Deck 42: Animal Reproductive Systems

Question 1

Sea urchin reproduction involves all of the following EXCEPT

A)producing enormous numbers of eggs.
B)allocating large amounts of energy and resources to making each egg.
C)producing very small eggs.
D)producing eggs with minimal energy reserves.
E)rapid development of self-feeding larva from fertilized eggs.

Answer 1

B

Question 2

All of the following animals give birth to live young after extensive internal development in the female EXCEPT

A)humans.
B)mice.
C)kangaroos.
D)monkeys.
E)lions.

Answer 2

C

Question 3

Which of the following is the last structure that a sperm travels through as it leaves the body?

A)ureter
B)urethra
C)vas deferens
D)ejaculatory duct
E)epididymis

Answer 3

B

Question 4

Which of the following is the site where mature sperm are stored?

A)ureter
B)urethra
C)vas deferens
D)bulbourethral gland
E)epididymis

Question 5

The organism shown above is using which of the following types of reproduction?

A)asexual budding
B)sexual production of eggs
C)hermaphroditic co-fertilization
D)a combination of all three
E)none of these

Question 6

The organism shown above is using which of the following types of reproduction?

A)asexual budding
B)sexual production of eggs
C)hermaphroditic co-fertilization
D)a combination of all three
E)none of these

Question 7

The major difference between the human male and female reproductive systems is the

A)provision of a site for fertilization and embryo development in the female.
B)production of haploid gametes only by the male.
C)diploid polar bodies of the female.
D)generation of millions of eggs but only thousands of sperm each month.
E)presence of a duct system opening to the body's exterior only in females.

Question 8

If the vas deferens tubes are cut and tied (vasectomy), the semen eventually will not contain

A)fructose.
B)buffers.
C)prostaglandins.
D)sperm.
E)any of these.

Question 9

Which of the following is NOT one of the factors contributing to the high cost of sexual reproduction?

A)development and maintenance of specialized reproductive structures
B)formation and nourishment of gametes
C)maintaining reproductive timing mechanisms
D)maintaining body cells
E)protection and nourishment of offspring

Question 10

Which of the following is NOT true of asexual reproduction?

A)It is more suitable for reproduction in animals in stable environments.
B)It results in offspring that are identical to each other.
C)It promotes genetic variation in successive generations.
D)Fission is a type of asexual reproduction.
E)The offspring are essentially genetically identical to the parents.

Question 11

Which of the following is part of the urinary system, not the reproductive system?

A)ureter
B)urethra
C)vas deferens
D)vas efferens
E)epididymis

Question 12

Puberty in males marks the start of

A)sperm production.
B)testosterone production.
C)the emergence of secondary sexual traits.
D)fertility.
E)all of these.

Question 13

Occasionally the testes do not descend into the scrotum as they should in a newborn.If this is not corrected surgically,

A)sperm production will be affected.
B)achieving an erection will not be possible.
C)the child will have female characteristics.
D)growth will be stunted.
E)the child will not live.

Question 14

Santhi Soundarajan won a silver metal in the 2006 Pan Asian Games.Why did she later have her metals recalled?

A)She was a cross-dresser who pretended to be female.
B)She was a female who had a Y chromosome without knowing about the genetic condition.
C)She used performance enhancing drugs that altered her genetic structure.
D)She was genetically altered at birth to create a faster runner.
E)Her government gave her a sex change in order to hide the fact that she was really a male.

Question 15

Semen components are produced by

A)the prostate gland.
B)the seminal vesicles.
C)the testes.
D)the urinary bladder.
E)all except "urinary bladder."

Question 16

One hundred million sperm are produced daily in the

A)interstitial cells.
B)prostate.
C)seminiferous tubules.
D)vas deferens.
E)epididymis.

Question 17

Which of the following is NOT an advantage of asexual reproduction?

A)Asexual reproduction is more efficient than sexual reproduction.
B)Individual organisms do not have to seek mates.
C)Asexual reproduction promotes variation.
D)Asexual reproduction is less energetically costly than sexual reproduction.
E)In stable environments the offspring are as well adapted as the parents.

Question 18

Sperm are produced in the

A)testes.
B)vas deferens.
C)epididymis.
D)prostate gland.
E)penis.

