Question

During the process of ecological succession, the changes takes place in the communities are
A. Orderly and sequential
B. Random
C. Very Quick
D. Not influenced by the physical environment

Answer 1

Ecological succession is the process of change over time in an ecological community's species structure. The time scale may be decades (for instance, after a wildfire), or even millions of years after a mass extinction.

Complete Answer:
- The group starts with relatively few revolutionary plants and animals and grows as a climax population by growing complexity until it becomes stable or self-perpetuating. The effect of existing species on their own ecosystems is the "driver" of succession, the cause of ecosystem change.
- The sometimes subtle and sometimes overt altering of one's own environment is a consequence of living. It is a phenomenon or process by which, following a disturbance or the initial colonisation of a new habitat, an ecological environment undergoes more or less orderly and predictable changes.
- Succession may be caused either by the development of a new, unoccupied ecosystem, such as a lava flow or a significant landslide or by some sort of community disruption, such as fire, heavy wind or logging.
- Succession that starts in new ecosystems is called primary succession, uninfluenced by pre-existing cultures, whereas succession that follows the disturbance of a pre-existing culture is called secondary succession.

So the answer is ‘Orderly and sequential’.

Note: One of the first hypotheses advanced in ecology was succession. Ecological succession was first recorded and remains at the centre of much ecological research in the Indiana Dunes of Northwest Indiana.