No, because Mega Evolution wasn't introduced until Pokemon X and Y.
Have it hold the Sceptilite, then press "Mega Evolution" during a battle to Mega Evolve it.
Hitmonlee cannot evolve any further, nor does it have a Mega Evolution form.
Venusaur is the final evolution of the line beginning with Bulbasaur. Venusaur cannot evolve into another form. It can, however, breed (at the Pokemon Daycare) and produce an egg which will give you access to an earlier evolution. Venusaur can Mega Evolve into Mega Venusaur using the Venusaurite. Mega evolution, unlike regular evolution, is temporary, only happening during battle.
Sceptile learns false swipe at level 59. This Pokemon evolves from Grovyle at level 36. Sceptile is a final form but using a mega evolution stone, does have a mega evolution.
Xerneas does not have a Mega Evolution.
No, because Mega Evolution wasn't introduced until Pokemon X and Y.
Have it hold the Sceptilite, then press "Mega Evolution" during a battle to Mega Evolve it.
Nowhere. As of now there is no such a thing as a Mega Salamence.
Seviper does not have a Mega Evolution.
Lapras cannot evolve any further in Pokemon, nor does it have a Mega Evolution.
Aerodactyl doesn't have a traditional evolution. It does, however, have a Mega Evolution, which you can evolve it to by having it hold the Aerodactylite and selecting "Mega Evolution" during a battle.
because the pokemon company wanted to give her one :3
That's unknown. Arceus is already too strong as it is now, it doesn't need a Mega Evolution, and holding a Mega Stone would prevent the use of the Multitype plates anyway.
Hitmonlee cannot evolve any further, nor does it have a Mega Evolution form.
Venusaur is the final evolution of the line beginning with Bulbasaur. Venusaur cannot evolve into another form. It can, however, breed (at the Pokemon Daycare) and produce an egg which will give you access to an earlier evolution. Venusaur can Mega Evolve into Mega Venusaur using the Venusaurite. Mega evolution, unlike regular evolution, is temporary, only happening during battle.
There is no such thing as a mega stone in Pokémon Pearl. Mega stones were first introduced in Pokémon X and Y and are required for certain Pokémon to Mega Evolve, which is a temporary new evolution stage.