Question 1

Sexual reproduction has an evolutionary advantage over asexual reproduction because it

Accepted Answer

A)  results in both males and females of a species. 
B)  is a more lengthy process. 
C)  promotes genetic variability that copes with changes in the environment. 
D)  is controlled by many hormonal mechanisms. 
E)  protects and nurtures the embryo. 
A)  results in both males and females of a species. 
B)  is a more lengthy process. 
C)  promotes genetic variability that copes with changes in the environment. 
D)  is controlled by many hormonal mechanisms. 
E)  protects and nurtures the embryo.

Question 2

The female common octopus (Octopus vulgaris)mates once,guards the eggs she lays,and then dies after they hatch.This is an example of

Accepted Answer

A)  embryonic diapause. 
B)  delayed implantation. 
C)  semelparity. 
D)  iteroparity. 
E)  delayed fertility. 
A)  embryonic diapause. 
B)  delayed implantation. 
C)  semelparity. 
D)  iteroparity. 
E)  delayed fertility.

Question 3

In primates,follicles do not mature as long as the corpus luteum is maintained because

Accepted Answer

A)  the hormones released from the corpus luteum inhibit LH and FSH secretion. 
B)  the hormones released from the corpus luteum inhibit ovarian secretion. 
C)  the ovary receives negative feedback from the endometrial lining of the uterus. 
D)  the ovary receives negative feedback as long as the egg is viable. 
E)  new follicle development depends upon the hormones released from the corpus luteum. 
A)  the hormones released from the corpus luteum inhibit LH and FSH secretion. 
B)  the hormones released from the corpus luteum inhibit ovarian secretion. 
C)  the ovary receives negative feedback from the endometrial lining of the uterus. 
D)  the ovary receives negative feedback as long as the egg is viable. 
E)  new follicle development depends upon the hormones released from the corpus luteum.

Question 4

Which method of contraception is most likely to fail?

Accepted Answer

A)  Rhythm method 
B)  Birth control pill 
C)  Vasectomy 
D)  Diaphragm 
E)  Condom 
A)  Rhythm method 
B)  Birth control pill 
C)  Vasectomy 
D)  Diaphragm 
E)  Condom

Question 5

Antarctic fur seals mate in the early summer.Fertilization also occurs at this time,but the embryos do not implant until autumn.This is an example of

Accepted Answer

A)  embryonic diapause. 
B)  delayed fertility. 
C)  semelparity. 
D)  iteroparity. 
E)  delayed implantation. 
A)  embryonic diapause. 
B)  delayed fertility. 
C)  semelparity. 
D)  iteroparity. 
E)  delayed implantation.

Question 6

A human female can expect to

Accepted Answer

A)  ovulate mature eggs from birth until the age of 50. 
B)  produce only half as many mature gametes in her lifetime as a male. 
C)  ovulate a diploid ovum approximately every month following puberty. 
D)  stop being fertile at a younger age than a male. 
E)  have all the mature ova she will ever have as a fetus or shortly after birth. 
A)  ovulate mature eggs from birth until the age of 50. 
B)  produce only half as many mature gametes in her lifetime as a male. 
C)  ovulate a diploid ovum approximately every month following puberty. 
D)  stop being fertile at a younger age than a male. 
E)  have all the mature ova she will ever have as a fetus or shortly after birth.

Question 7

If a man develops a large epididymal cyst that requires removal,the surgeon will most likely make an incision in the man's _______ to remove the cyst.If the entire epididymis is removed,then the man will likely _______.

Accepted Answer

A)  abdomen;be sterile 
B)  abdomen;be fertile but produce a mix of mature and immature sperm 
C)  penis;be sterile 
D)  scrotum;be sterile 
E)  scrotum;be fertile but produce a reduced quantity of mature sperm 
A)  abdomen;be sterile 
B)  abdomen;be fertile but produce a mix of mature and immature sperm 
C)  penis;be sterile 
D)  scrotum;be sterile 
E)  scrotum;be fertile but produce a reduced quantity of mature sperm

Question 8

The two anterior pituitary gonadotropins that coordinate human female reproductive events are _______ and _______.

Accepted Answer

A)  follicle-stimulating hormone;estrogen 
B)  estrogen;progesterone 
C)  follicle-stimulating hormone;progesterone 
D)  luteinizing hormone;progesterone 
E)  luteinizing hormone;follicle-stimulating hormone 
A)  follicle-stimulating hormone;estrogen 
B)  estrogen;progesterone 
C)  follicle-stimulating hormone;progesterone 
D)  luteinizing hormone;progesterone 
E)  luteinizing hormone;follicle-stimulating hormone

Question 9

Suppose you incubate American alligator eggs in order to hatch out a brood of baby alligators.You carefully set the temperature of the incubator at 35°C and keep it steady throughout the incubation period.You can expect that the baby alligators that hatch will

Accepted Answer

A)  have a 50/50 sex ratio of males to females. 
B)  not survive. 
C)  hatch as males but later switch to being female. 
D)  hatch as females but later switch to being male. 
E)  be almost exclusively of one sex. 
A)  have a 50/50 sex ratio of males to females. 
B)  not survive. 
C)  hatch as males but later switch to being female. 
D)  hatch as females but later switch to being male. 
E)  be almost exclusively of one sex.

