One of your Rivals has it. It will be one of the first Pokemon you face. * If you chose Piplup then your Rival has it * If you chose Chimchar then Dawn/Lucas has it If you haven't yet found one, then follow the storyline. You'll face your Rivals many times during the storyline so you're definitely going to face one.
#151 is Manaphy. from turtwig to manphy, then national Dex is bulbasaur to arceus
You need to beat the elite four and complete the Sinoh dex
You have to finish the Sinnoh 'Dex, then you go to the Professor guy and he will upgrade to National 'Dex. Then you can do the Pal Park.
In the sinoh dex, Natinoal dex, 493
You need to complete the Sinoh dex and beat the elite four and you might have to do something else but I don't think so
National Pokedex #387 - Turtwig
yu have to get every Pokemon on the sinoh dex
yes you can because you can catch certain Pokemon and make them evolve or trade with a friend to fill up your pokedex by anglebaby 17
all you have to do is see every Pokemon in the sinoh dex then you go to prof rowans lab and he will give you your national dex
In the Sinnoh Dex, it's Turtwig. In the Nat Dex, it's Bulbasaur.
bulbasaur and if you mean in the sinnoh dex it is turtwig
I'm not sure about catch but in the Sinoh dex you can see 150 Pokemon