The 71-year-old former minister said the party expects investment in infrastructure to create jobs and the pull needed to attract industry.
Dinesh Trivedi quit from the upper House of Parliament last month, saying he was feeling suffocated in the Trinamool Congress and was unable to bear various incidents that are happening in the state.
Trivedi joined the BJP in the presence of its president J P Nadda, and Union ministers Piyush Goyal and Dharmendra Pradhan besides other leaders.
The TMC's allotted time on the discussion was exhausted after both the speakers spoke on their designated days, Ray said as he questioned why Trivedi was allowed to speak despite this.
Mamata should know everybody should keep their head up. If there is an environment of violence, then there is fear. If there is fear, your head is not high, Trivedi said.
Gupta also said Trivedi's resignation was not a setback for the TMC and will not affect the party's poll campaign in the state.
"Not just Dinesh Trivedi ji, whoever wants to do honest work, cannot stay in Trinamool Congress. If he wants to join Bharatiya Janata Party, we will welcome him," BJP general secretary said.
In his final address, he stated increasing 'political violence' as the reason for his exit.
Mamata Banerjee extended her "full support" to former Yashwant Sinha in his fight for the cause of farmers and said she was concerned about the BJP veteran, who was detained by Maharashtra police.