There is no ruby in groudon.
in cave of origen
No, Groudon does not evolve in Pokémon Ruby.
after you see groudon for the first time but only see it. i no this isn't very helpfull, but ask the question "How do i catch groudon in Pokemon ruby" or ask "Where and how to catch groudon in Pokemon ruby"
groudon is found in sootopolis city in the cave but don't use a master ball on groudon use it on rayqauza in sky pillar You can find Groudon at the Cave of Origin at Sootopolis.
YOU CANT!!!!!!!!!!!!!!!!!!! Only in Emerald and Ruby.
In emerald find out in ruby orgin cave.
you can't. It's only found on ruby.
you can find groudon, mew, mewtoo, rayquaza, kyogre...
You can't get Kyogre in Pokemon Ruby but you can get Kyogre in Pokemon emerald and sapphire and in ruby you only get groudon and rayquaza. In sapphire you get Kyogre and rayquaza and in emerald you can get groudon, Kyogre, and Rayquaza.
I really hope you are trolling. if not, Groudon cannot be found in gold version. or silver version. Groudon was introduced in ruby and sapphire
there is not any kyogre in ruby. there is only groudon! kyogre is only in sapphire and emerald.