Governor-General
Definition
The representative of the monarch in countries where the King or Queen is head of state but does not reside.
Explanation
In Canada and Australia, the Governor-General represents the monarch and performs many of the head of state's duties, including giving Royal Assent to legislation, opening Parliament, and commissioning the Prime Minister. The Governor-General acts on the advice of the Prime Minister and Cabinet. While the role is largely ceremonial, the Governor-General has reserve powers that could theoretically be exercised in a constitutional crisis. The appointment is made by the monarch on the advice of the Prime Minister.
Why this matters for your test
Canadian and Australian test takers should know what the Governor-General does and who currently holds the position.
Source: General civics terminology