Question 1

The structure of reproductive systems is similar between some organisms.What prevents fertilization of gametes from different organisms?

Accepted Answer

A)  The sperm is too large or too small to fertilize the egg.
B)  The large body size of one organism and the small body size of the other organism prevents internal fertilization.
C)  One organism reproduces externally and the other organism requires internal fertilization.
D)  Proteins on the surface of the egg and sperm are only recognized by the correct organism.
E)  All answers are correct.F) None of the above
G) B) and E) E

Question 2

If a preembryo splits before day 12 of development in humans,then ______ are usually formed.

Accepted Answer

A)  polar bodies
B)  secondary oocytes
C)  fraternal twins
D)  identical twins
E)  embryonic discsF) A) and B)
G) A) and C) D

Question 3

Why does the expulsion of the placenta not occur until the final stage of labor?

Accepted Answer

A)  to remove waste from the fetus during labor
B)  to provide nourishment to the fetus during labor
C)  to provide oxygen to the fetus during labor
D)  to remove carbon dioxide from the fetus during labor
E)  All answers are correct.F) C) and D)
G) A) and B)

Question 4

In the section "Investigating Life: The 'Cross-Dressers' of the Reef",how did the scientists measure if a male was successful in fertilizing a female?

Accepted Answer

A)  by watching to see if the male mated with the female
B)  by comparing the baby cuttlefish with the father to look for similarities
C)  by removing the other males from the area
D)  by using DNA paternity testing
E)  by measuring the time the male spent guarding a femaleF) A) and B)
G) None of the above

Question 5

The hormone released from the hypothalamus that stimulates release of LH and FSH in both the male and female is

Accepted Answer

A)  human growth hormone.
B)  testosterone.
C)  gonadotropin-releasing hormone.
D)  estrogen hormone.
E)  human chorionic gonadotropin.F) B) and D)
G) B) and C)

Question 6

Birth control pills contain a combination of estrogen and progesterone.What effect would this have on the hypothalamus?

Accepted Answer

A)  It would secrete less FSH and LH.
B)  It would secrete more gonadotrophin-releasing hormone.
C)  It would secrete more FSH and LH.
D)  It would secrete less gonadotrophin-releasing hormone.
E)  There would be no effect on the hypothalamus.F) A) and E)
G) B) and C)

Question 7

A female salmon laying unfertilized eggs in a nest is preparing them for ____ by a male salmon.

Accepted Answer

A)  external fertilization
B)  internal fertilization
C)  indirect development
D)  direct development
E)  differentiationF) C) and D)
G) A) and B)

Question 8

The hormone released by the anterior pituitary that stimulates the development of the corpeus luteum is

Accepted Answer

A)  GnRH.
B)  FSH.
C)  LH.
D)  ATP.
E)  progesteronE.F) A) and B)
G) A) and C)

Question 9

is a surgical procedure in which the vas deferens are severed,and then tied.How would this cause sterility?

Accepted Answer

A)  Sperm cannot be produced by meiosis.
B)  Sperm cannot be produced by mitosis.
C)  Sperm cannot move to the urethra.
D)  A man cannot get an erection.
E)  The testes stop producing testosteronE.F) A) and E)
G) A) and B)

Question 10

The gland that forms from ruptured follicle cells in the ovary and secretes estrogen and progesterone is the

Accepted Answer

A)  labia majorA.
B)  prostate gland.
C)  seminal vesicle.
D)  clitoris.
E)  corpeus luteum.F) A) and B)
G) D) and E)

Question 11

The cells in the ovary that give rise to the mature egg cells are the

Accepted Answer

A)  follicle cells.
B)  primary spermatocytes.
C)  endometrial cells.
D)  polar bodies.
E)  oocytes.F) A) and D)
G) All of the above

Question 12

Although impossible in humans,what is the result if two sperm fertilized an egg?

Accepted Answer

A)  a haploid zygote with one third of the total chromosomes from each gamete
B)  a diploid zygote with one half of the total chromosomes from each gamete
C)  a diploid zygote with all of the chromosomes from each gamete
D)  a triploid zygote with all of the chromosomes from each gamete
E)  identical twinsF) B) and E)
G) B) and D) D

Question 13

Athletes who take synthetic steroids can become sterile due to lack of sperm production.This is because of negative feedback on which of the following?

