Pasta comes from what type of wheat and ground in to semolina

Semolina is the hard part of the grain of durum wheat. When hard wheat is ground, the endosperm--the floury part of the grain--is cracked into its two parts, the surrounding aleurone with its proteins and mineral salts and the central floury mass, also called the endosperm, which contains the gluten protein that gives hard wheat its unique properties for making good pasta.