Question 1

The coelomic cavity is derived from the

Accepted Answer

A)  blastocoel.
B)  folding of the neural tube.
C)  splitting of the mesoderm.
D)  elimination of the yolk sac nutrients.
E)  space left after organs develop.F) A) and E)
G) A) and D)

Question 2

Which of the following variables would support the damage accumulation theory of aging?

Accepted Answer

A)  Harmful metabolites accumulate over our lifetime.
B)  Protein fibers become cross-linked as we age.
C)  Poor diet and exposure to the sun lead to cellular damage.
D)  None of these support the damage accumulation theory of aging
E)  All of these support the damage accumulation theory of agingF) C) and E)
G) B) and E)

Question 3

At _____ weeks,the fetal heartbeat can be heard through a stethoscope.

Accepted Answer

A)  4
B)  25
C)  16
D)  12
E)  30F) B) and C)
G) A) and E)

Question 4

Development of the human embryo's heart begins in the ____ week.

Accepted Answer

A)  16th
B)  3rd
C)  1st
D)  24th
E)  6thF) B) and C)
G) None of the above

Question 5

Which of the following serves as the first site of blood formation in the embryo?

Accepted Answer

A)  chorion
B)  amnion
C)  placenta
D)  yolk sac
E)  allantois.F) C) and D)
G) A) and B)

Question 6

Prevention of polyspermy depends upon changes in the plasma membrane of the egg and in the zona pellucida.

Accepted Answer

A) True 
 B)False  True

Question 7

Which association of structure and function is incorrect?

Accepted Answer

A)  chorion - gas exchange
B)  amnion - blood vessels
C)  allantois - waste storage
D)  yolk sac - food storageE) C) and D)
F) None of the above

Question 8

Differentiation is characterized by

Accepted Answer

A)  cellular division and growth.
B)  cells becoming specialized in structure and function.
C)  body parts being shaped and patterned into a specific form.
D)  All of the choices are correct.
E)  None of the choices are correct.F) None of the above
G) A) and B) B

Question 9

The human embryo becomes a fetus at the end of the second month of gestation.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following stages of embryonic development consists of only two layers of cells?

Accepted Answer

A)  morula
B)  blastula
C)  early gastrula
D)  late gastrulaE) A) and B)
F) A) and C) C

Question 11

By the end of the eighth week of development,all organ systems are developed in the embryo.

Accepted Answer

A) True 
 B)False

Question 12

The neural tube of vertebrates develops during morphogenesis of the nervous system by the

Accepted Answer

A)  folding of ectoderm tissue.
B)  migration of mesoderm cells.
C)  fusion of ectoderm and mesoderm.
D)  contraction of the endoderm away from the mesoderm.
E)  extension of endoderm into a thin spinal column.F) A) and C)
G) A) and B)

Question 13

A fetus born at twenty-four weeks has a chance of surviving,although it may have

Accepted Answer

A)  immature lungs and breathing difficulties.
B)  kidneys that fail to function.
C)  an incomplete digestive system.
D)  problems with brain development.
E)  an incomplete heart and circulatory system.F) None of the above
G) A) and E)

Question 14

Which structures located on the oocyte serve to bring the entire sperm into it?

Accepted Answer

A)  microvilli
B)  flagella
C)  zona pellucida
D)  corona radiataE) A) and B)
F) C) and D)

Question 15

Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo?

Accepted Answer

A)  chorion
B)  amnion
C)  placenta
D)  yolk sac
E)  allantoisF) B) and D)
G) A) and B)

Question 16

Which structure is not associated with the development of the central nervous system in vertebrates?

Accepted Answer

A)  notochord
B)  neural plate
C)  neural tube
D)  ectodermE) C) and D)
F) None of the above

Question 17

Identify the correct order of steps in the development of the central nervous system. 
A.Neural folds develop on either side of the neural groove.
B.The neural tube forms.
C.Thickening of cells on the dorsal surface called the neural plate occurs.
D.The anterior end of the neural tube develops into the brain.

Accepted Answer

A)  c - a - b - d
B)  c - a - d - b
C)  a - c - b - d
D)  a - b - c- d
E)  d - c - b - aF) B) and C)
G) C) and D)

Question 18

The notochord develops in which stage of embryonic development?

