<span>blastocyst
The outer layers of the blastocyst turn in to the trophoblast after implantation. The trophoblast forms the placenta.</span>
Your answer should be Amoeba because it has a large pseudopods attach to their end
A+,A-,O+ and O- can give to blood type A+
They hold DNA( hope this helps)
B. tears , this is not a first line of defense
