your question doesn't make sense
You can't find a ho oh in diamond or pearl you can only migrate it over.
You have to trade it over from Diamond or Platinum, it can't be received normally in Pearl. Sorry.
You can't. You need to catch a glameow on Pokemon pearl, evolve it and/or trade it over to diamond
trade diamond from Pokemon diamond onto Pokemon pearl
you need to trade it over from Pokemon diamond/pearl/platinum.
You trade Magmar from Pokemon pearl,diamond,or platinum to ether Pokemon pearl,diamond,or platinum.
Trade him over from platinum,diamond,or pearl.
THE POKEMON THAT ARE NOT FOUND IN DIAMOND AND PEARL ARE:MANAPHY PHIONE
diamond
You can get Palkia in Pearl, otherwise you have to transfer Palkia from Pokemon Pearl to Pokemon Diamond.
the Pokemon is rotom to get him you need to trade it over from diamond pearl or platinum
No, you can't catch Deoxys on Pokemon Diamond & Pearl unless you have cheats. You can transfer it from your GBA to Pokemon Diamond and Pearl though