Moss invades and establishes itself on bare rock,accumulating the beginnings of soil.After several years,enough soil has become established that grasses begin to grow where there was once bare rock.Without the moss building up soil,the grasses would have had no chance.
-The establishment of the mosses on bare rock and eventual addition of grasses represents
A)a climax ecosystem.
B)primary succession.
C)secondary succession.
D)intermediate succession.

Question

Quizplus · Accepted Answer

This scenario describes primary succession, which is the process of colonization and establishment of plant life in an area that was previously barren or lacking in soil. The bare rock is the starting point, and the mosses are the first pioneering plants to establish themselves and begin building up soil. The later growth of grasses is a sign of further succession and development of the ecosystem over time. This process can eventually lead to the establishment of a climax ecosystem, but the scenario described here is still in the earlier stages of primary succession.

Moss Invades and Establishes Itself on Bare Rock,accumulating the Beginnings