Question

The organism which invade a bare area to initiate an ecological succession are known as

• A. Endemic species
• B. Pioneer species
• C. Key stone species
• D. Climatic species

Answer 1

Answer: (B)

The organisms which invade a bare area to initiate an ecological succession are called pioneer species.
Those species that have a large impact over its environment compared to its abundance are called keystone species. Without the members of this keystone species, the ecosystem would either cease to exist or would become very different. Species that are limited or confined to a particular region and nowhere else in the world are called endemic species.