Poliwhirl evolves into Politoad when you trade it while it is holding a King's Rock.
Polywhirl evolves using a waterstone and if you want a polytoad you will Need a kings rock and trade the polywhirl.
Haunter to gengar...graveller to golem...kadabra to alakazam..polywhirl to polytoad (make sure its holding king's rock)...slowbro to slowking (king's rock)..all i can think of so far :|
Poliwhirl actually has a branched evolution, which means it can evolve to more than one pokemon. One way (Easiest and Classic) is to use a Water Stone so it will evolve into the Water/Fighting Pokemon Poliwrath. Or, you can give it a King's Rock and trade it to somebody so it will evolve into a Politoad ... and then trade it back of course :P.
To get the Pokemon Poliwrath in Pokemon Diamond version you have to evolve a Polywhirl. To do this, you need to expose it to a water stone.
POLYWHIRL!
You can't evolve Yanma in Leafgreen. This is because Leafgreen was made before Yanmega was made. So basically in Leafgreen, Yanma is a Pokemon that can't evolve.
You can't on leafgreen.
you cannot evolve a porygon2 in leafgreen
It evolves into a Polywhirl at Level 25, and then to a Polywrath when given a water stone.
no
No.
no