1) Regeneration, the regrowth of lost body parts, normally follows
A) all types of asexual reproduction.
B) all types of
sexual reproduction.
C) fission.
D) fragmentation.
E) parthenogenesis.
Answer: D
2) One of the evolutionary "enigmas," or unsolved puzzles,
of sexual reproduction is that
A) sexual reproduction allows for
more rapid population growth than does asexual reproduction.
B)
only half of the offspring from sexually reproducing females are also
females.
C) asexual reproduction produces offspring of greater
genetic variety.
D) sexual reproduction is completed more
rapidly than asexual reproduction.
E) asexual reproduction is
better suited to environments with extremely varying conditions.
Answer: B
3) An advantage of asexual reproduction is that
A) asexual
reproduction allows the species to endure long periods of unstable
environmental conditions.
B) asexual reproduction enhances
genetic variability in the species.
C) asexual reproduction
enables the species to rapidly colonize habitats that are favorable to
that species.
D) asexual reproduction produces offspring that
respond effectively to new pathogens.
E) asexual reproduction
allows a species to easily rid itself of harmful mutations.
Answer: C
4) Genetic mutations in asexually reproducing organisms lead to more
evolutionary change than do genetic mutations in sexually reproducing
ones because
A) asexually reproducing organisms, but not
sexually reproducing organisms, pass all mutations on to their
offspring.
B) asexually reproducing organisms devote more time
and energy to the process of reproduction than do sexually reproducing
organisms.
C) sexually reproducing organisms can produce more
offspring in a given time than can sexually reproducing organisms.
D) more genetic variation is present in organisms that reproduce
asexually than is present in those that reproduce sexually.
E)
asexually reproducing organisms have more dominant genes than
organisms that reproduce sexually.
Answer: A
5) Asexual reproduction results in greater reproductive success than
does sexual reproduction when
A) pathogens are rapidly
diversifying.
B) a species has accumulated numerous deleterious
mutations.
C) there is some potential for rapid overpopulation.
D) a species is expanding into diverse geographic settings.
E) a species is in stable and favorable environments.
Answer: E
6) Sexual reproduction patterns include the example of
A)
fragmentation.
B) budding.
C) hermaphroditism.
D)
parthenogenesis.
E) fission.
Answer: C
7) Sexual reproduction
A) allows animals to conserve resources
and reproduce only during optimal conditions.
B) can produce
diverse phenotypes that may enhance survival of a population in a
changing environment.
C) yields more numerous offspring more
rapidly than is possible with asexual reproduction.
D) enables
males and females to remain isolated from each other while rapidly
colonizing habitats.
E) guarantees that both parents will
provide care for each offspring.
Answer: B
8) Environmental cues that influence the timing of reproduction
generally do so by
A) increasing the body temperature.
B)
providing access to water for external fertilization.
C)
increasing ambient temperature to that which is comfortable for sex.
D) direct effects on gonadal structures.
E) direct effects
on hormonal control mechanisms.
Answer: E
9) For water fleas of the genus Daphnia, switching from a pattern of
asexual reproduction to sexual reproduction coincides with
A)
environmental conditions becoming more favorable for offspring.
B) greater abundance of food resources for offspring.
C)
periods of temperature or food stresses on adults.
D) completion
of puberty.
E) exhaustion of an individual's supply of eggs.
Answer: C
10) All individuals of a particular species of whiptail lizards are
females. Their reproductive efforts depend on
A) fertilization
of their eggs by males of other lizard species.
B) gonadal
structures that only undergo mitosis.
C) meiosis followed by a
doubling of the chromosomes in eggs.
D) budding prior to the
development of a sexual phenotype.
E) fragmentation via autolysis.
Answer: C
11) Evidence that parthenogenic whiptail lizards are derived from
sexually reproducing ancestors includes
A) the requirement for
male-like behaviors in some females before their partners will
ovulate.
B) the development and then regression of testes prior
to sexual maturation.
C) the observation that all of the
offspring are haploid.
