None of pericarp layers is edible in case of

Options

A. Almond
B. Zizyphus
C. Grape
D. Banana

Answer

To solve the question, "None of the pericarp layers is edible in case of," we need to analyze the options provided: almond, ziziphus, grape, and banana.

### Step-by-Step Solution:

1. **Understanding Pericarp Layers**:
- The pericarp is the part of a fruit formed from the ovary wall after flowering. It consists of three layers: the exocarp (outer layer), mesocarp (middle layer), and endocarp (inner layer).

2. **Analyzing Each Option**:
- **Almond**:
- The almond is classified as a drupe. In drupes, the exocarp is usually a thin skin, the mesocarp is fleshy or leathery, and the endocarp is hard and stony. In the case of almonds, the exocarp and mesocarp are not edible, and the endocarp is stony. Therefore, none of the pericarp layers are edible.

- **Ziziphus**:
- Ziziphus (also known as jujube) has an edible exocarp and mesocarp. The endocarp is hard, but since the outer layers are edible, it does not fit the criteria.

- **Grape**:
- Grapes have an edible exocarp and mesocarp. The endocarp is also edible in some varieties. Thus, grapes do not meet the criteria.

- **Banana**:
- In bananas, the exocarp and mesocarp are fleshy and edible. The endocarp is also soft and edible, so bananas do not fit the criteria either.

3. **Conclusion**:
- After analyzing all the options, the only fruit where none of the pericarp layers is edible is the **almond**. Therefore, the correct answer is **option 1: almond**.

### Final Answer:
**The correct answer is almond, as none of the pericarp layers is edible in this case.**