Question 1

Animals with reproduction dependent on internal fertilization need not have

Accepted Answer

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. 
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.

Question 2

The drug RU-486 functions by

Accepted Answer

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. 
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.

Question 3

Mature human sperm and ova are similar in that

Accepted Answer

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. 
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.

Question 4

Sperm cells are stored within human males in the

Accepted Answer

A)  urethra. 
B)  prostate. 
C)  epididymis. 
D)  seminal vesicles. 
E)  bulbourethral gland. 
A)  urethra. 
B)  prostate. 
C)  epididymis. 
D)  seminal vesicles. 
E)  bulbourethral gland.

Question 5

The hypothalamic hormone that triggers the secretion of FSH is

Accepted Answer

A)  luteinizing hormone (LH). 
B)  estradiol. 
C)  progesterone. 
D)  human chorionic gonadotropin (HCG). 
E)  gonadotropin-releasing hormone (GnRH). 
A)  luteinizing hormone (LH). 
B)  estradiol. 
C)  progesterone. 
D)  human chorionic gonadotropin (HCG). 
E)  gonadotropin-releasing hormone (GnRH).

Question 6

Testosterone is synthesized primarily by the

Accepted Answer

A)  sperm cells. 
B)  hypothalamus. 
C)  Leydig cells. 
D)  anterior pituitary gland. 
E)  seminiferous tubules. 
A)  sperm cells. 
B)  hypothalamus. 
C)  Leydig cells. 
D)  anterior pituitary gland. 
E)  seminiferous tubules.

Question 7

Genetic mutations in asexually reproducing organisms lead to more evolutionary change than do genetic mutations in sexually reproducing ones because

Accepted Answer

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. 
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.

Question 8

-In the above figure, which letter points to the scrotum?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 9

Most flatworms, including parasitic liver flukes, are hermaphrodites that form zygotes as the result of

Accepted Answer

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. 
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.

Question 10

A contraceptive pill that continuously inhibits the release of GnRH from the hypothalamus will

Accepted Answer

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. 
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.

Question 11

Refer to the following figure, which diagrams the reproductive anatomy of the human female, to answer the following questions.
  
-In the above figure, which letter points to the corpus luteum?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 12

At the end of a nonpregnant ovarian cycle, the breakdown and discharge of the soft uterine tissues 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 13

In correct chronological order, the three phases of the human ovarian cycle are

Accepted Answer

A)  menstrual → ovulation → luteal. 
B)  follicular → luteal → secretory. 
C)  menstrual → proliferative → secretory. 
D)  follicular → ovulation → luteal. 
E)  proliferative → luteal → ovulation. 
A)  menstrual → ovulation → luteal. 
B)  follicular → luteal → secretory. 
C)  menstrual → proliferative → secretory. 
D)  follicular → ovulation → luteal. 
E)  proliferative → luteal → ovulation.

Question 14

A male's "primary" sex characteristics include

Accepted Answer

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. 
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.

Question 15

Prior to ovulation, the primary 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 16

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 17

-In the above figure, which letter points to the testis?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 18

During human gestation, rudiments of all organs develop

Accepted Answer

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. 
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.

Question 19

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 20

Organisms with a reproductive pattern that produces shelled amniotic eggs generally

Accepted Answer

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. 
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.

Exam 46: Animal Reproduction

Animals with reproduction dependent on internal fertilization need not have

The drug RU-486 functions by

Mature human sperm and ova are similar in that

Sperm cells are stored within human males in the

The hypothalamic hormone that triggers the secretion of FSH is

Testosterone is synthesized primarily by the

Genetic mutations in asexually reproducing organisms lead to more evolutionary change than do genetic mutations in sexually reproducing ones because

-In the above figure, which letter points to the scrotum?

Most flatworms, including parasitic liver flukes, are hermaphrodites that form zygotes as the result of

A contraceptive pill that continuously inhibits the release of GnRH from the hypothalamus will

Refer to the following figure, which diagrams the reproductive anatomy of the human female, to answer the following questions. -In the above figure, which letter points to the corpus luteum?

At the end of a nonpregnant ovarian cycle, the breakdown and discharge of the soft uterine tissues is called

In correct chronological order, the three phases of the human ovarian cycle are

A male's "primary" sex characteristics include

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

Human sperm cells first arise in the

-In the above figure, which letter points to the testis?

During human gestation, rudiments of all organs develop

Sexual reproduction

Organisms with a reproductive pattern that produces shelled amniotic eggs generally

Introduction: Themes in the Study of Life

The Chemical Context of Life

Water and Life

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 and Fermentation

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

Regulation 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 Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure, Growth, and Development

Resource Acquisition and 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 and Restoration Ecology

Conservation Biology and Global Change

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