Which of these is responsible for grittiness of fruits ?

Options

A. Rod cells
B. Stone cells
C. Vessels
D. Star cells

Answer

### Step-by-Step Text Solution:

1. **Understanding the Question**: The question asks which structure is responsible for the grittiness of fruits. This indicates that we are looking for a specific type of cell or tissue that contributes to the texture of certain fruits.

2. **Identifying Key Terms**: The term "grittiness" suggests a texture that is rough or grainy. In botanical terms, this is often associated with certain types of cells that provide structural support.

3. **Exploring Cell Types**: In plants, there are various types of cells, including:
- Parenchyma cells
- Collenchyma cells
- Sclerenchyma cells (which include stone cells or sclerids)
- Vessels

4. **Focusing on Sclerenchyma Cells**: Among these, sclerenchyma cells are known for their thick lignified walls. They provide structural support and are often associated with hardness in plant tissues.

5. **Identifying Stone Cells**: Stone cells, also known as sclerids, are a type of sclerenchyma cell. They are specifically responsible for the gritty texture found in some fruits, such as pears and certain varieties of apples.

6. **Evaluating Options**: Given the options:
- Rod cells
- Stone cells (sclerids)
- Vessels
- Star cells

The correct answer is "stone cells," as they are directly linked to the grittiness of fruits.

7. **Conclusion**: Therefore, the structure responsible for the grittiness of fruits is the stone cells, also known as sclerids.

### Final Answer:
The correct answer is **stone cells (sclerids)**.

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