Question 1

A larger number of synthetic estrogens are showing up in the environment.Speculate on what physiological effects this may have on male animals.

Accepted Answer

The presence of a larger number of synth

Question 2

The _______ undergo the first meiotic division in the production of sperm.

Accepted Answer

A)  Sertoli (sustentacular) cells 
B)  Primary oocytes 
C)  Spermatids 
D)  Primary spermatocytes 
E)  Spermatogonia 
A)  Sertoli (sustentacular) cells 
B)  Primary oocytes 
C)  Spermatids 
D)  Primary spermatocytes 
E)  Spermatogonia

Question 3

Estrogen and progesterone provide feedback control on the

Accepted Answer

A)  Ovary 
B)  Uterus 
C)  Testes 
D)  Pituitary 
E)  Prostate gland 
A)  Ovary 
B)  Uterus 
C)  Testes 
D)  Pituitary 
E)  Prostate gland

Question 4

In mammals,the ______ carries both sperm and urine.

Accepted Answer

A)  vas deferens. 
B)  urethra. 
C)  fallopian tube. 
D)  ureter. 
E)  seminiferous tubule. 
A)  vas deferens. 
B)  urethra. 
C)  fallopian tube. 
D)  ureter. 
E)  seminiferous tubule.

Question 5

Polar bodies are best characterized as

Accepted Answer

A)  follicles that did not become the graafian follicle. 
B)  one haploid nucleus from the first meiotic division and one haploid nucleus from the second meiotic division. 
C)  two haploid nuclei from the first meiotic division. 
D)  two haploid nuclei from the second meiotic division. 
E)  three haploid nuclei; one from the second division and one from the first that then divided again to form two more. 
A)  follicles that did not become the graafian follicle. 
B)  one haploid nucleus from the first meiotic division and one haploid nucleus from the second meiotic division. 
C)  two haploid nuclei from the first meiotic division. 
D)  two haploid nuclei from the second meiotic division. 
E)  three haploid nuclei; one from the second division and one from the first that then divided again to form two more.

Question 6

A metabolite of testosterone that has important hormone effects is

Accepted Answer

A)  FSH. 
B)  TSH. 
C)  anti-testosterone. 
D)  dihydrotestosterone. 
E)  progesterone. 
A)  FSH. 
B)  TSH. 
C)  anti-testosterone. 
D)  dihydrotestosterone. 
E)  progesterone.

Question 7

Contrast the cloaca of birds and reptiles with the vulva of a mammal.

Accepted Answer

The cloaca and the vulva are anatomical

Question 8

The luteal phase occurs

Accepted Answer

A)  on day 15. 
B)  during days 6 - 13. 
C)  on day 14. 
D)  during days 15 - 28. 
E)  anytime through the cycle. 
A)  on day 15. 
B)  during days 6 - 13. 
C)  on day 14. 
D)  during days 15 - 28. 
E)  anytime through the cycle.

Question 9

Since humans have two individual organisms to bear eggs or sperm separately,we are in the biological sense

Accepted Answer

A)  asexual. 
B)  bisexual. 
C)  monoecious. 
D)  hermaphroditic. 
E)  parthenogenetic. 
A)  asexual. 
B)  bisexual. 
C)  monoecious. 
D)  hermaphroditic. 
E)  parthenogenetic.

Question 10

The peptide hormone ______ produced by the ______ allows expansion of the pelvis by increasing flexibility of the pubic symphysis.

Accepted Answer

A)  estrogen, ovaries 
B)  prolactin, hypothalamus 
C)  prolactin, anterior pituitary 
D)  relaxin, hypothalamus 
E)  relaxin, placenta 
A)  estrogen, ovaries 
B)  prolactin, hypothalamus 
C)  prolactin, anterior pituitary 
D)  relaxin, hypothalamus 
E)  relaxin, placenta

Question 11

Development of an embryo from an egg without the participation of a spermatozoa is called _________.

Accepted Answer

The answer of Development of an embryo from an egg...

Question 12

Describe the stages of the menstrual cycle,including control of the ovarian cycle.

