I WONDER - Why Are Some Plants Spicy?

Spicy peppers contain a chemical called capsian, which causes pain when consumed. This chemical helps protect the plant from being eaten by animals. Interestingly, humans have developed a taste for spicy foods and incorporate them into various dishes, but the plants remain protected in the wild.

What is the significance of the pain caused by capsian in relation to the plant's survival?

What chemical is responsible for the spiciness in peppers?

How do spicy plants protect themselves from being eaten?

Why have humans developed a taste for spicy foods?

In what ways do spicy plants still remain protected in the wild?