Question 3
Put the water route in order: soil water, root xylem, root hair, mesophyll cells, cortex.
The right answer is the one marked above.
Soil water, root hair, cortex, root xylem, mesophyll cells. The endodermis sits between the cortex and the xylem, and after the root xylem the water travels up the stem xylem to the leaf veins.
Every stage of this was a page in chapter 1. The route adds no new tissue — it just sends water through the ones you already have.