Both were fairly small, especially in the brass and percussion sections. Also clarinets were not in existence until early classical period, so baroque groups wouldn't have them at all.
Classical orchestras, baroque and folk
it was first baroque, then classical, then romantic.
how many concert orchestras are there playing a Western style of classical music
In Baroque music, phrasing was continuous, while in Classical era music phrasing was short and based on cadences.
which key element contained in the Baroque music that classical music left out
Classical orchestras, baroque and folk
it was first baroque, then classical, then romantic.
how many concert orchestras are there playing a Western style of classical music
Baroque, Romantic, Classical
In the regular "music textbook" usage of the terms, yes - Baroque preceded classical.
Medieval-Renaissance-Baroque-Classical-Romantic-20th Century
In Baroque music, phrasing was continuous, while in Classical era music phrasing was short and based on cadences.
string orchestras
The Age of Enlightenment overlapped with the Baroque period but is usually associated with the transition to the Classical period in music and the arts. The Classical period followed the Baroque period and emphasized clarity, balance, and order in contrast to the ornate and emotional style of the Baroque.
which key element contained in the Baroque music that classical music left out
The baroque era was full of cantatas when the toccatas or no voice movements were predominant in the classical era.
Most orchestras consist of string and bow instruments with a horn section. There are orchestras who have several classical guitarists in their band. Seldom do these players have solos.