Sunday, March 13, 2011
2.53 - Roots
Features in a root structure: branching pattern. This increases the surface area for absorption of water.
Process of "absorbtion": active transport of minerals from roots.
- 1. Active transport takes up minerals into their cytoplasm making it concentrated.
-2. Water is transported from roots to the leaf by the xylem tissue. Water enters the cell because it is concentrated inside the cells and its is dilute in the soil water.
-3. Osmosis takes place, changes water from dilute to concentrated.
Roots branch out to find a water source. They have hairs, caused by cell wall extended outwards "(this increases the surface area absorption of H20)"