Pro tem Speaker Appala Naidu later made the MLA from Nellore Rural constituency take oath again as per the Assembly rules.
Deputy Chief Minister Amjad Basha took the oath in the name of 'allah'
On the first day of the first session of the newly elected Assembly, all but one MLA took the oath.
G. Srinivasa Reddy, YSRCP MLA from Narsaraopet constituency, could not attend the session due to personal reasons.
T. Sitaram will be elected as Speaker on Thursday while Governor E.S.L. Narasimhan will address the House on Friday.
The YSRCP stormed to power in the state last month, winning 151 seats in 175 member Assembly.