The governor shall have power to disapprove of any item or items of any bill making appropriations of money embracing distinct items while at the same time approving the remainder of the bill, and the part or parts of the bill so approved shall become effective and the item or items of appropriations so disapproved shall not take effect unless the same are separately reconsidered and repassed in accordance with the rules and limitations prescribed for the passage of bills over the executive veto. In all cases in which the governor shall exercise the right of disapproval hereby conferred he shall append to the bill at the time of signing it a statement of the item or items disapproved, together with his reasons for such disapproval, and transmit the bill and such appended statement to the secretary of the state. If the general assembly be then in session he shall forthwith cause a copy of such statement to be delivered to the house in which the bill originated for reconsideration of the disapproved items in conformity with the rules prescribed for legislative action in respect to bills which have received executive disapproval.