स्पंज के सिरे पर स्थित बड़ा छिद्र कहलाता है ? - The large hole at the tip of the sponge is called? - Sponge Ke Sire Par Sthit Bada Chhidr Kehlata Hai ? General Science in hindi, Biology asculum question answers in hindi pdf redula questions in hindi, Know About Austria General Science online test General Science notes in hindi quiz book trachia