Ureters act as urinogenital ducts in (a) human males (b) human females (c) both male and female frogs (d) male frogs.
Option D.In male frogs, two ureters act as urinogenital duct which open into the cloaca. They run backwards from the kidneys and open into the cloaca. In female ureters carry urine alone, while in male both sperms and urine are carried. Hence, are called urinogenital ducts.