Question 1

The enzyme-containing cap at the front of the head of a sperm is called the _______.

Accepted Answer

The answer of The enzyme-containing cap at the front of...

Question 2

Which of the following statements about fertilization is false?

Accepted Answer

A)  The egg permits several sperm to enter it. 
B)  The plasma membranes of sperm and egg fuse. 
C)  The egg is activated and stimulated to begin development. 
D)  Species-specific recognition occurs between egg and sperm. 
E)  During the acrosomal reaction, enzymes spill from a cap on the head of the sperm and digest a path through the protective layers surrounding the egg. 
A)  The egg permits several sperm to enter it. 
B)  The plasma membranes of sperm and egg fuse. 
C)  The egg is activated and stimulated to begin development. 
D)  Species-specific recognition occurs between egg and sperm. 
E)  During the acrosomal reaction, enzymes spill from a cap on the head of the sperm and digest a path through the protective layers surrounding the egg.

Question 3

Which of the following statements about asexual reproduction is false?

Accepted Answer

A)  It occurs in some species of fishes, amphibians, and reptiles. 
B)  Asexually reproducing species tend to live in variable environments. 
C)  Asexually reproducing species tend to be sessile. 
D)  Asexually reproducing species tend to live in sparse populations. 
E)  One method of asexual reproduction is parthenogenesis. 
A)  It occurs in some species of fishes, amphibians, and reptiles. 
B)  Asexually reproducing species tend to live in variable environments. 
C)  Asexually reproducing species tend to be sessile. 
D)  Asexually reproducing species tend to live in sparse populations. 
E)  One method of asexual reproduction is parthenogenesis.

Question 4

If the egg is not fertilized following ovulation, the follicle cells

Accepted Answer

A)  move with the egg into the oviduct. 
B)  degenerate. 
C)  develop into a corpus luteum. 
D)  stop secreting hormones. 
E)  begin to develop a new egg. 
A)  move with the egg into the oviduct. 
B)  degenerate. 
C)  develop into a corpus luteum. 
D)  stop secreting hormones. 
E)  begin to develop a new egg.

Question 5

Which of the following is the most likely advantage of hermaphroditism?

Accepted Answer

A)  For a given species, every organism is a potential mate. 
B)  As compared to reproduction in dioecious species, simpler behavior patterns are required for mate selection. 
C)  More rapid reproduction of genetically successful individuals is possible through asexual reproduction as compared to sexual reproduction. 
D)  Complex hormonal control and feedback mechanisms are not required for reproduction. 
E)  Both b and c 
A)  For a given species, every organism is a potential mate. 
B)  As compared to reproduction in dioecious species, simpler behavior patterns are required for mate selection. 
C)  More rapid reproduction of genetically successful individuals is possible through asexual reproduction as compared to sexual reproduction. 
D)  Complex hormonal control and feedback mechanisms are not required for reproduction. 
E)  Both b and c

Question 6

A vasectomy is a minor operation that involves removing a small section of the _______ and tying off the loose ends.

Accepted Answer

A)  epididymis 
B)  urethra 
C)  oviduct 
D)  vas deferens 
E)  seminiferous tubules 
A)  epididymis 
B)  urethra 
C)  oviduct 
D)  vas deferens 
E)  seminiferous tubules

Question 7

As opposed to viviparous animals, _______ animals lay eggs in the environment, and their offspring go through embryonic stages outside the body of the mother.

Accepted Answer

The answer of As opposed to viviparous animals, _______ animals...

Question 8

In the female sexual response, the structure that is most sensitive is the

Accepted Answer

A)  breast. 
B)  clitoris. 
C)  labium. 
D)  uterus. 
E)  vagina. 
A)  breast. 
B)  clitoris. 
C)  labium. 
D)  uterus. 
E)  vagina.

Question 9

Which of the following statements about asexual reproduction is false?

