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Biology 12 Chapter 21
Development and Aging - 12
1.
Which hormone is detected in blood during pregnancy?
a) LH
b) hCG
c) GnRH
d) FSH
2.
What is included in 1st trimester?
a) Fertilization
b) All of them
c) Blastocyst formation
d) Blastocyst implantation
3.
What is included in 1st trimester?
a) Major events of organogenesis
b) Extra embryonic layers development
c) All of them
d) Placenta development
4.
By the end of………..week, implantation of blastocyst occur?
a) 3rd week
b) 5th week
c) 2nd week
d) 4th week
5.
Which layer of blastocyst mingles with endometrium?
a) Holoblast
b) Epiblast
c) Meroblast
d) Trophoblast
6.
Which is the extra embryonic membrane?
a) Amnion
b) Chorion
c) All of them
d) Allantois
7.
Which extraembryonic membrane provides fluid environment?
a) Chorion
b) Amnion
c) Allantois
d) Yolk sac
8.
Which membrane is first site for red blood cells production?
a) Allantois
b) Yolk sac
c) Amnion
d) Chorion
9.
Part of which membrane incorporated into umbilical cord?
a) Yolk sac
b) Chorion
c) Amnion
d) Allantois
10.
Which membrane contributes to the circulatory system?
a) Allantois
b) Chorion
c) Amnion
d) Yolk sac
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