ECOLOGY
ECOLOGICAL SUCCESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Volcano wipes out ecosystem that gradually grows back from ash covered soil
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Volcano creates a new island of rock that must break down to form an ecosystem
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Forest fire burns down forest that must bounce back over time
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Tornado destroys a crop that must slowly grow back over time.
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Detailed explanation-1: -Primary succession happens when a new patch of land is created or exposed for the first time. This can happen, for example, when lava cools and creates new rocks, or when a glacier retreats and exposes rocks without any soil. During primary succession, organisms must start from scratch.
Detailed explanation-2: -Primary succession occurs when new land is formed or bare rock is exposed to provide lifeless habitat for the organisms for the first time. When the volcano erupts, it forms a small island (composed of rocks) that provides lifeless habitat for the organism (for the first time).
Detailed explanation-3: -What is primary succession? Primary succession is ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).
Detailed explanation-4: -Primary succession and pioneer species Primary succession occurs when new land is formed or rock is exposed; for example, following the eruption of volcanoes, such as those on the Big Island of Hawaii.