question_answer 24)

  During the process of ecological succession the changes that take place in communities are (a) orderly and sequential                                            (b) random                         (c) very quick                                                                     (d) not influenced by the physical environment

Answer:

                  (a) The gradual and predictable changes in the species composition of a given area iscalled ecological succession. These changes are orderly and sequential. The entire sequencesof communities that successively change in a given area are termed as sere. The other options as random or quick change are not the features of ecological succession. Also the ecological succession is influenced by physical environment thus all the other options are wrong.