Select the odd one out regarding the cells/layers associated with early embryonic development.

The period between $12$ and $18$ years of age in a person is known as adolescence.

The figure shows a section of human ovary. Select the option which gives the correct identification of either $A$ or $B$ with function/characteristic.

Match the following columns:

Column-$I$	Column-$II$
$(1)$ Placenta	$(a)$ Stimulates uterine contraction for parturition
$(2)$ $hPL$	$(b)$ Provides nutrition to the embryo
$(3)$ Relaxin	$(c)$ Antibody in colostrum
$(4)$ $IgA$	$(d)$ Hormone secreted by placenta

Which is the correct graphical representation of the pituitary hormone and ovarian hormone levels during the menstrual cycle?

Match the columns.

Column $I$	Column $II$
$(a)$ Corpus luteum	$(1)$ Initially in abdominal cavity then in scrotum
$(b)$ Testis	$(2)$ At the anterior part of scrotum in male
$(c)$ Myometrium	$(3)$ Graafian follicle
$(d)$ Penis	$(4)$ Uterus