The species of plants that plays a vital role in controlling the relative abundance of other species in a community is called _____.

A keystone species is a species that plays a crucial role in maintaining the balance and structure of an ecosystem. It has a disproportionately large effect on the community, relative to its abundance. The removal of a keystone species can lead to significant changes in the ecosystem, potentially causing the decline or loss of other species.
The keystone species controls the relative abundance of other species in a community. By influencing the availability of resources or through other ecological interactions, the keystone species helps regulate the populations of other species, contributing to the overall stability and functioning of the ecosystem.
(1) Alien species, also known as invasive species, are non-native species that have been introduced to an ecosystem.
(2) Endemic species are species that are native or restricted to a specific geographic region and are not found elsewhere.
(3) Exotic species is another term for alien or non-native species.