The plant tissues commonly found in fruit walls of nuts and pulp of some fruits like guava are termed as
Or
pear fruits are gritty due to the presence of
Or
Tissue composed of non-parenchymatous cells and have isodiametric or irrengular shape is called

Options

A. Fibers
B. Sclereids
C. Tracheids
D. Vessels

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the type of plant tissue found in the fruit walls of nuts and the pulp of fruits like guava. It also inquires about the gritty texture of pear fruits and the tissue composed of non-parenchymatous cells with isodiametric or irregular shapes.

2. **Identifying the Tissue Type**: The plant tissue commonly found in the fruit walls of nuts and the pulp of certain fruits like guava is known as **sclerites**. Sclerites are a type of sclerenchyma tissue.

3. **Explaining Sclerites**: Sclerites are non-living cells that provide structural support. They can have various shapes, but they are typically characterized by their thickened cell walls.

4. **Grittiness in Pear Fruits**: The gritty texture in pear fruits is due to the presence of specific types of sclerites known as **brachysclerides** or stone cells. These cells contribute to the texture of the fruit.

5. **Characteristics of Sclerites**: Sclerites are composed of non-parenchymatous cells and can have isodiametric (equal diameter) or irregular shapes. This makes them distinct from other types of plant cells.

6. **Conclusion**: Therefore, the answers to the questions are:
- The plant tissues commonly found in fruit walls of nuts and pulp of some fruits like guava are termed **sclerites**.
- Pear fruits are gritty due to the presence of **sclerites**.
- The tissue composed of non-parenchymatous cells with isodiametric or irregular shape is called **sclerites**.