Question 10

At birth,a female has about one million oocytes in each ovary.If a woman's fertile years are between the ages of 10 and 50,and she has two pregnancies during this time,about _______ of these oocytes will mature and be released at ovulation over her lifetime.

Accepted Answer

A)  150 
B)  450 
C)  600 
D)  800 
E)  1,500 
A)  150 
B)  450 
C)  600 
D)  800 
E)  1,500

Question 11

While snorkeling over a coral reef in the ocean,you spot a group of anemonefish swimming among the tentacles of a single sea anemone.You can expect that in this group

Accepted Answer

A)  most of the fish are female. 
B)  the largest fish is male. 
C)  a female fish will become male if the largest fish is removed. 
D)  the fish are genetically identical,being clones of one another. 
E)  a male fish will become female if the breeding female dies. 
A)  most of the fish are female. 
B)  the largest fish is male. 
C)  a female fish will become male if the largest fish is removed. 
D)  the fish are genetically identical,being clones of one another. 
E)  a male fish will become female if the breeding female dies.

Question 12

Which structure is a primary reproductive organ found in human males?

Accepted Answer

A)  Scrotum 
B)  Epididymis 
C)  Penis 
D)  Testis 
E)  Vas deferens 
A)  Scrotum 
B)  Epididymis 
C)  Penis 
D)  Testis 
E)  Vas deferens

Question 13

If you caught a female blue crab and kept it by itself in an aquarium,you might be surprised to find egg masses being laid by the crab for months after you captured it.The most likely explanation for this is that this crab

Accepted Answer

A)  uses external fertilization. 
B)  is able to store sperm for months. 
C)  utilizes delayed implantation. 
D)  is semelparous. 
E)  utilizes embryonic diapause. 
A)  uses external fertilization. 
B)  is able to store sperm for months. 
C)  utilizes delayed implantation. 
D)  is semelparous. 
E)  utilizes embryonic diapause.

Question 14

In primates,a corpus luteum that is secreting hormones initiates a sequence of events that prevents new follicles from developing.Which statement about this sequence is true?

Accepted Answer

A)  Progesterone from the corpus luteum induces release of GnRH in a positive feedback loop. 
B)  Estrogen from the corpus luteum induces the hypothalamus to release GnRH. 
C)  FSH from the corpus luteum inhibits release of GnRH in a negative feedback loop. 
D)  LH from the corpus luteum inhibits release of GnRH in a negative feedback loop. 
E)  Estrogen and progesterone from the corpus luteum inhibit release of GnRH,which results in a suppression of FSH and LH secretion. 
A)  Progesterone from the corpus luteum induces release of GnRH in a positive feedback loop. 
B)  Estrogen from the corpus luteum induces the hypothalamus to release GnRH. 
C)  FSH from the corpus luteum inhibits release of GnRH in a negative feedback loop. 
D)  LH from the corpus luteum inhibits release of GnRH in a negative feedback loop. 
E)  Estrogen and progesterone from the corpus luteum inhibit release of GnRH,which results in a suppression of FSH and LH secretion.

Question 15

After spermatogenesis in humans,sperm cells are generally stored in the

Accepted Answer

A)  spermatophore. 
B)  prostate gland. 
C)  vas deferens. 
D)  seminiferous tubule. 
E)  epididymis. 
A)  spermatophore. 
B)  prostate gland. 
C)  vas deferens. 
D)  seminiferous tubule. 
E)  epididymis.

Question 16

In the photographs below,the female(s)is/are labeled _______ and is/are distinguishable by _______.

Accepted Answer

A)  1;bright coloration 
B)  2 and 4;secondary sexual characteristics 
C)  2 and 3;primary reproductive organs 
D)  2;accessory reproductive organs 
E)  4;accessory reproductive structures 
A)  1;bright coloration 
B)  2 and 4;secondary sexual characteristics 
C)  2 and 3;primary reproductive organs 
D)  2;accessory reproductive organs 
E)  4;accessory reproductive structures

Question 17

In a healthy human male,semen contains a number of substances,including

Accepted Answer

A)  mucus from the bulbourethral glands. 
B)  fructose from the bulbourethral glands. 
C)  clear mucus from the seminal vesicles. 
D)  seminal fluid from the bulbourethral glands. 
E)  sperm from the prostate gland. 
A)  mucus from the bulbourethral glands. 
B)  fructose from the bulbourethral glands. 
C)  clear mucus from the seminal vesicles. 
D)  seminal fluid from the bulbourethral glands. 
E)  sperm from the prostate gland.

