No they can not be voted out.
Ex officio members of committees are members. Of course they can second a motion, and can do anything that any other member can do, unless they are somehow restricted by some other by-law of the organization. Ex officio simply means that a person is a member of the committee in question by way of holding some other office in the organization. She/he doesn't have to be selected or voted into the committee. There is no limitation on an ex officio member's rights in the committee just by reason of being an ex officio member.
Yes.
An ex-officio member can vote. The word ex-officio simply means that the person is a member of a committe or board because of their position, i.e., president but has nothing to do with that person's right to vote on the committee (for which they are rightfully a member).
ex officio
Ex-officio (not sure of the proper term but ex officio members of a committee can vote). The term means by virtue of office. The VP of the US is an ex offico member of the Senate and can vote to break ties. In addition, Robert's Rules of Order specifically states than an ex officio member has voting rights.
A Latin phrase which literally means 'by or through position (or, office),' 'ex officio' refers to a position, title, or benefit gained through holding another position of some kind. Thus an 'ex officio board member' is a person who is a board member (of some organization) because of another position or title (etc.) held by that person.
superintendent of public instruction.
Ex officio of a council is a member of a council due to holding office in the past, like ex trustees, or retired board members, or retired President of the company
ex officio
This means, roughly, "by way of office". This term is often used by people following Robert's Rules of Order. A person may be a member of a committee because he was voted into the committee by the membership. Other committee members may be members because of other positions or offices that they hold in the organization. As an example, the organization's elected treasurer may be, ex officio, a member of the Finance Committee, and this is made clear in the organization's bylaws, or other documents establishing the organization's authority. In this example, the treasurer doesn't have to be nominated as a member of the Finance Committee, and there is no vote on this. As soon as one is elected treasurer, she/he is "ex officio" a member of the Finance Committee. Or perhaps the Mayor is ex officio the member of some committee. This membership is not "honorary", as is sometimes mistakenly assumed. It is a full membership with the rights and privileges that go along with membership, unless limited by some other actions of the organization.
By virtue of holding a particular office or position; "by right of office". For example, you might be required to select a member of one board from the members of another board, making that member's selection ex officio, as he or she would not have been selected otherwise.
Cum ex apostolatus officio was created in 1559.