Holding voter-less polls constitutional?

It is strange and ridiculous that 153 out of 300 members of the parliament were elected without votes and the rest 147 members were declared elected with only 10% vote cast (EC claims it to be 40%). And these so called ministers including the PM are shamelessly continuing their work saying that doing this is a constitutional necessity. Does our constitution say that the ruling party should hold general election without people's participation and take office without slightest hesitation? It is strange, because there is no opposition in the house except for a few members who are loyal to the government. Noted personalities including civil society members are saying that it is legal but not legitimate.
Some shameless ministers keep saying that they will hold office for 5 years. Is it so? Has Bangladesh failed totally?