as far as i know its not possible to obtain a "wild" groudon on Pokemon platinum. however you can trade it in from other games such as Pokemon soul silver.
You cant
You cant
you cant evolve a wild Pokemon in Pokemon platinum you either have to catch the wild Pokemon and then evolve him/her or kill the wild Pokemon.
You CAN'T get Groudon in Platinum I suggest you either migrate from Pokemon Ruby,Or You Can Just Use AR(Action Replay)
No, the only way to get them is to migrate them from R/S or Emerald.
They are not found in the wild in Pokemon Platinum.
you cant without cheats or if your very lucky on emerald or ruby then migerate.
No, Bibarel's are one of the worst wild pokemon there are in pokemon platinum pearl or diamond
no
you can find a wild kirlia in the Pokemon mansion area but not in the Pokemon mansion
you can catch in in ruby sapphire emrald pokemon dp platinum and pokemon black and white but groudon exists in ruby and emrald.kroge exisists in sapphire only
If you have Pokemon heartgold, you cannot get groundon unless you trade with someone who caught a groundon on soul silver. PS- It has to be from the embedded tower, any migrated groundon will not work.