Oestrus cycle is seen in

The sex of a fetus can be determined by examining the cells of the amniotic fluid for the presence of:

Given below are two statements:
Statement $I:$ Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct.
Statement $II:$ The cavity of the cervix is called cervical canal which along with vagina forms birth canal.
In the light of the above statements,choose the correct answer from the options given below:

Which of the following female structures is homologous to the male structure?

The figure given below depicts a diagrammatic sectional view of the human female reproductive system. Which set of three parts out of $I-VI$ have been correctly identified?

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