Question 1

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 2

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 3

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 oviduct?

Accepted Answer

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

Question 4

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 5

A vasectomy

Accepted Answer

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. 
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.

Question 6

In close comparisons, external fertilization often yields more offspring than does internal fertilization. However, 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 7

Like many other fishes, bluehead wrasses utilize harem mating as they reproduce sexually. However, unlike most fishes,

Accepted Answer

A) they are simultaneous hermaphrodites. 
B) they function without any signalling 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. 
A) they are simultaneous hermaphrodites. 
B) they function without any signalling 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.

Question 8

The incidence of tubal or ectopic pregnancy can be increased by all of the following conditions except

Accepted Answer

A) endometriosis. 
B) sexually transmitted infection. 
C) uterine bacterial infection. 
D) cilia damage in Fallopian tubes. 
E) natural vaginal birth. 
A) endometriosis. 
B) sexually transmitted infection. 
C) uterine bacterial infection. 
D) cilia damage in Fallopian tubes. 
E) natural vaginal birth.

Question 9

Time-release progesterone implants function in contraception by

Accepted Answer

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. 
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.

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

In humans, the follicular cells that remain behind in the ovary following ovulation become

Accepted Answer

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. 
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.

Question 12

External chemical signals that coordinate potential reproductive partners are called

Accepted Answer

A) hormones. 
B) pheromones. 
C) paracrine signals. 
D) cytokines. 
E) gametes. 
A) hormones. 
B) pheromones. 
C) paracrine signals. 
D) cytokines. 
E) gametes.

Question 13

Use the following information for the next few questions.
The manager of a large commercial aquaculture station wants to bring silver carp (Hypophthalmichthys molitrix) into Canada for use in his facility. Many government organizations are worried about the carp escaping into local waterways and devastating native flora and fauna.
-What are the side effects of hormonal sterilization in male fish? I. production of egg proteins
II. impaired testes development
III. impaired sperm development

Accepted Answer

A) I only 
B) II only 
C) I, II, and III 
D) I and II 
E) I and III 
A) I only 
B) II only 
C) I, II, and III 
D) I and II 
E) I and III

Question 14

Among mammals, the male and female genital structures that consist mostly of erectile tissue include the

Accepted Answer

A) penis and clitoris. 
B) vas deferens and oviduct. 
C) testes and ovaries. 
D) seminiferous tubules and hymen. 
E) prostate and ovaries. 
A) penis and clitoris. 
B) vas deferens and oviduct. 
C) testes and ovaries. 
D) seminiferous tubules and hymen. 
E) prostate and ovaries.

Question 15

At the time of fertilization, the complete maturation of each oogonium has resulted in

Accepted Answer

A) one secondary oocyte. 
B) two primary oocytes. 
C) four secondary oocytes. 
D) four primary oocytes. 
E) four zygotes. 
A) one secondary oocyte. 
B) two primary oocytes. 
C) four secondary oocytes. 
D) four primary oocytes. 
E) four zygotes.

Question 16

Sexual reproduction patterns include the example of

Accepted Answer

A) fragmentation. 
B) budding. 
C) hermaphroditism. 
D) parthenogenesis. 
E) fission. 
A) fragmentation. 
B) budding. 
C) hermaphroditism. 
D) parthenogenesis. 
E) fission.

Question 17

Environmental cues that influence the timing of reproduction generally do so by

Accepted Answer

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. 
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.

Question 18

Asexual reproduction results in greater reproductive success than does sexual reproduction when

Accepted Answer

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 favourable environments. 
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 favourable environments.

Question 19

Two contraceptive methods that are generally irreversible and that block the gametes from moving to a site where fertilization can occur are

Accepted Answer

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. 
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.

Question 20

Use the following information for the next few questions.
The manager of a large commercial aquaculture station wants to bring silver carp (Hypophthalmichthys molitrix) into Canada for use in his facility. Many government organizations are worried about the carp escaping into local waterways and devastating native flora and fauna.
-In male mammals, excretory and reproductive systems share

Accepted Answer

A) the testes. 
B) the urethra. 
C) the seminal vesicle. 
D) the vas deferens. 
E) the prostate. 
A) the testes. 
B) the urethra. 
C) the seminal vesicle. 
D) the vas deferens. 
E) the prostate.

Exam 46: Animal Reproduction

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

Testosterone is synthesized primarily by the

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 oviduct?

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

A vasectomy

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

Like many other fishes, bluehead wrasses utilize harem mating as they reproduce sexually. However, unlike most fishes,

The incidence of tubal or ectopic pregnancy can be increased by all of the following conditions except

Time-release progesterone implants function in contraception by

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

In humans, the follicular cells that remain behind in the ovary following ovulation become

External chemical signals that coordinate potential reproductive partners are called

Among mammals, the male and female genital structures that consist mostly of erectile tissue include the

At the time of fertilization, the complete maturation of each oogonium has resulted in

Sexual reproduction patterns include the example of

Environmental cues that influence the timing of reproduction generally do so by

Asexual reproduction results in greater reproductive success than does sexual reproduction when

Two contraceptive methods that are generally irreversible and that block the gametes from moving to a site where fertilization can occur are

Introduction: Evolution and Themes of Biology

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

Dna Tools and 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 Signalling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behaviour

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

Filters