Accepted Answer

A)  Cell division occurs only by mitosis. 
B)  Populations can grow until limited by resources. 
C)  Single individuals can produce offspring. 
D)  Genetic diversity in a population is generated in changing environments. 
E)  No energy expenditure is required for mating and fertilization. 
A)  Cell division occurs only by mitosis. 
B)  Populations can grow until limited by resources. 
C)  Single individuals can produce offspring. 
D)  Genetic diversity in a population is generated in changing environments. 
E)  No energy expenditure is required for mating and fertilization.

Question 10

Why do mammalian spermatocytes remain in cytoplasmic contact throughout their development?

Accepted Answer

A)  To increase probability of fertilization 
B)  Because of the asymmetry of sex chromosomes in males 
C)  To share information on either the X or Y chromosome of neighboring spermatocytes 
D)  Both b and c 
E)  All of the above 
A)  To increase probability of fertilization 
B)  Because of the asymmetry of sex chromosomes in males 
C)  To share information on either the X or Y chromosome of neighboring spermatocytes 
D)  Both b and c 
E)  All of the above

Question 11

Use the following to answer questions:
Refer to the diagram below of the human male reproductive system.  
-Based on the diagram, which of the following statements is true?

Accepted Answer

A)  While exiting the male, sperm go from point 3 to point 4 to point 5 to point 6. 
B)  The structure shown at point 7 produces a neutralizing and lubricating solution. 
C)  The material shown at point 8 is muscle tissue that contracts to produce an erection. 
D)  Sperm are stored in the structure at point 4. 
E)  Seminal fluids are produced by the structures at points 1 and 3. 
A)  While exiting the male, sperm go from point 3 to point 4 to point 5 to point 6. 
B)  The structure shown at point 7 produces a neutralizing and lubricating solution. 
C)  The material shown at point 8 is muscle tissue that contracts to produce an erection. 
D)  Sperm are stored in the structure at point 4. 
E)  Seminal fluids are produced by the structures at points 1 and 3.

Question 12

External fertilization

Accepted Answer

A)  is typical of terrestrial animals. 
B)  requires a penis. 
C)  can occur when a spermatophore is transferred. 
D)  occurs in some, but not all, aquatic animals. 
E)  is confined to invertebrates. 
A)  is typical of terrestrial animals. 
B)  requires a penis. 
C)  can occur when a spermatophore is transferred. 
D)  occurs in some, but not all, aquatic animals. 
E)  is confined to invertebrates.

Question 13

The _______ of the human male contains sperm and secretions from bulbourethral glands, seminal vesicles, and the prostate gland.

Accepted Answer

ejaculate

Question 14

Contractions of muscles in the uterine wall and milk letdown are stimulated by

Accepted Answer

A)  progesterone. 
B)  estrogen. 
C)  prolactin. 
D)  oxytocin. 
E)  human chorionic gonadotropin. 
A)  progesterone. 
B)  estrogen. 
C)  prolactin. 
D)  oxytocin. 
E)  human chorionic gonadotropin.

Question 15

Which of the following statements about oogenesis is false?

Accepted Answer

A)  The polar bodies degenerate after the second meiotic division. 
B)  The ovum produced is haploid. 
C)  The major growth phase of the primary oocyte occurs in prophase I. 
D)  The primary oocyte is haploid. 
E)  The secondary oocyte is haploid. 
A)  The polar bodies degenerate after the second meiotic division. 
B)  The ovum produced is haploid. 
C)  The major growth phase of the primary oocyte occurs in prophase I. 
D)  The primary oocyte is haploid. 
E)  The secondary oocyte is haploid.

Question 16

Generally, among vertebrates

Accepted Answer

A)  cells are haploid during embryological development and become diploid at birth. 
B)  cells are diploid during embryological development and become haploid at birth. 
C)  cells are diploid during adult life and are haploid as a blastocyst. 
D)  only gametic cells are haploid. 
E)  only gametic cells are diploid. 
A)  cells are haploid during embryological development and become diploid at birth. 
B)  cells are diploid during embryological development and become haploid at birth. 
C)  cells are diploid during adult life and are haploid as a blastocyst. 
D)  only gametic cells are haploid. 
E)  only gametic cells are diploid.

