RQ: Sonic Wings (SFC) random 1UPs?

[Battletoad]

I'm just dedicating myself into a little score battle of Sonic Wings (Super Famicom version). Each one of us has gotten a seemingly random 1UP in one of his runs, for each one it has happened in a different stage/location. And no, of course I don't mean the fixed score extend for 200,000 points, but rather collectable 1UPs (floating around like powerups) that appear from a destroyed enemy, e.g. from a turret in the end of the Arabia stage or from a big ship in the Sea stage afterwards.

So does anybody know if these extra lives are really random or if their appearance can be influenced in some way?
Do they also exist in the Arcade version?

[Battletoad]

No one?

[Mero]

I can't answer your question the the Super Famicom version but in the arcade version there is only one score based extend, no item based extends.