<prompt> Placental alkaline phosphatase is marker of ?Theca cell tumourTeratomaChoriocarcinomaSeminoma  <response>: Answer is d i.e. Seminoma Placental alkaline phosphatase is a marker of seminoma. Also know Gamma-glutamyl-transpeptidase is marker of -- seminoma testis AFP is not produced by -- seminomas and Choriocarcinomas 