WorksheetsEcological Succession- DOL
Total questions: 6
Worksheet time: 3mins
A glacier retreats, exposing a previously ice-covered landscape. What events and processes are likely to occur during the early stages of primary succession?
Select TWO that apply.
A. Lichens and mosses colonize the bare rock surfaces.
B) Large trees quickly become dominant.
C) Small grasses establish in the glacial till.
D) Climax community is established within a few years.
During primary succession, which of the following is the correct sequence of events?
A.
Mosses → Shrubs → Grasses → Trees
B.
Lichens → Mosses → Grasses → Shrubs
C.
Shrubs → Trees → Mosses → Lichens
D.
Grasses → Trees → Lichens → Mosses
During ecological succession, how does the growth of young hardwoods affect the organisms living in an ecosystem?
A. Grasses and low shrubs are unable to obtain the amount of light they need to survive, so there are small numbers of them.
B. The trees provide shelter and food for a variety of mammals, insects, and birds.
C. In autumn, falling leaves provide a source of energy for decomposers such as fungi.
D. All of the previous answers ( A, B, & C)
What role do pioneer species play in the process of ecological succession?
D. They prevent other species from establishing in the area.
A. They modify the environment, making it more suitable for other species to colonize.
B. They are the final stage of succession, providing stability to the ecosystem.
C. They compete with climax species for resources.
Which of the following best describes the climax community in an ecological succession?
A. A community that is constantly changing and evolving.
B. A stable and mature community with little change in species composition.
C. A community dominated by pioneer species.
D. A community that is in the early stages of succession.
How does secondary succession differ from primary succession?
D. Secondary succession does not involve pioneer species.
C. Secondary succession takes longer to reach a climax community than primary succession.
B. Secondary succession begins on soil, whereas primary succession begins on bare rock.
A. Secondary succession occurs in an area where no life has existed before.
