Q. Consider the following statements:
1.The gradual and fairly predictable change in the species composition of a given area is called ecological succession.
2.The entire sequence of communities that successively change in each area are called sere(s).
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation: The gradual and predictable change in the species composition of a given area is called ecological succession.

  • During succession some species colonize an area, and their population becomes more numerous whereas populations of other species decline and even disappear.
  • The entire sequence of communities that successively change in each area are called sere(s).

Source: NCERT

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