Accepted Answer

The menstrual cycle is divided into four

Question 13

When an egg is formed without meiosis,merely a mitotic division,it is

Accepted Answer

A)  ameiotic parthenogenesis. 
B)  meiotic parthenogenesis. 
C)  anti-parthenogenesis. 
D)  hermaphroditism. 
E)  bisexual reproduction. 
A)  ameiotic parthenogenesis. 
B)  meiotic parthenogenesis. 
C)  anti-parthenogenesis. 
D)  hermaphroditism. 
E)  bisexual reproduction.

Question 14

Birds never developed an internal placental system but are confined to laying eggs.Consider the many physiological burdens and limitations imposed by bearing live young,and then consider all of the adaptations of birds for flight.Given that birds arose from dinosaur-like ancestors that also laid eggs,but birds managed to evolve a high metabolism and other specialized features,discuss one physiological reason that probably limits birds from ever evolving viviparity.

Accepted Answer

One physiological reason that likely lim

Question 15

In reptiles and birds the reproductive and excretory ducts empty into the ________.

Accepted Answer

The answer of In reptiles and birds the reproductive and...

Question 16

Which of the following statements is incorrect?

Accepted Answer

A)  the follicles in the ovary produce luteinizing hormone. 
B)  the corpus luteum produces progesterone. 
C)  a surge of LH is believed to promote ovulation. 
D)  LH stimulates the formation of the corpus luteum. 
A)  the follicles in the ovary produce luteinizing hormone. 
B)  the corpus luteum produces progesterone. 
C)  a surge of LH is believed to promote ovulation. 
D)  LH stimulates the formation of the corpus luteum.

Question 17

Fertilization in humans normally occurs in the

Accepted Answer

A)  uterus. 
B)  vagina. 
C)  outer third of the oviducts. 
D)  abdominal cavity between ovary and oviducts. 
E)  ovarian follicle at time of ovulation. 
A)  uterus. 
B)  vagina. 
C)  outer third of the oviducts. 
D)  abdominal cavity between ovary and oviducts. 
E)  ovarian follicle at time of ovulation.

Question 18

Describe two other systems for determining the sex of offspring besides the XX-XY system described for humans,and give an example of the organism(s)that use the system.

Accepted Answer

One other system for determining the sex

Question 19

During oogenesis,the egg grows in size by accumulating _______ reserves to support future growth and development after fertilization.

Accepted Answer

A)  hormone. 
B)  sugar. 
C)  water. 
D)  mitochondrial. 
E)  yolk. 
A)  hormone. 
B)  sugar. 
C)  water. 
D)  mitochondrial. 
E)  yolk.

Question 20

Discuss how internal fertilization and the production of shelled eggs were important in the development of animals capable of living on land.

Accepted Answer

Internal fertilization and the productio

Exam 7: The Reproductive Process

A larger number of synthetic estrogens are showing up in the environment.Speculate on what physiological effects this may have on male animals.

The _______ undergo the first meiotic division in the production of sperm.

Estrogen and progesterone provide feedback control on the

In mammals,the ______ carries both sperm and urine.

Polar bodies are best characterized as

A metabolite of testosterone that has important hormone effects is

Contrast the cloaca of birds and reptiles with the vulva of a mammal.

The luteal phase occurs

Since humans have two individual organisms to bear eggs or sperm separately,we are in the biological sense

The peptide hormone ______ produced by the ______ allows expansion of the pelvis by increasing flexibility of the pubic symphysis.

Development of an embryo from an egg without the participation of a spermatozoa is called _________.

Describe the stages of the menstrual cycle,including control of the ovarian cycle.

When an egg is formed without meiosis,merely a mitotic division,it is

In reptiles and birds the reproductive and excretory ducts empty into the ________.

Which of the following statements is incorrect?

Fertilization in humans normally occurs in the

Describe two other systems for determining the sex of offspring besides the XX-XY system described for humans,and give an example of the organism(s)that use the system.

During oogenesis,the egg grows in size by accumulating _______ reserves to support future growth and development after fertilization.

Discuss how internal fertilization and the production of shelled eggs were important in the development of animals capable of living on land.

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

Principles of Development

Architectural Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Radiate Animals

Acoelomorpha,Platyzoa,and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Support, Protection, and Movement

Chaetognaths, Echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distributions

Animal Ecology

Filters

The peptide hormone produced by the allows expansion of the pelvis by increasing flexibility of the pubic symphysis.