Is there a vegetable have only one seed?

It's unlikely to find a vegetable with only one seed. Here's why:

* Botany: Most vegetables are fruits, meaning they develop from the ovary of a flowering plant and contain seeds for the plant's reproduction.

* Seed Number: Fruits typically have multiple seeds to increase the chances of successful germination and plant growth.

* Exceptions: There are some exceptions:

* Avocado: Technically a fruit, but often categorized as a vegetable. It typically has a single, large seed.

* Peapods: Pea pods contain multiple peas, which are actually seeds. However, each individual pea can be considered a seed, so while there are many, each pea is technically a single seed.

* Mango: While usually containing multiple seeds, some mango varieties can have a single seed, but it's not typical.

Key Point: It's important to remember that "vegetable" is a culinary term, not a strict botanical classification. So, while we might call some fruits vegetables in the kitchen, their seed structure remains the same.