A fruit having differentiation of epicarp, mesocarp and stony endocarp is

Options

A. Berry
B. Drupe
C. Sycosis
D. sorosis

Answer

To solve the question "A fruit having differentiation of epicarp, mesocarp and stony endocarp is," we can follow these steps:

### Step 1: Understand the Structure of Fruits
Fruits can be classified based on their structure. The three main layers of a fruit are:
- **Epicarp**: The outermost layer.
- **Mesocarp**: The middle fleshy layer.
- **Endocarp**: The innermost layer, which can be stony or fleshy.

### Step 2: Analyze the Options
The options given are:
- A) Berry
- B) Drupe
- C) Psychosis
- D) Psorosis

### Step 3: Identify the Correct Fruit Type
Among the options:
- **Berry**: Typically has a fleshy pericarp with no differentiation into stony endocarp.
- **Drupe**: Characterized by having a hard, stony endocarp (the pit), a fleshy mesocarp, and an outer layer (epicarp).
- **Psychosis** and **Psorosis**: These are not standard classifications for fruits.

### Step 4: Conclusion
Based on the definitions and characteristics, the fruit that has a differentiation of epicarp, mesocarp, and a stony endocarp is a **Drupe**.

### Final Answer
The correct answer is **B) Drupe**.

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