<prompt> Which one of the following is not a germ cell tumour of ovary-DysgerminomaTeratomaEndodermal sinus tumorBrenners tumour  <response>: Ans. is d i.e., Brenners tumour Surface epithelial tumorsGerm cell tumorsSex cord stromal tumors Serous tumor Teratoma Thecoma Mucinous tumor Dysgerminoma Fibroma Endometrial tumor Endodermal sinus tumor Granulosa-theca cell tumor Clear cell tumor Choriocarcinoma Sertoli-leydig cell tumor Brenner tumor Hilus cell tumors Cysadenofibroma 