D) dependence on favorable weather
conditions for ovulation to occur.
E) the persistence of a
vestigial penis among some of the females.
Answer: A
12) Like many other fishes, bluehead wrasses utilize harem mating as
they reproduce sexually. However, unlike most fishes,
A) they
are simultaneous hermaphrodites.
B) they function without any
signaling by steroid hormones.
C) they undergo a prolonged
diapause during low tide.
D) their offspring can be either
haploid or diploid.
E) large females morph into reproductively
competent males.
Answer: E
13) Which of the following patterns of reproduction are found only
among invertebrate animals?
A) sexual and asexual reproduction
B) external and internal fertilization
C) hermaphroditism
and parthenogenesis
D) pheromonal and hormonal coordination
E) fission and budding
Answer: E
14) Animals with reproduction dependent on internal fertilization
need not have
A) any copulatory organs.
B) a receptacle
that receives sperm.
C) behavioral interaction between males and
females.
D) internal development of embryos.
E) haploid gametes.
Answer: D
15) In close comparisons, external fertilization often yields more
offspring than does internal fertilization. However, internal
fertilization offers the advantage that
A) it is the only way to
ensure the survival of the species.
B) it requires less time and
energy to be devoted to reproduction.
C) the smaller number of
offspring produced often receive a greater amount of parental
investment.
D) it permits the most rapid population increase.
E) it requires expression of fewer genes and maximizes genetic stability.
Answer: C
16) Internal and external fertilization both
A) produce
single-celled zygotes.
B) occur only among invertebrates.
C) occur only among terrestrial animals.
D) depend on the
use of intromittent copulatory organs.
E) occur only among birds.
Answer: A
17) Organisms with a reproductive pattern that produces shelled
amniotic eggs generally
A) end up having a higher embryo
mortality rate than do organisms with unprotected embryos.
B)
invest most of their reproductive energy in the embryonic and early
postnatal development of their offspring.
C) invest more energy
in parenting than do placental animals.
D) produce more gametes
than do those animals with external fertilization and development.
E) lower their embryo mortality rate to less than one in a thousand.
Answer: B
18) Among nonmammalian vertebrates, the cloaca is an anatomical
structure that functions as
A) a specialized sperm-transfer
device produced only by males.
B) a shared pathway for the
digestive, excretory, and reproductive systems.
C) a region
bordered by the labia minora and clitoris in females.
D) a
source of nutrients for developing sperm in the testes.
E) a
gland that secretes mucus to lubricate the vaginal opening.
Answer: B
19) External chemical signals that coordinate potential reproductive
partners are called
A) hormones.
B) pheromones.
C)
paracrine signals.
D) cytokines.
E) gametes.
Answer: B
20) Females of many insect species, including honeybee queens, can
store gametes shed by their mating partners in
A) their nests.
B) the abdominal tract.
C) the cloaca.
D) the
uterus.
E) the spermatheca.
Answer: E
21) Most flatworms, including parasitic liver flukes, are
hermaphrodites that form zygotes as the result of
A) internal
fertilization.
B) external fertilization.
C)
parthenogenesis.
D) eggs and sperm mixing together in excreted
feces.
E) eggs and sperm mixing together in wastewater.
Answer: A
22) When female fruit flies mate with two different males on the same
day,
A) the first male's sperm fertilizes all of the eggs.
B) the first male's sperm fertilizes most of the eggs.
C)
the second male's sperm fertilizes most of the eggs.
D) the
first and second males fertilize equal numbers of eggs.
E) none
of the eggs become fertilized.
Answer: C
23) An oocyte released from a human ovary enters the oviduct as a
result of
A) the beating action of the flagellum on the oocyte.
B) the force of the follicular ejection directing the oocyte
into the oviduct.
C) the wavelike beating of cilia lining the
oviduct.
D) movement of the oocyte through the pulsating uterus
into the oviduct.
E) peristaltic contraction of ovarian muscles.
