammals to survive this event,but doomed the dinosaurs.What may have characterized the last generation of dinosaurs as they went extinct?

Accepted Answer

A)  Lungs clogged with dust
B)  Highly skewed sex ratios
C)  Hormonal disruptions due to contaminated water
D)  Weak eggshells due to radiation
E)  Inability to recognize mates due to diminished sunlightF) A) and C)
G) A) and B)

Question 5

What is an important benefit of using condoms?

Accepted Answer

A)  They prevent prostate cancer.
B)  They have a failure rate of only 1%.
C)  They can help prevent osteoporosis.
D)  They help protect against STDs.E) B) and C)
F) None of the above

Question 6

Some internally fertilized eggs develop and hatch outside the mother's body.What is this developmental strategy called?

Accepted Answer

A)  oviparity
B)  placental development
C)  marsupial development
D)  viviparyE) None of the above
F) A) and D)

Question 7

Choose the letter of the best match from the following:
-Sperm destruction.

Accepted Answer

A)  birth control pill
B)  intrauterine device
C)  diaphragm
D)  foams and jellies
E)  vasectomyF) A) and D)
G) C) and E)

Question 8

-According to the figure,what is a likely day of implantation?

Accepted Answer

A)  Day 3
B)  Day 27
C)  Day 13
D)  Day 21
E)  Day 7F) D) and E)
G) A) and B)

Question 9

A patient at a fertility clinic has been diagnosed with "luteal phase defect" (LPD) .Her progesterone levels are low and her cycles are short.What step of reproduction are these symptoms disrupting?

Accepted Answer

A)  Follicle development
B)  Ovulation
C)  Fertilization of the egg
D)  ImplantationE) None of the above
F) A) and C)

Question 10

Which is a correct description of hormone action?

Accepted Answer

A)  FSH stimulates Leydig cells in the testes.
B)  LH stimulates Sertoli cells in the testes.
C)  Testosterone stimulates corpus luteum.
D)  GnRH stimulates the anterior pituitary gland.
E)  Testosterone regulates LH and FSH in a positive feedback loop.F) All of the above
G) B) and E)

Question 11

In agriculture,male animals are often castrated to modify their behavior and to produce desirable qualities in the meat.What would you predict about hormone levels in castrated male animals?

Accepted Answer

A)  Testosterone is high; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are low.
B)  Testosterone is low; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are high.
C)  Testosterone is low; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are low.
D)  Testosterone is high; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are high.E) B) and C)
F) A) and B)

Question 12

Vertebrates that practice internal fertilization employ three strategies for embryonic and fetal development.In one strategy,the female retains the eggs within her body and the young are fully developed when they hatch inside of her.What is this called?

Accepted Answer

A)  oviparity
B)  ovoviviparity
C)  viviparity
D)  protogyny
E)  protandryF) B) and E)
G) C) and E)

Question 13

Ovulation occurs by a surge in the secretion of what hormone?

Accepted Answer

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

Question 14

What describes placental mammalian embryos?

Accepted Answer

A)  They are born immediately after fertilization.
B)  They develop inside a leathery shell.
C)  They complete development in a pouch.
D)  They hatch from an internal egg.
E)  They are totally dependent on the mother for complete development.F) A) and E)
G) B) and D)

Question 15

There are numerous fish genera that have individuals that can change their sex during their lifetime.What is this called?

Accepted Answer

A)  sequential hermaphroditism
B)  sequential sex determination
C)  sequential parthenogenesis
D)  sequential production of gametes
E)  sequential fertilizationF) B) and C)
G) D) and E)

Question 16

What are the only mammals that lay eggs?

Accepted Answer

A)  monotremes
B)  placentals
C)  marsupials
D)  there are no egg-laying mammalsE) None of the above
F) All of the above

Question 17

Which hormone prevents the corpus luteum from degenerating?

Accepted Answer

A)  LH
B)  FSH
C)  hCG
D)  progesterone
E)  estrogenF) C) and D)
G) D) and E)

Question 18

Which of the following have young which feed on milk?

Accepted Answer

A)  marsupials
B)  monotremes
C)  placental mammals
D)  placental mammals and marsupials
E)  placental mammals,marsupials,and monotremesF) A) and B)
G) C) and D)

Question 19

There are exceptions to the general rule that amphibians lay eggs that develop in the water.These exceptions show extreme variation but they do have one thing in common.What is it?

