Name the part performing the following functions in the human male reproductive system:
(a) Carries sperm
(b) Production of male gametes
(c) Whose secretion makes the transport of sperm easier
(d) Provides suitable temperature for sperm formation
(a) Sperm transport: The vas deferens moves sperm from the testes to the urethra.
(b) Sperm production: The testes generate sperm (male gametes).
(c) Sperm transport aid: The seminal vesicles release a fluid that supports sperm transport and provides nourishment.
(d) Temperature regulation: The scrotum maintains the optimal temperature for sperm production by cooling the testes.
Select the option having correct matching of the organism given in Column I with the mode of reproduction in Column II: Column I {0.2cm} 
What changes are observed in the uterus:
(i) Subsequent to the implantation of the zygote and
(ii) If an egg does not get fertilized?
Name the part performing the following functions in the human female reproductive system:
(i) Production of eggs
(ii) Site of fertilization
(iii) Site of implantation
(iv) Entry of the sperms