Tuesday, 15 March 2011

Biology 2.53


Roots increase surface area by having a branching pattern. This is on a tissue level.
Roots increase surface area also by having root hairs.
Root hairs are extensions of the cell wall. They increase surface area on a molecular level.
Osmosis is the movement of water from a higher water concentration to a lower water concentration through a concentration gradient.
Water moves across the cortex of the root to the xylem by osmosis.

No comments:

Post a Comment