Answer: C
24) The junction of the upper vagina and the uterus is called the
A) fallopian tube.
B) clitoris.
C) oviduct.
D)
labia majora.
E) cervix.
Answer: E
25) In humans, the follicular cells that remain behind in the ovary
following ovulation become
A) the ovarian endometrium that is
shed at the time of the menses.
B) a steroid-hormone
synthesizing structure called the corpus luteum.
C) the
thickened portion of the uterine wall.
D) swept into the
fallopian tube.
E) the placenta, which secretes cervical mucus.
Answer: B
26) Among mammals, the male and female genital structures that
consist mostly of erectile tissue include the
A) penis and
clitoris.
B) vas deferens and oviduct.
C) testes and
ovaries.
D) seminiferous tubules and hymen.
E) prostate
and ovaries.
Answer: A
27) Testosterone is synthesized primarily by the
A) sperm
cells.
B) hypothalamus.
C) Leydig cells.
D) anterior
pituitary gland.
E) seminiferous tubules.
Answer: C
28) Sperm cells are stored within human males in the
A)
urethra.
B) prostate.
C) epididymis.
D) seminal
vesicles.
E) bulbourethral gland.
Answer: C
29) Among human males, both semen and urine normally travel along the
A) vas deferens.
B) urinary bladder.
C) seminal
vesicle.
D) urethra.
E) ureter.
Answer: D
30) Human sperm cells first arise in the
A) prostate gland.
B) vas deferens.
C) seminiferous tubules.
D)
epididymis.
E) Sertoli cells.
Answer: C
31) The surgical removal of the seminal vesicles would likely
A) cause sterility because sperm would not be produced.
B)
cause sterility because sperm would not be able to exit the body.
C) greatly reduce the volume of semen.
D) enhance the
fertilization potency of sperm in the uterus.
E) cause the
testes to migrate back into the abdominal cavity.
Answer: C
32) Most of the noncellular fluid in ejaculated human semen is
composed of
A) the secretions of the seminiferous tubules.
B) the secretions of the bulbourethral glands.
C) the
secretions of the seminal vesicles.
D) the secretions of the
prostate gland.
E) anticoagulant enzymes.
Answer: C
33) Increasing the temperature of the human scrotum by 2°C (i.e.,
near the normal body core temperature) and holding it there would
A) reduce the fertility of the man by impairing the production
of gonadal steroid hormones.
B) reduce the fertility of the man
by impairing spermatogenesis.
C) reduce the man's sexual
interest.
D) increase the fertility of the affected man by
enhancing the rate of steroidogenesis.
E) have no effect on male
reproductive processes.
Answer: B
34) During human heterosexual (mutual) excitement, vasocongestion
A) occurs only in the penis.
B) occurs only in the testes.
C) occurs only in the clitoris.
D) occurs only in the
upper vagina.
E) occurs in the clitoris, vagina, and penis.
Answer: E
35) The moment of orgasm is characterized by
A) the ovulation
of the oocyte from the ovary.
B) the release of sperm from the
seminiferous tubules.
C) rhythmic contraction of many parts of
the reproductive system.
D) increased synthesis and release of
ovarian steroid hormones.
E) increased synthesis and release of
testicular steroid hormones.
Answer: C
36) At the time of fertilization, the complete maturation of each
oogonium has resulted in
A) one secondary oocyte.
B) two
primary oocytes.
C) four secondary oocytes.
D) four
primary oocytes.
E) four zygotes.
Answer: A
37) In vertebrate animals, spermatogenesis and oogenesis differ in
that
A) oogenesis begins at the onset of sexual maturity,
whereas spermatogenesis begins during embryonic development.
B)
oogenesis produces four haploid cells, whereas spermatogenesis
produces only one functional spermatozoon.
C) cytokinesis is
unequal in oogenesis, whereas it is equal in spermatogenesis.
D)
oogenesis ends at menopause, whereas spermatogenesis is finished
before birth.
E) spermatogenesis is not completed until after
fertilization occurs, but oogenesis is completed by the time a girl is born.
