(A)____ is impervious to water due to (B)____ deposition in cell wall

Answer

To solve the question, we need to identify what A and B represent in the context of the statement: "(A)____ is impervious to water due to (B)____ deposition in cell wall."

### Step-by-Step Solution:

1. **Identify A**:
- The term "impervious to water" indicates a structure that does not allow water to pass through. In plants, the cork cambium (also known as phellogen) is a type of lateral meristem that produces cork cells. These cork cells are known for their water-resistant properties.
- Therefore, A is **cork cambium**.

2. **Identify B**:
- The cork cells produced by the cork cambium have cell walls that are modified to be water-resistant. This is primarily due to the deposition of a specific substance in their cell walls.
- The substance responsible for this impermeability is **suberin**, which is a waxy substance that makes the cell walls of cork cells hydrophobic (water-repelling).
- Therefore, B is **suberin**.

3. **Final Answer**:
- A is **cork cambium** and B is **suberin**.

### Complete Statement:
"(A) cork cambium is impervious to water due to (B) suberin deposition in cell wall."

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