FORESTRY
ECOLOGY AND ENVIRONMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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primary succession
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secondary succession
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both types of succession
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None of the above
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Detailed explanation-1: -The first species to colonize bare rock are usually lichens. In primary succession, they are thus the pioneer organisms . Before they can colonize an environment, many organisms need soil. Acids that break down the rock and start the process of soil formation are secreted by lichens that colonize bare rock.
Detailed explanation-2: -Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii. As lava flows into the ocean, new rock is formed.
Detailed explanation-3: -Primary succession occurs in an area that has never before been colonized. Generally, the area is nothing but bare rock. This type of environment may come about when lava flows from a volcano and hardens into rock, when a glacier retreats and leaves behind bare rock, or when a landslide uncovers an area of bare rock.