Accepted Answer

A)  the epididymis
B)  the testes
C)  the vas deferens
D)  the prostate
E)  the hypothalamusF) B) and C)
G) A) and B)

Question 14

The hormone that is the basis of most pregnancy tests is

Accepted Answer

A)  follicle-stimulating hormone.
B)  luteinizing hormone.
C)  human chorionic gonadotropin.
D)  estrogen.
E)  progesteronE.F) C) and E)
G) All of the above

Question 15

Which of the following statements about sexually-transmitted diseases is wrong?

Accepted Answer

A)  STDs are unique to humans.
B)  The most common STD in the United States is genital warts.
C)  An individual with one STD can obtain another STD.
D)  STDs spread through vaginal,oral,and anal sex.
E)  Many STDs do not show initial symptoms,especially in men.F) A) and B)
G) A) and C)

Question 16

Menopause

Accepted Answer

A)  is the cessation of menstruation.
B)  is the cessation of sperm production.
C)  is the beginning of menstruation.
D)  begins in most females at puberty.
E)  begins in most males at puberty.F) A) and D)
G) C) and D)

Question 17

In the male,the tube that extends from the scrotum to the point of connection with the urethra is the

Accepted Answer

A)  ejaculatory duct.
B)  ureter.
C)  urethra.
D)  seminiferous tubule.
E)  vas deferens.F) None of the above
G) B) and D)

Question 18

The structure that connects the embryo to the placenta is the

Accepted Answer

A)  chorionic villus.
B)  umbilical cord.
C)  uterine tube.
D)  fallopian tube.
E)  embryonic disc.F) B) and E)
G) A) and B)

Question 19

Cilia sweep the released mature oocytes from ovaries into the

Accepted Answer

A)  cervix.
B)  uterine tubes.
C)  labia majora.
D)  uterus.
E)  vagina.F) All of the above
G) D) and E)

Question 20

The stage of human development in which the endoderm,mesoderm,and ectoderm form is the

Accepted Answer

A)  zygote.
B)  gastrula.
C)  embryonic stage.
D)  ovum.
E)  fetal stagE.F) A) and C)
G) B) and E)

Exam 30: Animal Reproduction and Development

The structure of reproductive systems is similar between some organisms.What prevents fertilization of gametes from different organisms?

Correct AnswerverifiedE

If a preembryo splits before day 12 of development in humans,then ______ are usually formed.

Correct AnswerverifiedD

Why does the expulsion of the placenta not occur until the final stage of labor?

Correct AnswerverifiedShow Answer

In the section "Investigating Life: The 'Cross-Dressers' of the Reef",how did the scientists measure if a male was successful in fertilizing a female?

Correct AnswerverifiedShow Answer

The hormone released from the hypothalamus that stimulates release of LH and FSH in both the male and female is

Correct AnswerverifiedShow Answer

Birth control pills contain a combination of estrogen and progesterone.What effect would this have on the hypothalamus?

Correct AnswerverifiedShow Answer

A female salmon laying unfertilized eggs in a nest is preparing them for ____ by a male salmon.

Correct AnswerverifiedShow Answer

The hormone released by the anterior pituitary that stimulates the development of the corpeus luteum is

Correct AnswerverifiedShow Answer

is a surgical procedure in which the vas deferens are severed,and then tied.How would this cause sterility?

Correct AnswerverifiedShow Answer

The gland that forms from ruptured follicle cells in the ovary and secretes estrogen and progesterone is the

Correct AnswerverifiedShow Answer

The cells in the ovary that give rise to the mature egg cells are the

Correct AnswerverifiedShow Answer

Although impossible in humans,what is the result if two sperm fertilized an egg?

Correct AnswerverifiedD

Athletes who take synthetic steroids can become sterile due to lack of sperm production.This is because of negative feedback on which of the following?

Correct AnswerverifiedShow Answer

The hormone that is the basis of most pregnancy tests is

Correct AnswerverifiedShow Answer

Which of the following statements about sexually-transmitted diseases is wrong?

Correct AnswerverifiedShow Answer

Menopause

Correct AnswerverifiedShow Answer

In the male,the tube that extends from the scrotum to the point of connection with the urethra is the

Correct AnswerverifiedShow Answer

The structure that connects the embryo to the placenta is the

Correct AnswerverifiedShow Answer

Cilia sweep the released mature oocytes from ovaries into the

Correct AnswerverifiedShow Answer

The stage of human development in which the endoderm,mesoderm,and ectoderm form is the

Correct AnswerverifiedShow Answer

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