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Biology 12 Chapter 21
Development and Aging - 2
1.
Following fertilization zygote undergoes mitotic division called……………?
a) Gastrulation
b) Organogenesis
c) Growth
d) Cleavage
2.
Cleavage is the……………..division?
a) Mitotic
b) Binary
c) Equal
d) Meiotic
3.
What does daughter cells of first mitotic division called?
a) Blastomere
b) Trophoblast
c) Blastocyst
d) Morula
4.
What is the size of morula?
a) Equal to egg
b) Equal to blastomere
c) Equal to gastrula
d) Equal to zygote
5.
Morula appears on day…………… after zygote formation?
a) 2-3
b) 1-2
c) 4-5
d) 5-6
6.
Blastocyst appears on day…………… after zygote formation?
a) 5-6
b) 4-5
c) 2-3
d) 1-2
7.
The cavity formed by cells moving away from central area is called..................?
a) Blastomere
b) Vegetal pole
c) Blastocoel
d) Animal pole
8.
Hollow sphere embryo is called……………..?
a) Morula
b) Blastula
c) Blastocyst
d) Trophoblast
9.
The embryonic stage in which hollow sphere embryo fromed is called……………?
a) Trophoblast
b) Epiblast
c) Hypoblast
d) Blastocyst
10.
What are the large and flattened cells of blastocyst called?
a) Inner cell mass
b) Epiblast
c) Trophoblast
d) Hypoblast
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