Question 1

When female fruit flies mate with two different males on the same day,

Accepted Answer

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. 
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.

Question 2

Evidence that parthenogenic whiptail lizards are derived from sexually reproducing ancestors includes

Accepted Answer

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. 
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.

Question 3

The secretion of follicle stimulating hormone from the pituitary is reduced by

Accepted Answer

A) inhibin. 
B) luteinizing hormone. 
C) oxytocin. 
D) prolactin. 
E) vasopressin. 
A) inhibin. 
B) luteinizing hormone. 
C) oxytocin. 
D) prolactin. 
E) vasopressin.

Question 4

The breakdown and discharge of the soft uterine tissues that occurs if no egg is fertilized is called

Accepted Answer

A) menstruation. 
B) lactation. 
C) fertilization. 
D) menopause. 
E) ovulation. 
A) menstruation. 
B) lactation. 
C) fertilization. 
D) menopause. 
E) ovulation.

Question 5

Asexual reproduction results in greater reproductive success than does sexual reproduction

Accepted Answer

A) when pathogens are rapidly diversifying. 
B) when a species has accumulated numerous deleterious mutations. 
C) when there is some potential for rapid overpopulation. 
D) when a species is expanding into diverse geographic settings. 
E) when a species is in stable and favorable environments. 
A) when pathogens are rapidly diversifying. 
B) when a species has accumulated numerous deleterious mutations. 
C) when there is some potential for rapid overpopulation. 
D) when a species is expanding into diverse geographic settings. 
E) when a species is in stable and favorable environments.

Question 6

The hormone progesterone is produced

Accepted Answer

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. 
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.

Question 7

Sexual reproduction

Accepted Answer

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. 
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.

Question 8

In close comparisons, external fertilization often yields more offspring than does internal fertilization, but internal fertilization offers the advantage that

Accepted Answer

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. 
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.

Question 9

Prior to ovulation, the steroid hormone secreted by the growing follicle is

Accepted Answer

A) LH. 
B) FSH. 
C) inhibin. 
D) GnRH. 
E) estradiol. 
A) LH. 
B) FSH. 
C) inhibin. 
D) GnRH. 
E) estradiol.

Question 10

Which of the following statements about human reproduction is False?

Accepted Answer

A) Fertilization occurs in the oviduct. 
B) Effective hormonal contraceptives are currently available only for females. 
C) Oocytes complete meiosis after fertilization. 
D) The earliest stages of spermatogenesis occur closest to the lumen of the seminiferous tubules. 
E) Spermatogenesis and oogenesis require different temperatures. 
A) Fertilization occurs in the oviduct. 
B) Effective hormonal contraceptives are currently available only for females. 
C) Oocytes complete meiosis after fertilization. 
D) The earliest stages of spermatogenesis occur closest to the lumen of the seminiferous tubules. 
E) Spermatogenesis and oogenesis require different temperatures.

Question 11

All individuals of a particular species of whiptail lizards are females. Their reproductive efforts depend on

Accepted Answer

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. 
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.

Question 12

Which pair includes two contraceptive methods that are generally irreversible means to block gametes from moving to a site where fertilization can occur?

Accepted Answer

A) male condom and female condom 
B) male condom and oral contraceptives 
C) vasectomy and tubal ligation 
D) coitus interruptus and rhythm method 
E) diaphragm and subcutaneous progesterone implant 
A) male condom and female condom 
B) male condom and oral contraceptives 
C) vasectomy and tubal ligation 
D) coitus interruptus and rhythm method 
E) diaphragm and subcutaneous progesterone implant

Question 13

An advantage of asexual reproduction is that

Accepted Answer

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 readily rid itself of harmful mutations. 
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 readily rid itself of harmful mutations.

Question 14

Labor contractions would be increased by the use of a synthetic drug that mimics the action of

Accepted Answer

A) inhibin. 
B) luteinizing hormone. 
C) oxytocin. 
D) prolactin. 
E) vasopressin. 
A) inhibin. 
B) luteinizing hormone. 
C) oxytocin. 
D) prolactin. 
E) vasopressin.

Question 15

Ovulation is the follicular response to a burst of secretion of

Accepted Answer

A) LH. 
B) progesterone. 
C) inhibin. 
D) prolactin. 
E) estradiol. 
A) LH. 
B) progesterone. 
C) inhibin. 
D) prolactin. 
E) estradiol.

Question 16

A high rate of metabolic activity is maintained in the pregnant uterus by

Accepted Answer

A) inhibin. 
B) testosterone. 
C) oxytocin. 
D) prolactin. 
E) progesterone. 
A) inhibin. 
B) testosterone. 
C) oxytocin. 
D) prolactin. 
E) progesterone.

Question 17

An oocyte released from a human ovary enters the oviduct as a result of

Accepted Answer

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 pulsing uterus into the oviduct. 
E) Peristaltic contraction of ovarian muscles. 
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 pulsing uterus into the oviduct. 
E) Peristaltic contraction of ovarian muscles.

Question 18

Increasing and holding the temperature of the scrotum by 2°C, near the normal body-core temperature, would

Accepted Answer

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 fertility of the man by impairing by abolishing sexual interest. 
D) increase the fertility of the affected man by enhancing the rate of spermatogenesis. 
E) have no effect on male reproductive processes. 
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 fertility of the man by impairing by abolishing sexual interest. 
D) increase the fertility of the affected man by enhancing the rate of spermatogenesis. 
E) have no effect on male reproductive processes.

Question 19

Human sperm cells first arise in the

Accepted Answer

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

Question 20

Most of the noncellular fluid in ejaculated human semen is composed of

Accepted Answer

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. 
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.

Exam 46: Animal Reproduction

When female fruit flies mate with two different males on the same day,

Evidence that parthenogenic whiptail lizards are derived from sexually reproducing ancestors includes

The secretion of follicle stimulating hormone from the pituitary is reduced by

The breakdown and discharge of the soft uterine tissues that occurs if no egg is fertilized is called

Asexual reproduction results in greater reproductive success than does sexual reproduction

The hormone progesterone is produced

Sexual reproduction

In close comparisons, external fertilization often yields more offspring than does internal fertilization, but internal fertilization offers the advantage that

Prior to ovulation, the steroid hormone secreted by the growing follicle is

Which of the following statements about human reproduction is False?

All individuals of a particular species of whiptail lizards are females. Their reproductive efforts depend on

Which pair includes two contraceptive methods that are generally irreversible means to block gametes from moving to a site where fertilization can occur?

An advantage of asexual reproduction is that

Labor contractions would be increased by the use of a synthetic drug that mimics the action of

Ovulation is the follicular response to a burst of secretion of

A high rate of metabolic activity is maintained in the pregnant uterus by

An oocyte released from a human ovary enters the oviduct as a result of

Increasing and holding the temperature of the scrotum by 2°C, near the normal body-core temperature, would

Human sperm cells first arise in the

Most of the noncellular fluid in ejaculated human semen is composed of

Introduction: Themes in the Study of Life

The Chemical Context of Life

Water and the Fitness of the Environment

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Control of Gene Expression

Viruses

Biotechnology

Genomes and Their Evolution

Descent With Modification: a Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity Ii: the Evolution of Seed Plants

Fungi

An Introduction to Animal Diversity

Invertebrates

Vertebrates

Plant Structure, Growth, and Development

Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Development

Neurons, Synapses, and Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems

Conservation Biology and Restoration Ecology

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