1- The blastula undergoes successive mitotic divisions, increasing the number of:
blastomeres
morulas
blastocysts
tropoblasts

2- The morula
has a tightly compacted outer cell mass
is formed when fluid is secreted into the blastocyst cavity
will become the fetal portion of the placenta
attaches to the superior wall of the uterus

3- Cells of the early blastocysts that will become the embryo
epiblast
embryoblast
tropoblast
cytotropoblast

4- Proliferates into cytophoblast and synthiotropoblast
epiblast
embryoblast
hypoblast
tropoblast

5- Once lining of the amnion is completed it
forms a tigthly compacted cell mass
fills with amniotic fluid
forms the yolk sack
divides into two cell layers

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Answers:

1- The blastula undergoes successive mitotic divisions, increasing the number of:
Answer: blastomeres

2- The morula
Answer: has a tightly compacted outer cell mass

3- Cells of the early blastocysts that will become the embryo
Answer: embryoblast
(the epiblast is found in the late blastocyst)

4- Proliferates into cytophoblast and synthiotropoblast
Answer: tropoblast

5- Once lining of the amnion is completed it
Answer: fills with amniotic fluid