Accepted Answer

A)  gastrulation
B)  neurulation
C)  blastulation
D)  cleavageE) None of the above
F) A) and D)

Question 19

What is the correct order of steps of morphogenesis in Drosophila melanogaster. A.Gap genes divide the body into broad regions
B.Establishment of anterior / posterior axes
C.Homeotic genes determine which body parts arise from each region
D.Pair-rule genes are activated in order to develop a preliminary segmentation pattern

Accepted Answer

A)  b - a - d - c
B)  a - d - c - b
C)  b - a - c - d
D)  a - b - c - d
E)  a - d - b - cF) C) and D)
G) C) and E)

Question 20

Morphogenesis is characterized by

Accepted Answer

A)  cell division and growth in size.
B)  cells becoming specialized in structure and function.
C)  body parts being shaped and patterned into a specific form.
D)  All of the choices are correct.
E)  None of the choices are correct.F) A) and C)
G) A) and B)

Exam 42: Animal Development

The coelomic cavity is derived from the

Correct Answer
verified

Which of the following variables would support the damage accumulation theory of aging?

Correct Answer
verified

At _____ weeks,the fetal heartbeat can be heard through a stethoscope.

Correct Answer
verified

Development of the human embryo's heart begins in the ____ week.

Correct Answer
verified

Which of the following serves as the first site of blood formation in the embryo?

Correct Answer
verified

Prevention of polyspermy depends upon changes in the plasma membrane of the egg and in the zona pellucida.

Correct Answer
verified
True

Which association of structure and function is incorrect?

Correct Answer
verified

Differentiation is characterized by

Correct Answer
verified
B

The human embryo becomes a fetus at the end of the second month of gestation.

Correct Answer
verified

Which of the following stages of embryonic development consists of only two layers of cells?

Correct Answer
verified
C

By the end of the eighth week of development,all organ systems are developed in the embryo.

Correct Answer
verified

The neural tube of vertebrates develops during morphogenesis of the nervous system by the

Correct Answer
verified

A fetus born at twenty-four weeks has a chance of surviving,although it may have

Correct Answer
verified

Which structures located on the oocyte serve to bring the entire sperm into it?

Correct Answer
verified

Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo?

Correct Answer
verified

Which structure is not associated with the development of the central nervous system in vertebrates?

Correct Answer
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The notochord develops in which stage of embryonic development?

Correct Answer
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Morphogenesis is characterized by

Correct Answer
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Exam 42: Animal Development

The coelomic cavity is derived from the

Correct AnswerverifiedShow Answer

Which of the following variables would support the damage accumulation theory of aging?

Correct AnswerverifiedShow Answer

At _____ weeks,the fetal heartbeat can be heard through a stethoscope.

Correct AnswerverifiedShow Answer

Development of the human embryo's heart begins in the ____ week.

Correct AnswerverifiedShow Answer

Which of the following serves as the first site of blood formation in the embryo?

Correct AnswerverifiedShow Answer

Prevention of polyspermy depends upon changes in the plasma membrane of the egg and in the zona pellucida.

Correct AnswerverifiedTrue

Which association of structure and function is incorrect?

Correct AnswerverifiedShow Answer

Differentiation is characterized by

Correct AnswerverifiedB

The human embryo becomes a fetus at the end of the second month of gestation.

Correct AnswerverifiedShow Answer

Which of the following stages of embryonic development consists of only two layers of cells?

Correct AnswerverifiedC

By the end of the eighth week of development,all organ systems are developed in the embryo.

Correct AnswerverifiedShow Answer

The neural tube of vertebrates develops during morphogenesis of the nervous system by the

Correct AnswerverifiedShow Answer

A fetus born at twenty-four weeks has a chance of surviving,although it may have

Correct AnswerverifiedShow Answer

Which structures located on the oocyte serve to bring the entire sperm into it?

Correct AnswerverifiedShow Answer

Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo?

Correct AnswerverifiedShow Answer

Which structure is not associated with the development of the central nervous system in vertebrates?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The notochord develops in which stage of embryonic development?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Morphogenesis is characterized by

Correct AnswerverifiedShow Answer

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True

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B

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C

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