Property of adhesion of water molecules to cell walls is due to

Options

A. Hydrogen bonds
B. Dipole nature
C. Ionisation of water
D. All the above.

Answer

To answer the question about the property of adhesion of water molecules to cell walls, we can break down the explanation into clear steps:

### Step-by-Step Solution:

1. **Understanding Adhesion**:
- Adhesion refers to the attraction between different types of molecules. In this context, it is the attraction between water molecules and the molecules that make up the cell wall.

**Hint**: Remember that adhesion is different from cohesion; adhesion involves different substances, while cohesion involves the same substance.

2. **Role of Water Molecules**:
- Water molecules are polar, meaning they have a partial positive charge on one side (due to hydrogen atoms) and a partial negative charge on the other side (due to the oxygen atom). This polarity allows water molecules to interact with other polar substances.

**Hint**: Consider how the structure of water contributes to its properties.

3. **Cell Wall Composition**:
- The cell wall is primarily made up of cellulose, which contains polar groups, particularly the electronegative oxygen atoms. These polar groups can interact with the polar water molecules.

**Hint**: Think about what components of the cell wall can attract water molecules.

4. **Hydrogen Bonding**:
- The primary reason for the adhesion of water molecules to the cell wall is hydrogen bonding. Water molecules can form hydrogen bonds with the electronegative oxygen atoms in the cellulose of the cell wall. This bond occurs because the positive hydrogen atoms are attracted to the negative oxygen atoms.

**Hint**: Recall that hydrogen bonds are a type of weak bond that occurs between a hydrogen atom and an electronegative atom.

5. **Conclusion**:
- While the dipole nature of water and its ionization are important properties of water, they are not the direct cause of adhesion to the cell wall. The specific interaction that leads to adhesion is due to hydrogen bonding.

**Hint**: Focus on the specific type of interaction that leads to adhesion, which is hydrogen bonding.

### Final Answer:
The property of adhesion of water molecules to cell walls is primarily due to **hydrogen bonds**.