The species confined to a particular region and not found elsewhere is termed as

(1) keystone

(2) alien

(3) endemic

(4) rare

(3) The species confined to a particular region and not found elsewhere is termed as endemic. 

Their conservation requires peculiar specific efforts due to their unavailability in other parts of world.

Difficulty Level:

  • 14%
  • 8%
  • 71%
  • 9%