Answer: C
38) Mature human sperm and ova are similar in that
A) they both
have the same number of chromosomes.
B) they are approximately
the same size.
C) they each have a flagellum that provides
motility.
D) they are produced from puberty until death.
E) they are formed before birth.
Answer: A
39) A male's "primary" sex characteristics include
A)
deepening of the voice at puberty.
B) embryonic differentiation
of the seminal vesicles.
C) growth of skeletal muscle.
D)
elongation of the skeleton prior to puberty.
E) onset of growth
of facial hair at puberty.
Answer: B
40) The primary difference between estrous and menstrual cycles is
that
A) the endometrium shed by the uterus during the estrous
cycle is reabsorbed, whereas the shed endometrium of menstrual cycles
is excreted from the body.
B) behavioral changes during estrous
cycles are much less apparent than those of menstrual cycles.
C)
season and climate have less pronounced effects on estrous cycles than
they do on menstrual cycles.
D) copulation normally occurs
across the estrous cycle, whereas in menstrual cycles copulation only
occurs during the period surrounding ovulation.
E) most estrous
cycles are of much longer duration compared to menstrual cycles.
Answer: A
41) At the end of a nonpregnant ovarian cycle, the breakdown and
discharge of the soft uterine tissues is called
A) menstruation.
B) lactation.
C) fertilization.
D) menopause.
E) ovulation.
Answer: A
42) In correct chronological order, the three phases of the human
ovarian cycle are
A) menstrual → ovulation → luteal.
B)
follicular → luteal → secretory.
C) menstrual → proliferative →
secretory.
D) follicular → ovulation → luteal.
E)
proliferative → luteal → ovulation.
Answer: D
43) In correct chronological order, the three phases of the human
uterine cycle are
A) menstrual → ovulation → luteal.
B)
follicular → luteal → secretory.
C) menstrual → proliferative →
secretory.
D) follicular → ovulation → luteal.
E)
proliferative → luteal → ovulation.
Answer: C
44) A contraceptive pill that continuously inhibits the release of
GnRH from the hypothalamus will
A) increase the production of
estrogen and progesterone by the ovaries.
B) initiate ovulation.
C) reduce the secretion of gonadotropins from the anterior
pituitary gland.
D) stimulate the secretion of LH and FSH from
the posterior pituitary gland.
E) increase the flow phase of the
menstrual cycle.
Answer: C
45) A function-disrupting mutation in the progesterone receptor gene
would likely result in
A) the absence of secondary sex
characteristics.
B) the absence of pituitary gonadotropin
hormones.
C) the inability of the uterus to support pregnancy.
D) enlarged and hyperactive uterine endometrium.
E) the
absence of mammary gland development.
Answer: C
46) A primary response by the Leydig cells in the testes to the
presence of luteinizing hormone is an increase in the synthesis and
secretion of
A) inhibin.
B) testosterone.
C)
oxytocin.
D) prolactin.
E) progesterone.
Answer: B
47) A reproductive hormone that is secreted directly from a structure
in the brain is
A) testosterone.
B) estradiol.
C)
progesterone.
D) follicle-stimulating hormone.
E)
gonadotropin-releasing hormone.
Answer: E
48) The primary function of the corpus luteum is to
A) nourish
and protect the egg cell.
B) produce prolactin in the alveoli.
C) maintain progesterone and estrogen synthesis after ovulation
has occurred.
D) stimulate the development of the mammary
glands.
E) support pregnancy in the second and third trimesters.
Answer: C
49) For the 10 days following ovulation in a nonpregnant menstrual
cycle, the main source of progesterone is the
A) adrenal cortex.
B) anterior pituitary.
C) corpus luteum.
D)
developing follicle.
E) placenta.
Answer: C
50) Ovulation is the follicular response to a burst of secretion of
A) LH.
B) progesterone.
C) inhibin.
D)
prolactin.
E) estradiol.
