Question

Flg can maintain community structure during food scarcity in tropical deciduous forest these are act as:

• A. Exotic species
• B. Pioneer species
• C. Edge species
• D. Key stone species

Answer 1

The correct option is D Key stone species

Species are the group of interbreeding individuals, there are various types of species.

• Exotic species - They are those species which are moved by humans from one place to another or are accidentally carried away. They are also termed as alien or invasive species.
  
• Pioneer species - They are the first ones to be present in the succession and are hard algae or moss. They provide stability to the ecosystem.
• Edge species - They are the species of their own kind, if they got extinct then they cannot be replaced by any other species. EDGE refers to Evolutionarily Distinct and Globally Endangered species.
• Keystone species - They are species that have the main role in the maintenance of an ecosystem, they support the community structure and ecosystem even at the time of food scarcity. If they are not present then it will lead to the destruction of an ecosystem.

So, the correct option is 'Keystone species'.