Landscapes generally use wide angle and ultra wide angle lenses.
More often than not, yes, but it also depends on the scape you want to land:
A photograph is more than a bunch of pixels
|AF4_2483 Surfing the Serengeti by DaveInHouston|
from Hot Air Balloon view
|Peregrine Falcon by Psychic1|
from Best Wildlife Photo of the Week - 4