Answer: A
51) Prior to ovulation, the primary steroid hormone secreted by the
growing follicle is
A) LH.
B) FSH.
C) inhibin.
D) GnRH.
E) estradiol.
Answer: E
52) The hypothalamic hormone that stimulates hormone secretion by the
anterior pituitary gland is
A) LH.
B) FSH.
C)
inhibin.
D) GnRH.
E) estradiol.
Answer: D
53) The hormone progesterone is produced
A) in the pituitary
and acts directly on the ovary.
B) in the uterus and acts
directly on the pituitary.
C) in the ovary and acts directly on
the uterus.
D) in the pituitary and acts directly on the uterus.
E) in the uterus and acts directly on the pituitary.
Answer: C
54) Menopause is characterized by
A) reduced synthesis of
ovarian steroids despite high levels of gonadotropin hormones.
B) a decline in production of the gonadotropin hormones by the
anterior pituitary gland.
C) wearing away of the uterine
endometrium.
D) an increase in the blood supply to the
ovaries.
E) a halt in the synthesis of gonadotropin-releasing
hormone by the brain.
Answer: A
55) For normal human fertilization to occur,
A) many ova must
be released.
B) the uterus must be enlarged.
C) only one
sperm need penetrate one egg.
D) secretion of pituitary FSH and
LH must decrease.
E) the secondary oocyte must implant in the uterus.
Answer: C
56) Fertilization of human eggs usually takes place in the
A)
ovary.
B) uterus.
C) vagina.
D) oviduct.
E) cervix.
Answer: D
57) What is the embryo-produced hormone that maintains progesterone
and estrogen secretion by the corpus luteum through the first
trimester of pregnancy?
A) luteinizing hormone (LH)
B)
follicle-stimulating hormone (FSH)
C) progesterone
D)
human chorionic gonadotropin (HCG)
E) gonadotropin-releasing
hormone (GnRH)
Answer: D
58) The hypothalamic hormone that triggers the secretion of FSH is
A) luteinizing hormone (LH).
B) estradiol.
C)
progesterone.
D) human chorionic gonadotropin (HCG).
E)
gonadotropin-releasing hormone (GnRH).
Answer: E
59) Labor contractions can be increased by the medical use of a
synthetic drug that mimics the action of
A) inhibin.
B)
luteinizing hormone.
C) oxytocin.
D) prolactin.
E) vasopressin.
Answer: C
60) A high rate of metabolic activity is maintained in the pregnant
uterus by
A) inhibin.
B) testosterone.
C) oxytocin.
D) prolactin.
E) progesterone.
Answer: E
61) The secretion of follicle-stimulating hormone from the anterior
pituitary gland is reduced by
A) inhibin.
B) luteinizing
hormone.
C) oxytocin.
D) prolactin.
E) vasopressin.
Answer: A
62) The drug RU-486 functions by
A) inhibiting release of
gonadotropins from the pituitary.
B) blocking progesterone
receptors in the uterus.
C) preventing release of the secondary
oocyte from the ovary.
D) reducing sexual interest.
E)
prolonging the endurance of the corpus luteum.
Answer: B
63) Human fertility drugs taken by women increase the chance of
multiple births, probably because they
A) enhance implantation
opportunities.
B) stimulate the development of many ovarian
follicles.
C) mimic progesterone action in the uterus.
D)
stimulate steroidogenesis.
E) delay parturition.
Answer: B
64) The thin layer of the developing embryo which secretes a hormone
that keeps the corpus luteum functioning is the
A) cervix.
B) endometrium.
C) amnion.
D) plasma membrane.
E) chorion.
Answer: E
65) In excreted urine, a reliable "marker" that a pregnancy
has initiated is
A) progesterone.
B) estrogen.
C)
follicle-stimulating hormone.
D) chorionic gonadotropin.
E) hypothalamic-releasing hormones.
Answer: D
66) The "immunotolerance" of a pregnant woman toward her
unborn child is the result of
A) the tenacity with which the
unborn child's immune system counteracts the woman's immune system.
