Final answer:
The two types of ecological niche are fundamental niche and realized niche.
Step-by-step explanation:
The two types of ecological niche are fundamental niche and realized niche. The fundamental niche refers to the full range of environmental conditions and resources in which a species can survive and reproduce. It encompasses all the potential roles and interactions a species could have in its ecosystem.
On the other hand, the realized niche is the subset of the fundamental niche that a species actually occupies due to interactions with other species in the ecosystem. It is determined by factors such as competition, predation, and resource availability.