Question

What is represented by the following sequence?

Cyanobacteria, Crustose lichens, Foliose lichens, Mosses, Shrub, Dicotyledenous plants.

• A. Genetic drift
• B. Eltonian pyramid
• C. Ecological succesion
• D. Phylogenetic relationship

Answer 1

The correct option is C Ecological succesion

Ecological succession is the process of change in the species structure of an ecological community over time. The time scale can be decades (for example, after a wildfire), or even millions of years after a mass extinction. Cyanobacteria- crustose lichens- foliose lichens - mosses - shrub - dicotyledonous plant is an example of xerarch succession. A xerarch succession of ecological communities originated in an extremely dry situation such as sand deserts, sand dunes, salt deserts, rock deserts etc.

Therefore, the correct answer is option C.