Describe the location and function of the following: Placenta and Acrosome.

Which of the following pairs is correctly matched?

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:

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?

If the number of chromosomes in most body cells of a mammal is $40$,the cells in the seminiferous tubule will have

Identify True/False statements. Correct each false statement to make it true.
$(a)$ Androgens are produced by Sertoli cells. (True/False)
$(b)$ Spermatozoa get nutrition from Sertoli cells. (True/False)
$(c)$ Leydig cells are found in ovary. (True/False)
$(d)$ Leydig cells synthesise androgens. (True/False)
$(e)$ Oogenesis takes place in corpus luteum. (True/False)
$(f)$ Menstrual cycle ceases during pregnancy. (True/False)
$(g)$ Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/False)