Which of the following is not a secondary reproductive organ?

Match the columns.

Column $I$	Column $II$
$(a)$ Testis and ovary	$(1)$ Part of reproductive organ that transports germ cells
$(b)$ Clitoris	$(2)$ Developing fleshy fold surrounding both sides of the urogenital groove
$(c)$ Oviduct	$(3)$ Gametes which produce germ cells
$(d)$ Scrotum,labium majora	$(4)$ Organs associated with sexual response

Secretion of large quantities of estrogen causes:

Which of the following statements are true about the female reproductive system?
$(A)$ Both estrogen and progesterone are necessary for development of follicle
$(B)$ Progesterone production is under the control of $LH$
$(C)$ The part of the oviduct is isthmus; has a narrow lumen and it joins the uterus
$(D)$ During pregnancy all events of the menstrual cycle stop and there is no menstruation
$(E)$ The graafian follicle ruptures to release the primary oocyte from the ovary by the process called ovulation

Given below are two statements.
Statement $I$: Mule is an intergeneric sterile hybrid.
Statement $II$: Mule is sterile due to failure of proper gametogenesis.
In the light of the above statements,choose the most appropriate answer from the options given below.

Consider the following four statements $(A-D)$ and select the option which includes all the correct ones only.
$(A)$ The male sex accessory ducts include rete testis,vasa efferentia,epididymis and vas deferens.
$(B)$ Leydig cells synthesise and secrete testicular hormones called androgens.
$(C)$ The female reproductive system is located in the pelvic region.
$(D)$ Each testis has about $250$ compartments called testicular lobules.