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Ecosystems — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYEcosystems1 Mark
MCQ
The natural process by which different groups or communities colonize the same area over a period of time in a definite sequence is called:
  • A
    Adaptation
  • B
    Variation
  • ✓
    Succession
  • D
    Biological rhythm
✓

Answer

Correct option: C.
Succession
The transition in the species composition of a given area is called ecological succession.
This takes place due to the change in the environmental conditions in a geographical area.
During succession, some species colonise an area and their populations become more numerous, whereas populations of other species decline and even disappear.
The time scale can be decades $($for example, after a wildfire$),$ or even millions of years after a mass extinction.

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