Question

in examining figure 36.12, what type of bonding is responsible for the cohesion of water molecules to one another and the adhesion of water molecules to the cell wall in xylem?
a none of the above
b covalent bonding
c ionic bonding
d hydrogen bonding

Explanation:

Hydrogen bonding occurs between the slightly positive hydrogen atoms and slightly negative oxygen atoms of water molecules, which accounts for water - water cohesion. In xylem, hydrogen bonding also allows water molecules to adhere to the cell - wall surfaces. Covalent bonding is within a water molecule (between H and O), not for cohesion/adhesion here. Ionic bonding involves the transfer of electrons and is not relevant to this water - related cohesion and adhesion.

Answer:

D. hydrogen bonding