What is this type of grass called?

Question

http://biology.usgs.gov/cro/ScienceInYourState/North_Dakota/images/CRP_restored-cropland_ND-MN.jpg

Like? I know its like eadow or Prarie grass, but like is there a specfic name? And can you give me it's STEM type and ROOT type.

** OPTIONAL, IF POSSIBLE!**Or can you give me a whole lists of flowers, witht ehre root and stem types

Answer 1

crab grass.