No Groudon will not be able to mega evolve in Pokémon Omega Ruby or Pokémon Alpha Sapphire however Groudon itself is capable of doing a primal reversion which will revert it into Primal Groudon but it needs to be holding the Red Orb item in order to become Primal Groudon and while the primal reversion is similar to the process of Mega Evolution the process of Primal Reversion is automatically triggered and does not count towards the limit of only one Mega Evolution per battle.
You could say yes. Groudon will have a primal evolution (which resembles a mega evolution). So, yes.
You battle Kyogre for your chance to capture it in Pokemon Alpha Sapphire after you capture the groudon.
Primal Groudon is a fire and Ground-type Pokémon and will be seen in the Omega Ruby and Alpha Sapphire game.
Actually Pokemon Omega Ruby and Alpha Sapphire is not out yet, but I strongly believe Bulbasaur will evolve at level as usual I doubt it would change dramatically.
It evolves by happiness
By leveling It up to level 16
Ponyta evolves into Rapidash starting at level 40.
These Pokemon can be found before the National Dex: Latias (Alpha Sapphire), Latios (Omega Ruby), Kyogre (Alpha Sapphire), Groudon (Omega Ruby), Regirock, Regice, and Registeel. These Pokemon can only be obtained in the Delta Episode: Rayquaza and Deoxys. Post-National Dex Legendary Pokemon are: Regigigas, Ho-Oh (Omega Ruby), Lugia (Alpha Sapphire), Heatran, Mesprit, Uxie, Axelf, Palkia (Omega Ruby), Dialga (Alpha Sapphire), Giratina, Cobalion, Terrakion, Virizion, Reshiram (Omega Ruby), Zekrom (Alpha Sapphire), Kyurem, Raikou, Entei, Suicune, Tornadus (Omega Ruby), Thundurus (Alpha Sapphire), Landorus, and Cresselia.
There is no roller skate item in Alpha Sapphire.
Yes, a Pokemon that has been stopped from evolving will continue to attempt to evolve until it reaches level 100.
After you complete the Primal Kyogre or Primal Groudon narrative, you can go to the left of the Pokemon League entrance to obtain the Mewtwonite Y.
Swablu evolves into Altaria at level 35. Altaria can mega evolve in Pokemon Omega Ruby and Alpha Sapphire when it is holding a Altarianite during a battle.
You can catch Skitty in Pokemon Omega Ruby and Alpha Sapphire in the barks of trees.