Why are termites called polymorphic insects?

Termites are called polymorphic insects because they exhibit a range of physical forms and castes within their colonies, including workers, soldiers, and reproductive individuals (kings and queens). This Caste System allows them to specialize in different roles, enhancing the colony's efficiency and survival. The distinct physical characteristics of each caste, such as size and functionality, illustrate their adaptability to various ecological niches. This polymorphism is a key factor in the success of termite societies.