Egypt's Shura Council (upper house of parliament) convened on Wednesday following the adoption of the new constitution.
The Higher Elections Commission earlier announced that the constitution was approved by 63.8 percent of voters.
According to the new constitution, Shura Council assumes full legislative powers until the election of a new People's Assembly (lower house) which should be within 60 days of the constitution's enforcement.
The quorum of the Shura Council was accomplished after Mursi appointed 90 members to it, which is one-third of the 270-member council.
The top priority of the Shura Council will be to draft a new parliamentary elections law, the council is also expected to discuss social insurance laws, Islamic bonds and laws regulating demonstrations and strikes.
Prime Minister Hisham Kandil will deliver a speech in the opening session and the newly-appointed members will take the constitutional oath before the sessions convene.