Question 1

What process is absent in mammals with an estrous cycle?

Accepted Answer

A) oogenesis 
B) homeostasis 
C) ovulation 
D) menstruation 
A) oogenesis 
B) homeostasis 
C) ovulation 
D) menstruation

Question 2

Which type of fish is likely to produce the smallest number of progeny from each mating?

Accepted Answer

A) An oviparous species 
B) An ovoviparous species 
C) A viviparous species 
A) An oviparous species 
B) An ovoviparous species 
C) A viviparous species

Question 3

The sperm head encloses a compact nucleus and is capped by a vesicle called what?

Accepted Answer

A) Sertoli cell 
B) flagellum 
C) acrosome 
D) vas deferens 
A) Sertoli cell 
B) flagellum 
C) acrosome 
D) vas deferens

Question 4

Which of the following have young which feed on milk?

Accepted Answer

A) marsupials 
B) monotremes 
C) placental mammals 
D) placental mammals and marsupials 
E) placental mammals, marsupials, and monotremes 
A) marsupials 
B) monotremes 
C) placental mammals 
D) placental mammals and marsupials 
E) placental mammals, marsupials, and monotremes

Question 5

Some internally fertilized eggs develop and hatch outside the mother's body.What is this developmental strategy called?

Accepted Answer

A) oviparity 
B) placental development 
C) marsupial development 
D) vivipary 
A) oviparity 
B) placental development 
C) marsupial development 
D) vivipary

Question 6

With help from fertility specialists, a woman with very low follicle-stimulating hormone and luteinizing hormone levels finally conceives a son.If her genetic condition is from a dominant allele and is passed on to her son, what is the likely result?

Accepted Answer

A) He may have fertility problems as well. 
B) He is likely to have more sons than daughters. 
C) He will be fine, but his daughters will have a 50% chance of fertility problems. 
D) As a male, he will neither express nor pass on these genes. 
A) He may have fertility problems as well. 
B) He is likely to have more sons than daughters. 
C) He will be fine, but his daughters will have a 50% chance of fertility problems. 
D) As a male, he will neither express nor pass on these genes.

Question 7

You have discovered a new invertebrate species that is slow-moving and widely dispersed.What might you predict about its reproductive system?

Accepted Answer

A) Males are likely to be smaller than females. 
B) Females are likely to be smaller than males. 
C) It is likely to use internal fertilization and brood care. 
D) It is likely to be hermaphroditic. 
A) Males are likely to be smaller than females. 
B) Females are likely to be smaller than males. 
C) It is likely to use internal fertilization and brood care. 
D) It is likely to be hermaphroditic.

Question 8

What is the most commonly employed form of birth control in the United States?

Accepted Answer

A) abstinence 
B) prevention of ovulation by hormonal inhibition 
C) sperm blockage with condoms 
D) sterilization 
A) abstinence 
B) prevention of ovulation by hormonal inhibition 
C) sperm blockage with condoms 
D) sterilization

Question 9

An adult male produces sperm continuously by meiotic division of cells lining what structure?

Accepted Answer

A) Malpighian tubules 
B) Fallopian tubules 
C) seminiferous tubules 
D) epididymis tubules 
A) Malpighian tubules 
B) Fallopian tubules 
C) seminiferous tubules 
D) epididymis tubules

Question 10

How do birth control pills prevent fertilization?

Accepted Answer

A) They alter the uterine environment so that sperm cannot survive. 
B) They prevent follicle development and ovulation. 
C) The provide hCG, indicating that fertilization has already occurred. 
D) They inhibit menstruation. 
A) They alter the uterine environment so that sperm cannot survive. 
B) They prevent follicle development and ovulation. 
C) The provide hCG, indicating that fertilization has already occurred. 
D) They inhibit menstruation.

Question 11

Internally fertilized organisms can either be born alive, or emerge from what structures?

Accepted Answer

A) follicles 
B) ducts 
C) capsules 
D) eggs 
A) follicles 
B) ducts 
C) capsules 
D) eggs

Question 12

You notice that in your aquarium, previously full of undoubtedly male fish, one is laying eggs.Upon a bit of research, you find out that the species of fish you purchased is a sequential hermaphrodite.Which of the following is true?

Accepted Answer

A) One of the male fish underwent protandry and became a female. 
B) One of the male fish fertilized its own eggs. 
C) Since the fish are hermaphrodites, one of the male fish laid eggs and another will likely fertilize them. 
D) The fish have parthenogenesis, therefore their eggs do not have to be fertilized to be viable. 
A) One of the male fish underwent protandry and became a female. 
B) One of the male fish fertilized its own eggs. 
C) Since the fish are hermaphrodites, one of the male fish laid eggs and another will likely fertilize them. 
D) The fish have parthenogenesis, therefore their eggs do not have to be fertilized to be viable.

Question 13

What are the only mammals that lay eggs?

Accepted Answer

A) monotremes 
B) placentals 
C) marsupials 
A) monotremes 
B) placentals 
C) marsupials

Question 14

What special feature of the ovum is facilitated by the production of polar bodies?

Accepted Answer

A) large size of the cell 
B) extra layers of plasma membrane 
C) triploidy 
D) large size of the nucleus 
A) large size of the cell 
B) extra layers of plasma membrane 
C) triploidy 
D) large size of the nucleus

Question 15

What term describes avoidance of reproduction without giving up sexual intercourse?