B) the relative quiescence of a pregnant woman's immune system
compared to when she was not pregnant.
C) the complete physical
separation of her cells from those of the unborn child.
D) the
unborn child having enough of the woman's identity so as to escape
detection as foreign.
E) modern medical intervention during
every pregnancy.
Answer: B
67) Among these contraception methods, the highest risk of accidental
pregnancy accompanies
A) the use of a diaphragm.
B) the
use of a condom.
C) the practice of coitus interruptus.
D)
a verified vasectomy.
E) the practice of the "rhythm method."
Answer: C
68) The use of birth control pills (oral contraceptives)
A)
reduces the incidence of ovulation.
B) prevents fertilization by
keeping the sperm and egg physically separated by a mechanical
barrier.
C) prevents implantation of an embryo.
D)
prevents sperm from exiting the male urethra.
E) prevents
oocytes from entering the uterus.
Answer: A
69) Two contraceptive methods that are generally irreversible and
which block the gametes from moving to a site where fertilization can
occur are
A) the male condom and female condom.
B) the
male condom and oral contraceptives.
C) vasectomy and tubal
ligation.
D) coitus interruptus and rhythm method.
E) the
diaphragm and subcutaneous progesterone implant.
Answer: C
70) Tubal ligation
A) reduces the incidence of ovulation.
B) prevents fertilization by preventing sperm from entering the
uterus.
C) prevents implantation of an embryo.
D) prevents
sperm from exiting the male urethra.
E) prevents oocytes from
entering the uterus.
Answer: E
71) A vasectomy
A) eliminates spermatogenesis.
B)
eliminates testosterone synthesis.
C) prevents implantation of
an embryo.
D) prevents sperm from exiting the male urethra.
E) prevents oocytes from entering the uterus.
Answer: D
72) Time-release progesterone implants function in contraception by
A) increasing the frequency of ovulation.
B) thickening
the cervical and uterine mucus to impair sperm movement.
C)
increasing gonadotropin secretion to abnormally high levels.
D)
reducing libido.
E) activating inflammation responses in the uterus.
Answer: B
73) For lactation to take place, the synthesis of breast milk and its
release from the mammary gland, respectively, are caused by
A)
testosterone and dihydrotestosterone.
B) estrogen and
progesterone.
C) cortisol and testosterone.
D) prolactin
and oxytocin.
E) luteinizing hormone and follicle-stimulating hormone.
Answer: D
74) So-called "combination" birth control pills function in
contraception by
A) inhibiting the release of GnRH, FSH, and LH.
B) irritating the uterine lining so as to prevent implantation.
C) causing spontaneous abortions.
D) blocking progesterone
receptors, so that pregnancy cannot be maintained.
E) binding to
and inactivating any sperm that enter the oviduct.
Answer: A

Refer to the following figure, which diagrams the reproductive
anatomy of the human female, to answer the following question.
75) In the above figure, which letter points to the corpus
luteum?
A) A
B) B
C) C
D) D
E) E
Answer: D

Refer to the following figure, which diagrams the reproductive
anatomy of the human female, to answer the following question.
76) In the above figure, which letter points to the oviduct?
A) A
B) B
C) C
D) D
E) E
Answer: B

Refer to the following figure, which diagrams the reproductive
anatomy of the human female, to answer the following question.
77) In the above figure, which letter points to the cervix?
A) A
B) B
C) C
D) D
E) E
Answer: C

Refer to the following figure, which diagrams the reproductive
anatomy of the human female, to answer the following question.
78) In the above figure, which letter points to the uterus?
A) A
B) B
C) C
D) D
E) E
Answer: A

Refer to the following figure, which diagrams the reproductive
anatomy of the human female, to answer the following question.
79) In the above figure, which letter points to the endometrium?
A) A
B) B
C) C
D) D
E) E
Answer: E

Refer to the following figure, which diagrams the reproductive
anatomy of the human male, to answer the following question.
