108 to the exclusion of any other business, elect from amongst its members a Speaker and a Deputy Speaker. When office of Speaker or Deputy Speaker becomes vacant, in any way, the Assembly elects another member as Speaker or Deputy Speaker. The elected Speaker and Deputy Speaker according to clause 2 of Article 53 read with Article 127 take oath before the House in the form set out in the Third Schedule. Summoning and prorogation of Provincial Assemblies Article 109 authorizes the Governor of the Province to summon Provincial Assembly to meet at such time and place as he thinks fit. Where the Governor summons Assembly he is authorized to prorogue it too. In addition, the Speaker, on a requisition signed by not less than one-fourth of the total membership of the Provincial Assembly, can summon it, at such time and place as he thinks fit, within fourteen days of the receipt of the requisition. Article 54(3) read with Article 127 also empowers the Speaker to prorogue the session where he summons it. Number of sessions and days during a year Article 54 (2) and (3) read with article 127 say there are at least three sessions of Provincial Assembly every year, with not more than 120 days intervening between the last sitting of the Assembly in one session and the date appointed for its first sitting in the next session. While clause 'g' of Article 127 read with Proviso to Article 54 provides that Provincial Assembly shall meet for not less than 70 working days in each year. Duration of Provincial Assembly The term of Provincial Assembly in Pakistan according to Article 107 is five years unless it is sooner dissolved, from the day of its first meeting and stands dissolved at the expiration of its terms. Other methods of dissolution of Provincial Assembly (a) Dissolution of Provincial Assembly on the advice by the Chief Minister. – Under Article 112, clause 1, the Governor of a Province is empowered to dissolve Provincial Assembly if so advised by the Chief Minister. Where the Chief Minister so advises, the Provincial Assembly stands dissolved at the expiration of 48 hours. (b) Dissolution of Provincial Assembly by the Governor on the approval by the President. – Clause 2 of the same Article again empowers the Governor to dissolve Provincial Assembly subject to the approval of the President, where he is of the opinion,