Accepted Answer

A) abstinence 
B) the rhythm method 
C) asexual reproduction 
D) contraception 
A) abstinence 
B) the rhythm method 
C) asexual reproduction 
D) contraception

Question 16

Which hormone prevents the corpus luteum from degenerating?

Accepted Answer

A) LH 
B) FSH 
C) hCG 
D) progesterone 
A) LH 
B) FSH 
C) hCG 
D) progesterone

Question 17

The scrotum is a sac-like structure outside the abdomen in which the testes are suspended.Why is this structure essential?

Accepted Answer

A) Sperm must be closer to the penis to be ejaculated. 
B) There is not enough space in the abdomen to grow properly. 
C) Lower temperature is required for normal development of sperm. 
D) There is too much hormonal influence if they remain in the abdomen. 
A) Sperm must be closer to the penis to be ejaculated. 
B) There is not enough space in the abdomen to grow properly. 
C) Lower temperature is required for normal development of sperm. 
D) There is too much hormonal influence if they remain in the abdomen.

Question 18

What hormone is tested for in pregnancy tests?

Accepted Answer

A) estrogen hormone 
B) luteinizing hormone 
C) follicle stimulation hormone 
D) progesterone hormone 
E) hCG hormone 
A) estrogen hormone 
B) luteinizing hormone 
C) follicle stimulation hormone 
D) progesterone hormone 
E) hCG hormone

Question 19

An extremely rare occurrence in humans is a multiple pregnancy with the embryos at different stages due to fertilization weeks apart.What mechanism normally prevents this from happening?

Accepted Answer

A) The embryo's secretion of FSH and LH maintains the corpus luteum, keeping estradiol and progesterone high until the placenta takes over secretion of these hormones. 
B) The embryo's secretion of GnRH maintains the corpus luteum, keeping FSH and LH high until the placenta takes over secretion of these hormones. 
C) The embryo's secretion of hCG maintains the corpus luteum, keeping estradiol and progesterone high until the placenta takes over secretion of these hormones. 
D) The follicle's secretion of polar bodies maintains the fimbriae, keeping estradiol and progesterone high until the fallopian tube takes over secretion of these hormones. 
A) The embryo's secretion of FSH and LH maintains the corpus luteum, keeping estradiol and progesterone high until the placenta takes over secretion of these hormones. 
B) The embryo's secretion of GnRH maintains the corpus luteum, keeping FSH and LH high until the placenta takes over secretion of these hormones. 
C) The embryo's secretion of hCG maintains the corpus luteum, keeping estradiol and progesterone high until the placenta takes over secretion of these hormones. 
D) The follicle's secretion of polar bodies maintains the fimbriae, keeping estradiol and progesterone high until the fallopian tube takes over secretion of these hormones.

Question 20

What was the most important adaptation of the reptiles and birds to life on land?

Accepted Answer

A) the shelled egg 
B) the amniotic egg 
C) the external egg 
D) the impermeable egg 
A) the shelled egg 
B) the amniotic egg 
C) the external egg 
D) the impermeable egg

Exam 52: The Reproductive System

What process is absent in mammals with an estrous cycle?

Which type of fish is likely to produce the smallest number of progeny from each mating?

The sperm head encloses a compact nucleus and is capped by a vesicle called what?

Which of the following have young which feed on milk?

Some internally fertilized eggs develop and hatch outside the mother's body.What is this developmental strategy called?

With help from fertility specialists, a woman with very low follicle-stimulating hormone and luteinizing hormone levels finally conceives a son.If her genetic condition is from a dominant allele and is passed on to her son, what is the likely result?

You have discovered a new invertebrate species that is slow-moving and widely dispersed.What might you predict about its reproductive system?

What is the most commonly employed form of birth control in the United States?

An adult male produces sperm continuously by meiotic division of cells lining what structure?

How do birth control pills prevent fertilization?

Internally fertilized organisms can either be born alive, or emerge from what structures?

You notice that in your aquarium, previously full of undoubtedly male fish, one is laying eggs.Upon a bit of research, you find out that the species of fish you purchased is a sequential hermaphrodite.Which of the following is true?

What are the only mammals that lay eggs?

What special feature of the ovum is facilitated by the production of polar bodies?

What term describes avoidance of reproduction without giving up sexual intercourse?

Which hormone prevents the corpus luteum from degenerating?

The scrotum is a sac-like structure outside the abdomen in which the testes are suspended.Why is this structure essential?

What hormone is tested for in pregnancy tests?

An extremely rare occurrence in humans is a multiple pregnancy with the embryos at different stages due to fertilization weeks apart.What mechanism normally prevents this from happening?

What was the most important adaptation of the reptiles and birds to life on land?

The Science of Biology

The Nature of Molecules and the Properties of Water

The Chemical Building Blocks of Life

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes, Mapping, and the Meiosis-Inheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

Genomics

Cellular Mechanisms of Development

Genes Within Populations

The Evidence for Evolution

The Origin of Species

Systematics, Phylogenies, and Comparative Biology

Genome Evolution

Evolution of Development

The Origin and Diversity of Life

Viruses

Prokaryotes

Protists

Seedless Plants

Seed Plants

Fungi

Animal Diversity and the Evolution of Body Plans

Protostomes

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Plant Form

Transport in Plants

Plant Nutrition and Soils

Plant Defense Responses

Sensory Systems in Plants

Plant Reproduction

The Animal Body and Principles of Regulation

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Sensory Systems

The Endocrine System

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Osmotic Regulation and the Urinary System

The Immune System

Animal Development

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