Question 19

The seminal vesicles ("sperm vessels") are misnamed.Sperm are actually stored in the

A)vas deferens.
B)epididymis.
C)prostate.
D)scrotum.
E)urethra.

Question 20

Which of the following is NOT found in the seminal fluid?

A)sucrose
B)buffers to raise pH
C)prostaglandins
D)sperm
E)fructose

Question 21

Meiosis I results directly in the production of

A)spermatids.
B)spermatogonia.
C)primary spermatocytes.
D)secondary spermatocytes.
E)sperm.

Question 22

Which cells are produced during meiosis I?

A)spermatogonia
B)primary spermatocytes
C)secondary spermatocytes
D)spermatids
E)sperm

Question 23

Testosterone

A)stimulates spermatogenesis.
B)promotes the normal development and maintenance of sexual behavior.
C)is responsible for the development of male secondary sexual characteristics.
D)is responsible for the development of the male genitalia.
E)does all of these.

Question 24

Based on their response to a particular hormone from the anterior pituitary, Sertoli cells of the male are most like __________ of the female.

A)uterine cells
B)oviducts
C)ovarian follicles
D)cervix cells
E)the corpus luteum

Question 25

Secretions of the Leydig cells eventually pass into the

A)semen.
B)vagina.
C)blood.
D)semen and vagina.
E)semen, vagina, and blood.

Question 26

Which of the following is (are) risk factor(s) for developing prostate cancer?

A)advancing age
B)heredity
C)tobacco smoking
D)a high-fat diet
E)all of these

Question 27

Which of the following is false about reproductive system cancers in males?

A)Prostate cancer is a leading cause of death in men.
B)There are 7,000 cases of testicular cancer diagnosed each year in the Unites States.
C)Some individuals who have prostate cancer are unaware of their condition.
D)Prostate cancer and testicular cancer produce painful symptoms in their early stages.
E)Early treatment of testicular cancer has a high success rate.

Question 28

The female reproductive system includes all EXCEPT which of the following?

A)clitoris
B)vagina
C)oviduct
D)ovary
E)mammary gland

Question 29

Which of the following is NOT involved in a feedback loop in the male reproductive system?

A)anterior pituitary
B)hypothalamus
C)adrenal gland
D)Sertoli cells
E)Leydig cells

Question 30

All EXCEPT which of the following are intermediates in or products of meiosis?

A)male gametes
B)spermatids
C)sperm
D)secondary spermatocytes
E)spermatogonia

Question 31

Which of the following structures is NOT found in mature sperm?

A)nucleus
B)acrosome with enzymes
C)mitochondria
D)microtubules in the tail
E)ribosomes

Question 32

The release of testosterone requires

A)GnRH.
B)luteinizing hormone.
C)Sertoli cells.
D)GnRH and luteinizing hormone.
E)GnRH, luteinizing hormone, and Sertoli cells.

Question 33

All EXCEPT which of the following hormones are in some way responsible for the production of sperm?

A)luteinizing hormone
B)follicle-stimulating hormone
C)gonadotropic-releasing hormone
D)testosterone
E)human chorionic gonadotropin

Question 34

The direct role of LH in males is to

A)stimulate testosterone secretion.
B)stimulate spermatogenesis.
C)stimulate Sertoli cells.
D)inhibit GnRH secretion.
E)do all of these.

Question 35

Secretion of GnRH is inhibited by all EXCEPT

A)secretions from Sertoli cells.
B)elevated testosterone levels.
C)secretion of inhibin.
D)normal sperm production.
E)secretions from Leydig cells.

Question 36

Which of the following statements is false?

A)Because males do not have follicles, the follicle-stimulating hormone has no function in males.
B)LH binds to Leydig cells, stimulating them to secrete testosterone.
C)The testes descend into the scrotal sac before birth.
D)For sperm to develop properly they must be in an environment that is below body temperature.
E)The scrotal sac is equipped with muscles that may raise or lower the testes.

Question 37

Which of the following cells are diploid?

A)spermatids
B)primary spermatocytes
C)secondary spermatocytes
D)spermatogonia
E)both primary spermatocytes and spermatogonia