Question

The rate of secondary succession is faster than primary succession because.

• A. Soil or sediment is already present
• B. Water is available in large quantity
• C. Climax community is already present
• D. pH of soil is favourable

Answer 1

The correct option is A Soil or sediment is already present

Secondary succession is one of the two types ecological succession of a plants life. As opposed to the first, primary succession, secondary succession is a process started by an event (e.g. forest fire, harvesting, hurricane, etc.) that reduces an already established ecosystem (e.g. a forest or a wheat field) to a smaller population of species, and as such secondary succession occurs on preexisting soil whereas primary succession usually occurs in a place lacking soil. Many factors can affect secondary succession, such as trophic interaction, initial composition, and competition-colonization trade-offs. It is usually faster than primary succession as the soil is already present.

So the correct option is 'soil or sediment is already present'.