Question 1

Which of the following hormones causes the uterus to contract?

Accepted Answer

A)   oxytocin
B)   estrogen
C)   progesterone
D)   testosterone
E)   prolactinF) A) and B)
G) A) and C)

Question 2

In experiments with the roundworm Caenorhabditis elegans, researchers were able to trace the development of the generalized zygote into the specialized cells of the adult roundworm, a schematic that formed a(n)

Accepted Answer

A)   homeobox.
B)   pattern formation.
C)   cytoplasmic segregation.
D)   induction.
E)   fate map.F) A) and E)
G) A) and B) E

Question 3

Which of the following serves as an insulator for the embryo?

Accepted Answer

A)   amniotic fluid
B)   allantois
C)   chorion
D)   primitive streak
E)   yolk sacF) B) and E)
G) All of the above

Question 4

The process in which one embryonic tissue influences the development of another tissue by the use of signals called inducers is known as

Accepted Answer

A)   neurulation.
B)   gastrulation.
C)   induction.
D)   cytoplasmic segregation.
E)   homeotic pattern formation.F) D) and E)
G) A) and E)

Question 5

The ________ is a dorsal supporting rod present in the early embryonic development of the vertebrates.

Accepted Answer

A)   neural plate
B)   neural tube
C)   notochord
D)   neurula
E)   vertebral columnF) C) and D)
G) None of the above C

Question 6

Another term for programmed cell death is

Accepted Answer

A)   morphogenesis.
B)   apoptosis.
C)   pattern formation.
D)   cellular differentiation.
E)   mitosis.F) B) and E)
G) A) and B)

Question 7

During which month can the fetal heartbeat be heard by a physician with a stethoscope for the first time?

Accepted Answer

A)   first
B)   second
C)   fourth
D)   sixth
E)   eighthF) A) and B)
G) B) and E)

Question 8

Which of the following describes an event associated with development?

Accepted Answer

A)   cells divide and get larger
B)   cells become specialized in structure and function
C)   body parts are shaped and patterned into a specific form
D)   tissues and organs become arranged in the body
E)   All of the answer choices describe events associated with development.F) A) and B)
G) A) and C)

Question 9

The sac that surrounds the fetus and usually ruptures just before childbirth is the

Accepted Answer

A)   gastrula.
B)   allantois.
C)   yolk sac.
D)   amnion.
E)   archenteron.F) A) and D)
G) B) and C)

Question 10

The placenta develops from

Accepted Answer

A)   fetal membranes only.
B)   maternal tissue only.
C)   both fetal and maternal tissue.
D)   separate polar bodies that develop just the placental tissues.
E)   from the yolk sac.F) None of the above
G) A) and E)

Question 11

From months 5 to 7, a fetus is covered in a fine down called

Accepted Answer

A)   chorion.
B)   fuzz.
C)   lanugo.
D)   vernosa.
E)   hairs.F) A) and B)
G) C) and E)

Question 12

Which of these describes how the skin changes with aging?

Accepted Answer

A)   loss of elasticity
B)   loss of adipose tissue
C)   loss of sweat glands
D)   loss of sebaceous (oil)  glands
E)   All of the answer choices are changes seen in the skin with aging.F) A) and E)
G) B) and D)

Question 13

Which association is mismatched?

Accepted Answer

A)   chorion-gas exchange
B)   amnion-blood vessels
C)   allantois-waste storage
D)   yolk sac-food storage
E)   yolk-nourishmentF) A) and D)
G) C) and D)

Question 14

Which part of the blastocyst will develop into the human embryo?

Accepted Answer

A)   archenteron
B)   blastopore
C)   chorion
D)   trophoblast
E)   inner cell massF) B) and E)
G) D) and E)

Question 15

Which of the following develops from the germ layer called the endoderm?

Accepted Answer

A)   skin and nervous system
B)   muscles and blood
C)   gut and pancreas
D)   nervous system and muscles
E)   epithelial lining of the urinary bladderF) A) and E)
G) C) and D)

Question 16

Which system in a developing embryo is the first to become visually evident?

Accepted Answer

A)   reproductive
B)   circulatory
C)   excretory
D)   respiratory
E)   nervousF) All of the above
G) B) and E)

Question 17

The presence of the same homeotic genes in a wide range of organisms indicates that

Accepted Answer

A)   these genes evolved early in the history of life.
B)   all organisms are composed of exactly the same proteins.
C)   the same homeotic mutations are likely to appear in all organisms.
D)   essentially we can complete the genome mapping of all animals in a short time.
E)   structures remain fairly constant, but regulation of animal development varies widely across the kingdom.F) B) and E)
G) A) and D) A

Question 18

The cardiovascular and urinary systems form from the ________ layer.

Accepted Answer

A)   endoderm
B)   ectoderm
C)   mesoderm
D)   blastoderm
E)   gastrodermF) B) and C)
G) B) and E)

Question 19

A fertilized egg undergoes cell division without overall growth in the process called

Accepted Answer

A)   cleavage.
B)   gastrulation.
C)   differentiation.
D)   morphogenesis.
E)   embryology.F) B) and E)
G) A) and B)

Question 20

The last tissue layer to be formed during gastrulation is the

Accepted Answer

A)   endoderm.
B)   ectoderm.
C)   mesoderm.
D)   gastroderm.
E)   epiderm.F) B) and C)
G) C) and D)

Exam 22: Development and Aging

Which of the following hormones causes the uterus to contract?

Correct AnswerverifiedShow Answer

In experiments with the roundworm Caenorhabditis elegans, researchers were able to trace the development of the generalized zygote into the specialized cells of the adult roundworm, a schematic that formed a(n)

Correct AnswerverifiedE

Which of the following serves as an insulator for the embryo?

Correct AnswerverifiedShow Answer

The process in which one embryonic tissue influences the development of another tissue by the use of signals called inducers is known as

Correct AnswerverifiedShow Answer

The ________ is a dorsal supporting rod present in the early embryonic development of the vertebrates.

Correct AnswerverifiedC

Another term for programmed cell death is

Correct AnswerverifiedShow Answer

During which month can the fetal heartbeat be heard by a physician with a stethoscope for the first time?

Correct AnswerverifiedShow Answer

Which of the following describes an event associated with development?

Correct AnswerverifiedShow Answer

The sac that surrounds the fetus and usually ruptures just before childbirth is the

Correct AnswerverifiedShow Answer

The placenta develops from

Correct AnswerverifiedShow Answer

From months 5 to 7, a fetus is covered in a fine down called

Correct AnswerverifiedShow Answer

Which of these describes how the skin changes with aging?

Correct AnswerverifiedShow Answer

Which association is mismatched?

Correct AnswerverifiedShow Answer

Which part of the blastocyst will develop into the human embryo?

Correct AnswerverifiedShow Answer

Which of the following develops from the germ layer called the endoderm?

Correct AnswerverifiedShow Answer

Which system in a developing embryo is the first to become visually evident?

Correct AnswerverifiedShow Answer

The presence of the same homeotic genes in a wide range of organisms indicates that

Correct AnswerverifiedA

The cardiovascular and urinary systems form from the ________ layer.

Correct AnswerverifiedShow Answer

A fertilized egg undergoes cell division without overall growth in the process called

Correct AnswerverifiedShow Answer

The last tissue layer to be formed during gastrulation is the

Correct AnswerverifiedShow Answer

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E

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C

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A

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