A quintet.
A 5 person band is a quintet. A 3 is a trio A 4 is a quartet
The particular instruments used in a piece of music; the manner in which a piece is arranged for instruments.
The instruments of the time. However if the score of a particular piece is looked at it would tell you exactly which instruments are used for that piece.
If the piece is only 3 minutes long, it's not a symphony.
Rub chalk on a piece of yarn and stretch it across a 3x5 board do this over 5 times
A Quartet.
The actual count and type of woodwinds instruments required in an orchestra is determined by the composer of the piece. Not every single woodwind instrument is used in every single classical piece.
Instruments that are blown into are either woodwind instruments, double reed instruments, or brass instruments, with the single exception of a harmonica, which is in a class all its own.
drums
A cappella
Generally only one, though it really depends on the piece of music. 20th century music tends to call for more (and sometimes very specific) percussion instruments.
Song with no musical instruments is called "a cappella".