Question 1

All of the following occur within the placenta except

Accepted Answer

A)  the bloods of the mother and the embryo come in close contact without mixing.
B)  oxygen can diffuse from the mother to the embryo.
C)  carbon dioxide can diffuse from the embryo to the mother.
D)  the placenta provides nourishment,hormones,and detoxifying functions to the embryo.
E)  the antibodies made in the embryo protect the mother from infections.F) A) and B)
G) None of the above

Question 2

The pattern of cleavage division characteristic of mammalian cells is

Accepted Answer

A)  holoblastic cleavage with eggs containing little or no yolk.
B)  more yolk-containing egg-cleavage resulting in vegetal and animal pole.
C)  meroblastic cleavage with eggs containing almost entirely yolk.
D)  holoblastic cleavage with eggs containing very little yolk,but with the inner cell mass concentrated at one pole.
E)  holoblastic cleavage with eggs containing very little yolk,but with the inner cell mass distributed uniformly.F) C) and E)
G) A) and B)

Question 3

According to the figure,which diagram shows the initial determination of primary germ layers?

Accepted Answer

A)  diagram I
B)  diagram II
C)  both diagram I and diagram II
D)  neither diagram I nor diagram IIE) None of the above
F) B) and D)

Question 4

Which of the following is not formed by the developing mesoderm?

Accepted Answer

A)  skeleton
B)  nervous system
C)  muscles
D)  dermis of skin
E)  bloodF) A) and E)
G) C) and D)

Question 5

All of the following are stages of vertebrate development except

Accepted Answer

A)  cleavage.
B)  fertilization.
C)  inversion.
D)  gastrulation.
E)  organogenesis.F) A) and B)
G) A) and C)

Question 6

Choose the letter of the best match from the following:
-The embryo is now called the fetus.

Accepted Answer

A)  third trimester of pregnancy
B)  second month of pregnancy
C)  first month of pregnancy
D)  second trimester of pregnancy
E)  third month of pregnancyF) None of the above
G) B) and D)

Question 7

Select the incorrect statement from the choices in reference to postnatal development of human infants.

Accepted Answer

A)  Human babies can double their birth weight in their first two months of life.
B)  The head of newborn humans is disproportionate to the rest of their bodies.
C)  The pattern of growth exhibited by human babies is called allometric growth.
D)  In human babies the cerebral skull grows faster than the jaw.
E)  In human babies the brain grows at the same rate as the skull.F) A) and D)
G) C) and D)

Question 8

Which of the following animals undergoes rotational cleavage?

Accepted Answer

A)  echinoderms
B)  annelids
C)  amphibians
D)  mammals
E)  reptilesF) A) and D)
G) A) and C)

Question 9

Choose the letter of the best match from the following:
-The limbs,tail bud,and internal organs form.

Accepted Answer

A)  third trimester of pregnancy
B)  second month of pregnancy
C)  first month of pregnancy
D)  second trimester of pregnancy
E)  third month of pregnancyF) B) and C)
G) None of the above

Question 10

In human females,milk production is a result of

Accepted Answer

A)  stimulation of the alveoli of the mammary glands by prolactin from the anterior pituitary gland.
B)  stimulation of the alveoli of the mammary glands by oxytocin from the anterior pituitary gland.
C)  stimulation of the alveoli of the mammary glands by prolactin from the posterior pituitary gland.
D)  stimulation of the alveoli of the mammary glands by oxytocin from the posterior pituitary glanD.
E)  stimulation of the alveoli of the mammary glands by LH from the anterior pituitary gland.F) C) and D)
G) D) and E)

Question 11

The ______ trimester of pregnancy is characterized by growth,formation of major nerve tracts,and formation of new brain cells.

Accepted Answer

A)  first
B)  second
C)  thirdD) A) and C)
E) B) and C)

Question 12

The first milk that is produced after birth is a yellowish fluid called

Accepted Answer

A)  prolactase.
B)  colostrum.
C)  hCG.
D)  chorionic lactase.
E)  allantoicasE.F) A) and C)
G) All of the above

Exam 54: Animal Development

The ______ trimester of pregnancy is characterized by growth,formation of major nerve tracts,and formation of new brain cells.

Correct Answer
verified

All of the following occur within the placenta except

Correct Answer
verified

Choose the letter of the best match from the following: -The embryo is now called the fetus.

Correct Answer
verified

The pattern of cleavage division characteristic of mammalian cells is

Correct Answer
verified

According to the figure,which diagram shows the initial determination of primary germ layers?

Correct Answer
verified

Select the incorrect statement from the choices in reference to postnatal development of human infants.

Correct Answer
verified

Which of the following animals undergoes rotational cleavage?

Correct Answer
verified

Choose the letter of the best match from the following: -The limbs,tail bud,and internal organs form.

Correct Answer
verified

In human females,milk production is a result of

Correct Answer
verified

Which of the following is not formed by the developing mesoderm?

Correct Answer
verified

All of the following are stages of vertebrate development except

Correct Answer
verified

The first milk that is produced after birth is a yellowish fluid called

Correct Answer
verified

Exam 54: Animal Development

The ______ trimester of pregnancy is characterized by growth,formation of major nerve tracts,and formation of new brain cells.

Correct AnswerverifiedShow Answer

All of the following occur within the placenta except

Correct AnswerverifiedShow Answer

Choose the letter of the best match from the following: -The embryo is now called the fetus.

Correct AnswerverifiedShow Answer

The pattern of cleavage division characteristic of mammalian cells is

Correct AnswerverifiedShow Answer

According to the figure,which diagram shows the initial determination of primary germ layers?

Correct AnswerverifiedShow Answer

Select the incorrect statement from the choices in reference to postnatal development of human infants.

Correct AnswerverifiedShow Answer

Which of the following animals undergoes rotational cleavage?

Correct AnswerverifiedShow Answer

Choose the letter of the best match from the following: -The limbs,tail bud,and internal organs form.

Correct AnswerverifiedShow Answer

In human females,milk production is a result of

Correct AnswerverifiedShow Answer

Which of the following is not formed by the developing mesoderm?

Correct AnswerverifiedShow Answer

All of the following are stages of vertebrate development except

Correct AnswerverifiedShow Answer

The first milk that is produced after birth is a yellowish fluid called

Correct AnswerverifiedShow Answer

Correct Answer
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