Question 17

Semen contains all of the following except

Accepted Answer

A)  fructose. 
B)  mucus. 
C)  clotting enzymes. 
D)  substances to lower the pH of the uterine environment. 
E)  an active clot-dissolving enzyme. 
A)  fructose. 
B)  mucus. 
C)  clotting enzymes. 
D)  substances to lower the pH of the uterine environment. 
E)  an active clot-dissolving enzyme.

Question 18

In comparison to females from other mammalian species, the human female

Accepted Answer

A)  has fewer reproductive cycles per year. 
B)  reabsorbs the uterine lining following the completion of her uterine cycle. 
C)  must copulate in order to ovulate. 
D)  can be continuously sexually receptive. 
E)  has cycles that are under hormonal control. 
A)  has fewer reproductive cycles per year. 
B)  reabsorbs the uterine lining following the completion of her uterine cycle. 
C)  must copulate in order to ovulate. 
D)  can be continuously sexually receptive. 
E)  has cycles that are under hormonal control.

Question 19

Use the following to answer questions:
Match the cell stages listed below with the description of a cell in each question that follows. Each item may be used once, more than once, or not at all. 
-The cell type that differentiates into the mature ovum at the end of oogenesis

Accepted Answer

A)  Second polar body 
B)  Primary oocyte 
C)  Secondary oocyte 
D)  First polar body 
E)  Ootid 
A)  Second polar body 
B)  Primary oocyte 
C)  Secondary oocyte 
D)  First polar body 
E)  Ootid

Question 20

Which of the following statements about the prostate gland is false?

Accepted Answer

A)  Secretions from the prostate gland are contained in semen. 
B)  Secretions from the prostate gland make the uterine environment more hospitable to sperm. 
C)  Secretions from the prostate gland convert semen into a gelatinous mass. 
D)  The prostate gland surrounds the urethra as it leaves the bladder. 
E)  All of the above are true; none is false. 
A)  Secretions from the prostate gland are contained in semen. 
B)  Secretions from the prostate gland make the uterine environment more hospitable to sperm. 
C)  Secretions from the prostate gland convert semen into a gelatinous mass. 
D)  The prostate gland surrounds the urethra as it leaves the bladder. 
E)  All of the above are true; none is false.

Exam 43: Animal Reproduction

The enzyme-containing cap at the front of the head of a sperm is called the _______.

Which of the following statements about fertilization is false?

Which of the following statements about asexual reproduction is false?

If the egg is not fertilized following ovulation, the follicle cells

Which of the following is the most likely advantage of hermaphroditism?

A vasectomy is a minor operation that involves removing a small section of the _______ and tying off the loose ends.

As opposed to viviparous animals, _______ animals lay eggs in the environment, and their offspring go through embryonic stages outside the body of the mother.

In the female sexual response, the structure that is most sensitive is the

Which of the following statements about asexual reproduction is false?

Why do mammalian spermatocytes remain in cytoplasmic contact throughout their development?

Use the following to answer questions: Refer to the diagram below of the human male reproductive system. -Based on the diagram, which of the following statements is true?

External fertilization

The _______ of the human male contains sperm and secretions from bulbourethral glands, seminal vesicles, and the prostate gland.

Contractions of muscles in the uterine wall and milk letdown are stimulated by

Which of the following statements about oogenesis is false?

Generally, among vertebrates

Semen contains all of the following except

In comparison to females from other mammalian species, the human female

Use the following to answer questions: Match the cell stages listed below with the description of a cell in each question that follows. Each item may be used once, more than once, or not at all. -The cell type that differentiates into the mature ovum at the end of oogenesis

Which of the following statements about the prostate gland is false?

Studying Life

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Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

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Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

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Plants Without Seeds: From Water to Land

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