Question

The diagram below represents these pathways of water from the soil into the plant.
         

1. Name the structures labeled K and L.
2. Explain how water from the soil reaches the structure labeled L. 
3. Name the process by which mineral salts enter into the plant. 

Answer 1

1.  
   1. K= root hair reject hair root
   2. L= xylem vessel
2. Water moves from the soil into the root hair by osmosis because the concentration of cell sap is higher than the water in the soil. The cell sap in the root hair is diluted thus making it less concentrated than the neighbouring cells. Therefore, water moves into the neighboring cells. It is an actively secreted into structure L.
3. Active transport/diffusion