Given below are sets of 5 terms each. Without changing the first term, rearrange the remaining four, so as to be in logical sequence as per the directions given in brackets for each. One has been done for you as an example.
Example: Pathogen, active immunity, produces antibodies,
lymphocytes, antigen (defence mechanism of the body)
Answer: Pathogen -> antigen -> lymphocytes -> produces antibodies -> active
(iii)Seminiferous tubule, penis, urethra, epididymis, vas deferens (course of passage
of sperms in man)