Stony endocarp is present in:
(a) Berry - Tomato
(b) Drupe - Mango
(c) Pod - Groundnut
(d) Pome - coconut

Options

A. Berry - Tomato
B. Drupe - Mango
C. Pod - Groundnut
D. Pome - coconut

Answer

To determine which option contains a stony endocarp, we need to understand the characteristics of the different types of fruits mentioned in the question.

### Step-by-Step Solution:

1. **Understanding Stony Endocarp**:
- A stony endocarp is a hard, stone-like layer that surrounds the seed. This is characteristic of a type of fruit known as a drupe.

2. **Identifying the Types of Fruits**:
- **Berry**: A berry is a type of fruit that typically has a soft pericarp (the outer layer of the fruit). Example: Tomato.
- **Drupe**: A drupe has a fleshy outer layer (exocarp and mesocarp) and a hard, stony endocarp that surrounds the seed. Example: Mango.
- **Pod**: A pod is a type of fruit that usually contains multiple seeds and does not have a stony endocarp. Example: Groundnut.
- **Pome**: A pome is a fruit with a core containing seeds, surrounded by a fleshy layer. Example: Coconut.

3. **Analyzing Each Option**:
- **Option (a) Berry - Tomato**: Tomatoes are berries with a soft endocarp. **Not a stony endocarp**.
- **Option (b) Drupe - Mango**: Mangoes are drupes, which have a stony endocarp. **This is a stony endocarp**.
- **Option (c) Pod - Groundnut**: Groundnuts are pods and do not have a stony endocarp. **Not a stony endocarp**.
- **Option (d) Pome - Coconut**: Coconuts are drupes, but they are not typically referred to as pomes. However, they do have a fibrous mesocarp and a hard endocarp. **Not the best example of a stony endocarp**.

4. **Conclusion**:
- The only option that clearly has a stony endocarp is **(b) Drupe - Mango**.

### Final Answer:
(b) Drupe - Mango