Question

Which sabha check the power of grampanchayat

Answer 1

gram sabha check the powers of grampanchayat

Answer 2

The basic difference between Gram Sabha and Gram Panchayat is that Gram Sabha consists of every adult member of village (generally, the population of village should be more than 1500), while Gram Panchayat is the executive five members elected by members of Gram Sabha to work for the village development.
In short ,GRAM SABHA.