Exeggutor is the last form of exeggcute.
Yamna does not evolve in FireRed.
Lickitung does not evolve in FireRed.
Dragonair will evolve at level 55.
Electabuzz is not able to evolve in FireRed.
Rhydon is not able to evolve in FireRed.
pidgeotto will evolve at level 36
Rattata will evolve at level 20.
Ghastly will evolve at level 20.
At level 33.
Level 24.
Level 25.
Level 26.