Which of the Following is Least True of or Least

Question

Which of the following is least true of or least associated with the placenta?
A) The site at which baby-to-be breathes
B) A very vascular structure
C) Replaces the glandular secretion of the corpus luteum
D) Nourishes the zygote as it matures into the morula

Accepted Answer

The placenta does not nourish the zygote as it matures into the morula; this early stage of development occurs within the fallopian tube and the uterus before the placenta is formed. The placenta's primary roles involve gas exchange, nutrient delivery, and waste removal for the developing fetus, not supporting the zygote's initial stages of cell division.