in betula the bark is

Options

A. ring bark used writing
B. scaly bark used for writing
C. ring bark used as a masticatory
D. ring bark used as a spice

Answer

### Step-by-Step Solution:

1. **Understanding Bark**:
- The bark of a tree refers to all the tissues outside the vascular cambium. This includes the outer protective layers of the tree.

2. **Identifying the Type of Bark in Betula**:
- In Betula (birch trees), the type of bark present is known as "ring bark." This bark is characterized by its structure, which consists of concentric successive periderm layers.

3. **Characteristics of Ring Bark**:
- Ring bark appears in the form of sheaths and is smooth and cylindrical due to the tight arrangement of the concentric layers.

4. **Comparison with Scaly Bark**:
- Scaly bark, in contrast, develops overlapping scales and is not smooth. This distinction is important to understand the specific type of bark found in Betula.

5. **Uses of Ring Bark**:
- The ring bark of Betula has historical significance as it was used in ancient India for writing. Specifically, it was used to create paper for writing lengthy scriptures, including texts in Sanskrit.

6. **Evaluating the Options**:
- The question provides four options regarding the nature and use of the bark in Betula:
- **Option 1**: Ring bark used for writing (Correct)
- **Option 2**: Scaly bark used for writing (Incorrect)
- **Option 3**: Ring bark used as masticatory (Incorrect)
- **Option 4**: Ring bark used as spice (Incorrect)

7. **Conclusion**:
- The only correct option is the first one, which states that the ring bark is used for writing.