Nope, the games aren't backward compatible.
You need to get the National Pokedex. Then use Poke Transfer. But you don't get the White Pokemon on Pearl. You can never get the Pearl Pokemon back to Pearl.
You have to trade it from platinum, diamond or pearl
Yes you can but you can't trade from black to pearl or white to diamond because the games are not compatible with each other because the Pokemon in black and white will come up as ? in the pokedex's of the other games. But you just can't trade to pearl from black or white sorry. However you can trade between black and white using infrared connection. (the other games don't have infrared that's why the game cancels the trade between pearl and black or diamond to black).
yes you can but you cant trade from pearl , diamond , platinum , soul silver , heart gold to Pokemon black & white
You can't trade Pokemon olny put Pokemon in Pokemon white and black's pal park and you can't return it back.
You can use the Pokemon transfer lab in between black city and nimbasa city to transfer from pearl to white. You cannot transfer Pokemon from white back to pearl. You need 2 ds systems.
no where u have to catch it on pearl then trade it
yes.though of course you cannot trade or battle with Pokemon from the Unova Region as they are new, and Pokemon Pearl will not recognize them.
You cannot trade between the new games of Pokémon Black and Pokémon White and the previous games of Pokémon Diamond and Pokémon Pearl and there is no way for you to trade Pokémon from "Pokémon Black or Pokémon White" over to Pokémon Diamond or Pokémon Pearl. But you can transfer any Pokemon from the old ds games TO black or white .
You cannot find Heatran in Pokemon White. But if you have it in Diamond, Pearl, or Platinum you can simply trade it.
You will need to trade one from diamond, pearl or platinum to white.
You must beat N at his castle then go to the Pokemon transfer lab.