Which of the following represents an early stage in primary succession?
A) pine trees
B) moss and lichens on bare rock
C) weedy annual plants in an open field
D) climax species in succession
E) alder, cottonwood, and willow thickets

Question

Quizplus · Accepted Answer

Moss and lichens on bare rock represent the primary colonizers of a barren area in primary succession. They break down the rock and form soil, making it possible for other plants to eventually grow. Pine trees, weedy annual plants, and alder, cottonwood, and willow thickets are all later stages in primary succession. Climax species in succession are the final stage of succession, and their presence indicates a stable, mature ecosystem.

Which of the Following Represents an Early Stage in Primary