In a particular case of secondary succession, three species of wild grass all invaded a field. By the second season, a single species dominated the field. A possible factor in this secondary succession was
A)equilibrium.
B)facilitation.
C)immigration.
D)inhibition.
E)mutualism.

Question

Quizplus · Accepted Answer

Inhibition is the most plausible factor in this case. In secondary succession, the soil already has some nutrients and there may also be some existing plant species. The presence of the first wave of wild grasses, followed by the dominance of a single species, suggests that later species were inhibited from growing by the growth of the first wave of grasses. This is common in plant successions and is known as the inhibition hypothesis.

In a Particular Case of Secondary Succession, Three Species of Wild