Which statement is correct?
A)Implantation is accomplished by enzymatic activity of the trophoblastic layer of the ovum.
B)The endometrium at the site of implantation is converted into the nutrient-rich decidua.
C)Implantation occurs within 24 hours after fertilization.
D)Both a and b
E)All of the above

Question

Quizplus · Accepted Answer

Implantation is accomplished by the trophoblastic layer of the ovum, but not necessarily through enzymatic activity. The endometrium at the site of implantation is indeed converted into the nutrient-rich decidua. Implantation does not occur within 24 hours after fertilization; it typically takes 6-10 days after fertilization for the blastocyst to implant in the uterus. Therefore, option E is incorrect. Option A is only partially correct.

Which Statement Is Correct