Question

In autogenic succession

• A. Early and continued dominance of autotrophic organism takes place like green plants.
• B. Replacement of existing communities cause largely by any other extremal condition.
• C. Early dominance of heterotrophs takes place such as bacteria, fungi and other animals.
• D. Community itself modifies its own environment thus, causing its own replacement by new communities.
• E. Starts with previously built up substrata with already existing matter.

Answer 1

Answer: (D)

Community itself modifies its own environment thus, causing its own replacement by new communities.

"Auto-" meaning self or same, and "-genic" meaning producing or causing. Therefore, Autogenic succession refers to ecological succession driven by biotic factors within an ecosystem, which consequently brings changes in the environment. For example, the plants themselves cause succession to occur, leading to a gradual ecological change in a particular spot of land, known as a progression of inhabiting species.

So, the correct answer is 'D'.