New species entering a geographical region are called exotic or alien or non-native species.
The species confined to a particular region and not found elsewhere is termed as endemic.
Keystone species are the one that drive major ecosystem functions.
NEET UG 2015 — Zoology Organisms and Populations
The species confined to a particular region and not found elsewhere termed as:
Held on 30 Apr 2015 · Verified 9 Jul 2026.
Alien
Endemic
Rare
Keystone
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