In human female, the blastocyst
(a) forms placenta even before implantation
(b) gets implanted into uterus 3 days after ovulation
(c) gets nutrition from uterine endometrial
secretion only after implantation
(d) gets implanted in endometrium by the
trophoblast cells.

1 Answer

Answer :

(d) gets implanted in endometrium by the
trophoblast cells.

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