Consider the following statements regarding the root system of angiosperms.
I.$\quad$ In monocots, the fibrous root system arises from the base of the$\quad$$\quad$ stem.
II.$\quad$ The region of elongation is called the root hair region.
III.$\quad$ In sweet potato, the adventitious roots get swollen and store $\quad$$\quad$food.
IV. $\quad$The stems of maize and sugarcane have supportingroots called$\quad$$\quad$ prop roots.