Question 18

If a male and female rabbit are kept together in a cage,the female rabbit will ovulate

Accepted Answer

A)  once every month,when she enters estrus. 
B)  when she mates with the male. 
C)  while she is pregnant. 
D)  immediately after giving birth when she first sees the male 
E)  following estrus and before she mates with the male. 
A)  once every month,when she enters estrus. 
B)  when she mates with the male. 
C)  while she is pregnant. 
D)  immediately after giving birth when she first sees the male 
E)  following estrus and before she mates with the male.

Question 19

Hermaphrodites are organisms that

Accepted Answer

A)  are exclusively terrestrial. 
B)  are unable to breed. 
C)  develop offspring from unfertilized eggs. 
D)  produce both male and female gametes. 
E)  have abnormal accessory organs. 
A)  are exclusively terrestrial. 
B)  are unable to breed. 
C)  develop offspring from unfertilized eggs. 
D)  produce both male and female gametes. 
E)  have abnormal accessory organs.

Question 20

Which contraceptive method has a success rate greater than 90 percent?

Accepted Answer

A)  Spermicidal jellies 
B)  Condoms 
C)  Diaphragms 
D)  Oral hormones ("the pill") 
E)  Rhythm method 
A)  Spermicidal jellies 
B)  Condoms 
C)  Diaphragms 
D)  Oral hormones ("the pill") 
E)  Rhythm method

Exam 37: Animal Reproduction

Sexual reproduction has an evolutionary advantage over asexual reproduction because it

The female common octopus (Octopus vulgaris)mates once,guards the eggs she lays,and then dies after they hatch.This is an example of

In primates,follicles do not mature as long as the corpus luteum is maintained because

Which method of contraception is most likely to fail?

Antarctic fur seals mate in the early summer.Fertilization also occurs at this time,but the embryos do not implant until autumn.This is an example of

A human female can expect to

If a man develops a large epididymal cyst that requires removal,the surgeon will most likely make an incision in the man's _______ to remove the cyst.If the entire epididymis is removed,then the man will likely _______.

The two anterior pituitary gonadotropins that coordinate human female reproductive events are _______ and _______.

Suppose you incubate American alligator eggs in order to hatch out a brood of baby alligators.You carefully set the temperature of the incubator at 35°C and keep it steady throughout the incubation period.You can expect that the baby alligators that hatch will

At birth,a female has about one million oocytes in each ovary.If a woman's fertile years are between the ages of 10 and 50,and she has two pregnancies during this time,about _______ of these oocytes will mature and be released at ovulation over her lifetime.

While snorkeling over a coral reef in the ocean,you spot a group of anemonefish swimming among the tentacles of a single sea anemone.You can expect that in this group

Which structure is a primary reproductive organ found in human males?

If you caught a female blue crab and kept it by itself in an aquarium,you might be surprised to find egg masses being laid by the crab for months after you captured it.The most likely explanation for this is that this crab

In primates,a corpus luteum that is secreting hormones initiates a sequence of events that prevents new follicles from developing.Which statement about this sequence is true?

After spermatogenesis in humans,sperm cells are generally stored in the

In the photographs below,the female(s)is/are labeled _______ and is/are distinguishable by _______.

In a healthy human male,semen contains a number of substances,including

If a male and female rabbit are kept together in a cage,the female rabbit will ovulate

Hermaphrodites are organisms that

Which contraceptive method has a success rate greater than 90 percent?

Introduction

The Chemistry and Energy of Life

Nucleic Acids, Proteins, and Enzymes

Cells: the Working Units of Life

Cell Membranes and Signaling

Pathways That Harvest and Store Chemical Energy

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

DNA and Its Role in Heredity

From Dna to Protein: Gene Expression

Regulation of Gene Expression

Genomes

Biotechnology

Genes, Development, and Evolution

Processes of Evolution

Reconstructing and Using Phylogenies

Speciation

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

The Evolution of Plants

The Evolution and Diversity of Fungi

Animal Origins and Diversity

The Plant Body

Plant Nutrition and Transport

Plant Growth and Development

Reproduction of Flowering Plants

Plants in the Environment

Fundamentals of Animal Function

Nutrition and Digestion

Breathing

Circulation

Muscle and Movement

Neurons, Sense Organs, and Nervous Systems

Nervous and Endocrine Control

Water and Salts: Excretion

Animal Development

Immunology: Animal Defense Systems

Animal Behavior

The Distribution of Earths Ecological Systems

Populations

Ecological and Evolutionary Consequences of Interactions Within and Among Species

Ecological Communities

The Global Ecosystem

Filters

If a man develops a large epididymal cyst that requires removal,the surgeon will most likely make an incision in the man's _ to remove the cyst.If the entire epididymis is removed,then the man will likely _.

The two anterior pituitary gonadotropins that coordinate human female reproductive events are _ and _.

In the photographs below,the female(s)is/are labeled _ and is/are distinguishable by _.