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%