Question 1

Your friend is an amateur aquarist learning to breed clownfish.She had one successful clutch of eggs, and moved the mother and fry with their anemone to a separate tank leaving only male fish behind.Now, she is surprised to find that a new female fish has appeared in the original tank.What is the most likely explanation for this?

Accepted Answer

A)  Some anemone species secrete pheromones that control the sex of fish as a way to regulate predation.Removal of the anemone allowed a new female to develop.
B)  In urban areas, tap water is polluted with contamination from endocrine disruptors such as BPA and PCBs.When she removed some of the tank water for the new tank, she should have replaced it with bottled water.
C)  Clownfish are protandrous hermaphrodites that respond to social cues.Removal of the dominant female allowed the second-largest fish to transform into a female.
D)  Clownfish synchronize their mating based on seasonal cues indicated by salinity.When she replaced some of the tank water, the lower salinity caused the fish to change into a female.E) All of the above
F) None of the above

Question 2

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) All of the above
F) A) and D)

Question 3

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

Accepted Answer

A)  monotremes
B)  placentals
C)  marsupialsD) A) and B)
E) A) and C)

Question 4

What stimulates spermatogenesis?

Accepted Answer

A)  Estradiol
B)  FSH
C)  LH
D)  TestosteroneE) A) and C)
F) B) and C)

Question 5

Vertebrates that practice internal fertilization employ three strategies for embryonic and fetal development.In one strategy, the female retains the young which develop and obtain nourishment from the female's blood.What is this called?

Accepted Answer

A)  oviparity
B)  ovoviviparity
C)  viviparity
D)  protogynyE) B) and D)
F) None of the above

Question 6

What describes marsupial embryos?

Accepted Answer

A)  They are born fully developed.
B)  They are born highly underdeveloped.
C)  They hatch from an internal egg.
D)  They hatch from an externally laid egg.E) B) and D)
F) A) and D)

Question 7

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) B) and C)
F) B) and D)

Question 8

What prompts monthly preparation of uterus for pregnancy?

Accepted Answer

A)  Estradiol
B)  Testosterone
C)  Progesterone
D)  ProlactinE) A) and B)
F) All of the above

Question 9

There are exceptions to the general rule that amphibians lay eggs that develop in the water.These exceptions showed 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) A) and B)
F) A) and C)

Question 10

A Women's Studies professor wants her students to learn more about their bodies, so she asks the female students to measure their basal body temperature daily.A small rise in temperature indicates that ovulation is occurring.However, some students do not record a change in temperature -- which ones?

Accepted Answer

A)  Students with IUDs.
B)  Students using oral contraceptives, hormonal implants, or injections.
C)  Students who have never had intercourse.
D)  Students using any form of birth control.E) A) and C)
F) None of the above

Question 11

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 12

The uterine lining proliferates during the female cycle and then sloughs off in what process?

Accepted Answer

A)  implantation
B)  fertilization
C)  menstruation
D)  ovulationE) A) and C)
F) A) and B)

Question 13

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

Accepted Answer

A)  Day 3
B)  Day 27
C)  Day 13
D)  Day 21E) None of the above
F) A) and C)

Question 14

In females at puberty, what cells begin to secrete the major female sex hormone estradiol?

Accepted Answer

A)  oocyte cells
B)  corpus luteum
C)  follicle cells
D)  granulosa cellsE) A) and B)
F) A) and C)

Question 15

What stimulates secretion of testosterone by Leydig cells?

Accepted Answer

A)  Estradiol
B)  FSH
C)  LH
D)  TestosteroneE) All of the above
F) B) and D)

Question 16

The immotile sperm develop motility in about 18 hours after arriving at the long, coiled tube called the

Accepted Answer

A)  vas deferens
B)  seminiferous tubules
C)  epididymis
D)  testisE) A) and B)
F) A) and C)

Exam 52: The Reproductive System

The uterine lining proliferates during the female cycle and then sloughs off in what process?

Correct Answer
verified

The immotile sperm develop motility in about 18 hours after arriving at the long, coiled tube called the

Correct Answer
verified

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

Correct Answer
verified

Choose the correct statement regarding estrous and menstrual cycles.

Correct Answer
verified

What prompts monthly preparation of uterus for pregnancy?

Correct Answer
verified

A Women's Studies professor wants her students to learn more about their bodies, so she asks the female students to measure their basal body temperature daily.A small rise in temperature indicates that ovulation is occurring.However, some students do not record a change in temperature -- which ones?

Correct Answer
verified

What describes marsupial embryos?

Correct Answer
verified

Vertebrates that practice internal fertilization employ three strategies for embryonic and fetal development.In one strategy, the female retains the young which develop and obtain nourishment from the female's blood.What is this called?

Correct Answer
verified

In females at puberty, what cells begin to secrete the major female sex hormone estradiol?

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

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

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

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

Correct Answer
verified

What stimulates spermatogenesis?

Correct Answer
verified

What stimulates secretion of testosterone by Leydig cells?

Correct Answer
verified

Exam 52: The Reproductive System

The uterine lining proliferates during the female cycle and then sloughs off in what process?

Correct AnswerverifiedShow Answer

The immotile sperm develop motility in about 18 hours after arriving at the long, coiled tube called the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Choose the correct statement regarding estrous and menstrual cycles.

Correct AnswerverifiedShow Answer

What prompts monthly preparation of uterus for pregnancy?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What describes marsupial embryos?

Correct AnswerverifiedShow Answer

Vertebrates that practice internal fertilization employ three strategies for embryonic and fetal development.In one strategy, the female retains the young which develop and obtain nourishment from the female's blood.What is this called?

Correct AnswerverifiedShow Answer

In females at puberty, what cells begin to secrete the major female sex hormone estradiol?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

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

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

Correct AnswerverifiedShow Answer

What stimulates spermatogenesis?

Correct AnswerverifiedShow Answer

What stimulates secretion of testosterone by Leydig cells?

Correct AnswerverifiedShow Answer

Correct Answer
verified

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Correct Answer
verified

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verified

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