devarshi-dt-logo

Question:

During ecological succession, the following occur:

  1. The changes lead to a community that is in near equilibrium with the environment and is called a pioneer community.
  2. The gradual and predictable change in species composition occurs in a given area.
  3. The establishment of a new biotic community is very fast in its primary phase.
  4. The numbers and types of animals remain constant.

The gradual and predictable change in species composition occurs in a given area.

The changes lead to a community that is in near equilibrium with the environment and is called pioneer community.

The numbers and types of animals remain constant.

The establishment of a new biotic community is very fast in its primary phase.

Solution:

Ecological succession is the gradual and fairly predictable change in the species composition of a given area. During succession, some species colonies area and their population become more numerous, whereas, the population of other species declines and even disappears. Thus, the correct answer is option B.