80) In the above figure, which letter points to the scrotum?
A) A
B) B
C) C
D) D
E) E
Answer: C

Refer to the following figure, which diagrams the reproductive
anatomy of the human male, to answer the following question.
81) In the above figure, which letter points to the testis?
A) A
B) B
C) C
D) D
E) E
Answer: A

Refer to the following figure, which diagrams the reproductive
anatomy of the human male, to answer the following question.
82) In the above figure, which letter points to the urethra?
A) A
B) B
C) C
D) D
E) E
Answer: E

Refer to the following figure, which diagrams the reproductive
anatomy of the human male, to answer the following question.
83) In the above figure, which letter points to the prostate
gland?
A) A
B) B
C) C
D) D
E) E
Answer: B

Refer to the following figure, which diagrams the reproductive
anatomy of the human male, to answer the following question.
84) In the above figure, which letter points to the vas
deferens?
A) A
B) B
C) C
D) D
E) E
Answer: D
85) You observe vertebrate organisms with parthenogenetic
reproduction, internal development of embryos, and the lack of
parental care for its young. Based on this information, you should
categorize these organisms as
A) earthworms.
B) lizards.
C) birds.
D) frogs.
E) mammals.
Answer: B
86) Imagine that a woman is in the final week of her pregnancy. Her
doctor gives her an injection of oxytocin. The likely result of this
is that the pregnant woman would
A) undergo the loss of oxytocin
receptors from her uterine smooth muscle cells.
B) stop
secreting prostaglandins from the placenta.
C) undergo vigorous
contractions of her uterine muscles.
D) increase the synthesis
and secretion of progesterone.
E) be prevented from lactation.
Answer: C
87) Which of the following characterizes parthenogenesis?
A) An
individual may change its sex during its lifetime.
B)
Specialized groups of cells grow into new individuals.
C) An
organism is first a male and then a female.
D) An egg develops
without being fertilized.
E) Both mates have male and female
reproductive organs.
Answer: D
88) In male mammals, excretory and reproductive systems share
A) the testes.
B) the urethra.
C) the seminal
vesicle.
D) the vas deferens.
E) the prostate.
Answer: B
89) Which of the following is not properly paired?
A)
seminiferous tubulecervix
B) Sertoli cellsfollicle cells
C) testosteroneestradiol
D) scrotumlabia majora
E)
vas deferensoviduct
Answer: A
90) Peaks of LH and FSH production occur during
A) the
menstrual flow phase of the uterine cycle.
B) the beginning of
the follicular phase of the ovarian cycle.
C) the period just
before ovulation.
D) the end of the luteal phase of the ovarian
cycle.
E) the secretory phase of the menstrual cycle.
Answer: C
91) During human gestation, rudiments of all organs develop
A)
in the first trimester.
B) in the second trimester.
C) in
the third trimester.
D) while the embryo is in the oviduct.
E) during the blastocyst stage.
Answer: A
92) Which of the following is a true statement?
A) All mammals
have menstrual cycles.
B) The endometrial lining is shed in
menstrual cycles but reabsorbed in estrous cycles.
C) Estrous
cycles are more frequent than menstrual cycles.
D) Estrous
cycles are not controlled by hormones.
E) Ovulation occurs
before the endometrium thickens in estrous cycles.
Answer: B
93) For which of the following is the number the same in
spermatogenesis and oogenesis?
A) interruptions in meiotic
divisions
B) functional gametes produced by meiosis
C)
meiotic divisions required to produce each gamete
D) gametes
produced in a given time period
E) different cell types produced
by meiosis
Answer: C
94) Which statement about human reproduction is false?
A)
Fertilization occurs in the oviduct.
B) Effective hormonal
contraceptives are currently available only for females.
C) An
oocyte completes meiosis after a sperm penetrates it.
D) The
earliest stages of spermatogenesis occur closest to the lumen of the
seminiferous tubules.
E) Spermatogenesis and oogenesis require
different temperatures.
Answer: D