Question 1

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 discs 
A) polar bodies 
B) secondary oocytes 
C) fraternal twins 
D) identical twins 
E) embryonic discs D

Question 2

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. 
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. E

Question 3

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 twins 
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 twins D

Question 4

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

Question 5

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. 
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.

Question 6

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

Question 7

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. 
A) follicle cells. 
B) primary spermatocytes. 
C) endometrial cells. 
D) polar bodies. 
E) oocytes.

Question 8

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. 
A) follicle-stimulating hormone. 
B) luteinizing hormone. 
C) human chorionic gonadotropin. 
D) estrogen. 
E) progesteronE.

Question 9

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

Question 10

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. 
A) ejaculatory duct. 
B) ureter. 
C) urethra. 
D) seminiferous tubule. 
E) vas deferens.

Question 11

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 hypothalamus 
A) the epididymis 
B) the testes 
C) the vas deferens 
D) the prostate 
E) the hypothalamus

Question 12

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. 
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.

Question 13

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

Question 14

Cilia sweep the released mature oocytes from ovaries into the

Accepted Answer

A) cervix. 
B) uterine tubes. 
C) labia majora. 
D) uterus. 
E) vagina. 
A) cervix. 
B) uterine tubes. 
C) labia majora. 
D) uterus. 
E) vagina.

Question 15

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. 
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.

Question 16

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 female 
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 female

Question 17

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) differentiation 
A) external fertilization 
B) internal fertilization 
C) indirect development 
D) direct development 
E) differentiation

Question 18

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. 
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.

Question 19

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. 
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.

Question 20

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

Exam 30: Animal Reproduction and Development

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

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

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

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

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

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

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

The hormone that is the basis of most pregnancy tests is

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

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

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?

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

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

Cilia sweep the released mature oocytes from ovaries into the

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

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?

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

Menopause

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

The structure that connects the embryo to the placenta is the

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