Accepted Answer

A)  They all develop in some sort of pouch.
B)  They all develop in desert environments.
C)  They all develop in habitats with adequate humidity.
D)  They all develop in a camouflaged environment.
E)  They all develop more slowly than eggs developed in water.F) A) and C)
G) B) and D)

Exam 51: The Reproductive System

Choose the letter of the best match from the following: -Sperm destruction.

Correct Answer
verified

There are numerous fish genera that have individuals that can change their sex during their lifetime.What is this called?

Correct Answer
verified

Since men produce millions of sperm,but women produce only one oocyte per cycle,in the vast majority of cases infertility is due to a problem with the woman.

Correct Answer
verified

In agriculture,male animals are often castrated to modify their behavior and to produce desirable qualities in the meat.What would you predict about hormone levels in castrated male animals?

Correct Answer
verified

Ovulation occurs by a surge in the secretion of what hormone?

Correct Answer
verified

A patient at a fertility clinic has been diagnosed with "luteal phase defect" (LPD) .Her progesterone levels are low and her cycles are short.What step of reproduction are these symptoms disrupting?

Correct Answer
verified

Which of the following have young which feed on milk?

Correct Answer
verified

There are exceptions to the general rule that amphibians lay eggs that develop in the water.These exceptions show extreme variation but they do have one thing in common.What is it?

Correct Answer
verified

Vertebrates that practice internal fertilization employ three strategies for embryonic and fetal development.In one strategy,the female retains the eggs within her body and the young are fully developed when they hatch inside of her.What is this called?

Correct Answer
verified

What are the only mammals that lay eggs?

Correct Answer
verified

-According to the figure,what is a likely day of implantation?

Correct Answer
verified

Which hormone prevents the corpus luteum from degenerating?

Correct Answer
verified

Some internally fertilized eggs develop and hatch outside the mother's body.What is this developmental strategy called?

Correct Answer
verified

Correct Answer
verified

Which is a correct description of hormone action?

Correct Answer
verified

What is an important benefit of using condoms?

Correct Answer
verified

Which of the following statements is true of reptiles?

Correct Answer
verified

What is often -- but not always -- a feature that accompanies the evolution of internal fertilization?

Correct Answer
verified

What describes placental mammalian embryos?

Correct Answer
verified

Exam 51: The Reproductive System

Choose the letter of the best match from the following: -Sperm destruction.

Correct AnswerverifiedShow Answer

There are numerous fish genera that have individuals that can change their sex during their lifetime.What is this called?

Correct AnswerverifiedShow Answer

Since men produce millions of sperm,but women produce only one oocyte per cycle,in the vast majority of cases infertility is due to a problem with the woman.

Correct AnswerverifiedShow Answer

In agriculture,male animals are often castrated to modify their behavior and to produce desirable qualities in the meat.What would you predict about hormone levels in castrated male animals?

Correct AnswerverifiedShow Answer

Ovulation occurs by a surge in the secretion of what hormone?

Correct AnswerverifiedShow Answer

A patient at a fertility clinic has been diagnosed with "luteal phase defect" (LPD) .Her progesterone levels are low and her cycles are short.What step of reproduction are these symptoms disrupting?

Correct AnswerverifiedShow Answer

Which of the following have young which feed on milk?

Correct AnswerverifiedShow Answer

There are exceptions to the general rule that amphibians lay eggs that develop in the water.These exceptions show extreme variation but they do have one thing in common.What is it?

Correct AnswerverifiedShow Answer

Vertebrates that practice internal fertilization employ three strategies for embryonic and fetal development.In one strategy,the female retains the eggs within her body and the young are fully developed when they hatch inside of her.What is this called?

Correct AnswerverifiedShow Answer

What are the only mammals that lay eggs?

Correct AnswerverifiedShow Answer

-According to the figure,what is a likely day of implantation?

Correct AnswerverifiedShow Answer

Which hormone prevents the corpus luteum from degenerating?

Correct AnswerverifiedShow Answer

Some internally fertilized eggs develop and hatch outside the mother's body.What is this developmental strategy called?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which is a correct description of hormone action?

Correct AnswerverifiedShow Answer

What is an important benefit of using condoms?

Correct AnswerverifiedShow Answer

Which of the following statements is true of reptiles?

Correct AnswerverifiedShow Answer

What is often -- but not always -- a feature that accompanies the evolution of internal fertilization?

Correct AnswerverifiedShow Answer

What describes placental mammalian embryos?

Correct AnswerverifiedShow Answer

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