31, same as all other pkmn games
Venonat evolves into Venomoth, starting at level 31.
Level 31
No, Hitmontop does not evolve in Pokémon SoulSilver.
It evolves at level 31
he does not evolve.
ditto does not evolve
No
almost all of them do.
You need to trade it and it will evolve
A Shuckle doesn't evolve
Paras will evolve into Parasect.
Togekiss cannot evolve.