Question

During the process of ecological succession the changes that take place in communities are

• A. Very quick
• B. Orderly and sequential
• C. Random
• D. Not influenced by the physical environment

Answer 1

The correct option is B Orderly and sequential

Ecological succession
Ecological succession is a gradual process that involves a sequential change in the composition of species leading to the establishment of a stable community.

Changes in ecological succession
The changes that take place in communities or conditions during the process of ecological succession are orderly and sequential. For example, in hydrarch succession, the first organisms to invade are phytoplanktons which are then replaced with rooted-submerged plants followed by free-floating plants, then reed swamp, marsh-meadow, scrub and finally the forest.