Forest:Full of grass and trees.Oak and Birch trees grow here,along with mushrooms,tall grass and flowers.Has a variant with lots of flowers and less trees
Desert:Consists mainly of sand.Cactus and dead bushes can be found here,and Sandstone is usually found under a couple layers of Sand.Villages and desert temples can be found in this biome.
Plains:A flat,green biome with few trees and a lot of tall grass.This is the onlybiome where horses spawn. Villages can also be found in this biome.
Swampland:A drab biome with a lot of shallow water lily pads.Trees here have vines growing on them.mushrooms are very common in this biome.Slimes spawn above ground here and it is the only biome where witchese and witch huts spawn.
Jungle:A very overgrown biome with many trees.thick jungle trees covered with vines are common.Jungle temples are found in this biome.It is the only place where Ocelots and Cocoa Plants are found naturaly.
Ice Plains:Essentially a plains biome covered in snow.It has a variation with large spikes made of Packed Ice.
Cold Taiga:A snowy biome abundant with Spruce trees.Wolves spawn commonly in this biome.
Extreme Hills:A biome full of tall mountains and valleys.Flouting islands and waterfalls are common here. It is the only biome where Emerald Ore and Silverfish blocks appear naturally.
Ocean:A huge biome full of water.Smal islands can be found around this biome,but friendly mobs do not spawn on them.Entrances to caves are fairly common underneath the water.
Mushroom Island:A very rare biome that is found in ocesn biomes.Instead of grass,it has Mycelium that huge mushrooms can grow on.Mooshrooms are the only mobs who spawn in this biome.
Deep Ocean:A deeper variation of the ocean biome.The floor of the ocean is covered with gravel.
Birch Forest:A forest made solely out of birch trees.
Roofed Forest:This biome is composed of Dark Oak Trees,a mostly closed roof of leaves,and ocassional large mushrooms.Its trees are very close to each other and it has such a dense foliage that some of the forest will be dark enough for hostile mobs to psawn,even during the day.
Taiga:Taiga biomes no longer have snow,the old Taiga is now Cold Taiga.
Mega Taiga: This biome is composed of spruce trees,some of wich are 2x2 thick.Moss stone boulders appear frequently,brown mushrooms are very abundant and a dirt-type block called Podzol can be found in this biome.There are also patches of dirt that don`t grow grass.Wolves may also spawn here,as they do in normal Taiga biomes.
Extreme Hills +: An Extreme Hills biome with Spruce trees.
Savnna:A relatively flat and dry biome with yellowish grass and many Acacia Trees.NPC Vilages can generate in this biome(the other beaing plains)where horses spawn naturally.Rain never falls in this biome,similar to the desert.
Mesa:Mesa is an exotic biome made of hardened clay and stained clay,with dead bushes around similar to a desert.Red Sand will also generate here insted of regular sand.
Nether:Lava is abundant here,forming large lakes as well as many waterfalls from higherlevels.Glowstone,Nether Quartz Ore and Soul Sand can be found here.It is also home to a numer of mobs, such as ghasts,blazes,zombie pigmen,wither skeletons and magma cubes.Nether fortresses also generate here.
The End:A large floating island made entirely of End Stone.A number of obsidian pillars topped with Ender Crystals can be found here.only Endermen and sole Ender Dragon spawn here.
This are the mostly biomes who exist in Minecraft (biomes above).