Question 1

Peaks of LH and FSH production occur during

Accepted Answer

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. 
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.

Question 2

In excreted urine, a reliable "marker" that a pregnancy has initiated is

Accepted Answer

A) progesterone. 
B) estrogen. 
C) follicle-stimulating hormone. 
D) chorionic gonadotropin. 
E) hypothalamic-releasing hormones. 
A) progesterone. 
B) estrogen. 
C) follicle-stimulating hormone. 
D) chorionic gonadotropin. 
E) hypothalamic-releasing hormones.

Question 3

In vertebrate animals, spermatogenesis and oogenesis differ in that

Accepted Answer

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. 
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.

Question 4

For the 10 days following ovulation in a nonpregnant menstrual cycle, the main source of progesterone is the

Accepted Answer

A) adrenal cortex. 
B) anterior pituitary. 
C) corpus luteum. 
D) developing follicle. 
E) placenta. 
A) adrenal cortex. 
B) anterior pituitary. 
C) corpus luteum. 
D) developing follicle. 
E) placenta.

Question 5

The hypothalamic hormone that stimulates hormone secretion by the anterior pituitary gland is

Accepted Answer

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

Question 6

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

Accepted Answer

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

Question 7

Which of the following patterns of reproduction are found only among invertebrate animals?

Accepted Answer

A) sexual and asexual reproduction 
B) external and internal fertilization 
C) hermaphroditism and parthenogenesis 
D) pheromonal and hormonal coordination 
E) fission and budding 
A) sexual and asexual reproduction 
B) external and internal fertilization 
C) hermaphroditism and parthenogenesis 
D) pheromonal and hormonal coordination 
E) fission and budding

Question 8

The secretion of follicle-stimulating hormone from the anterior pituitary gland 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 9

Regeneration, the regrowth of lost body parts, normally follows

Accepted Answer

A) all types of asexual reproduction. 
B) all types of sexual reproduction. 
C) fission. 
D) fragmentation. 
E) parthenogenesis. 
A) all types of asexual reproduction. 
B) all types of sexual reproduction. 
C) fission. 
D) fragmentation. 
E) parthenogenesis.

Question 10

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.
-Which of the following is not properly paired?

Accepted Answer

A) seminiferous tubule-cervix 
B) Sertoli cells-follicle cells 
C) testosterone-estradiol 
D) scrotum-labia majora 
E) vas deferens-oviduct 
A) seminiferous tubule-cervix 
B) Sertoli cells-follicle cells 
C) testosterone-estradiol 
D) scrotum-labia majora 
E) vas deferens-oviduct

Question 11

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.

Question 12

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 13

The moment of orgasm is characterized by

Accepted Answer

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. 
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.

Question 14

The primary difference between estrous and menstrual cycles is that

Accepted Answer

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) behavioural 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. 
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) behavioural 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.

Question 15

Refer to the following figure, which diagrams the reproductive anatomy of the human male, to answer the following questions.
  
-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 16

Animals with reproduction dependent on internal fertilization need not have

Accepted Answer

A) any copulatory organs. 
B) a receptacle that receives sperm. 
C) behavioural interaction between males and females. 
D) internal development of embryos. 
E) haploid gametes. 
A) any copulatory organs. 
B) a receptacle that receives sperm. 
C) behavioural interaction between males and females. 
D) internal development of embryos. 
E) haploid gametes.

Question 17

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

Accepted Answer

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

Question 18

Which of the following is a true statement?

Accepted Answer

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. 
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.

Question 19

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 20

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

Accepted Answer

A) the requirement for male-like behaviours 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 favourable weather conditions for ovulation to occur. 
E) the persistence of a vestigial penis among some of the females. 
A) the requirement for male-like behaviours 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 favourable weather conditions for ovulation to occur. 
E) the persistence of a vestigial penis among some of the females.

Exam 46: Animal Reproduction

Peaks of LH and FSH production occur during

In excreted urine, a reliable "marker" that a pregnancy has initiated is

In vertebrate animals, spermatogenesis and oogenesis differ in that

For the 10 days following ovulation in a nonpregnant menstrual cycle, the main source of progesterone is the

The hypothalamic hormone that stimulates hormone secretion by the anterior pituitary gland is

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

Which of the following patterns of reproduction are found only among invertebrate animals?

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

Regeneration, the regrowth of lost body parts, normally follows

Organisms with a reproductive pattern that produces shelled amniotic eggs generally

Sperm cells are stored within human males in the

The moment of orgasm is characterized by

The primary difference between estrous and menstrual cycles is that

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

Animals with reproduction dependent on internal fertilization need not have

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

Which of the following is a true statement?

The drug RU-486 functions by

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

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

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