Multiple Choice
What is the primary role of a decomposer in a food chain?
959
views
48. Ecology
Introduction to Ecology
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following scenarios would undergo secondary ecological succession?
A
A new volcanic island forming
B
A glacier retreating and exposing bare rock
C
A forest regrowing after a wildfire
D
A sand dune forming along a coastline
Verified step by step guidance1
Understand the concept of ecological succession: Ecological succession is the process by which the structure of a biological community evolves over time. There are two main types: primary and secondary succession.
Differentiate between primary and secondary succession: Primary succession occurs in lifeless areas where there is no soil, such as after a volcanic eruption or glacier retreat. Secondary succession occurs in areas where a disturbance has happened but soil and some organisms still exist, such as after a wildfire.
Analyze the given scenarios: A new volcanic island forming and a glacier retreating both involve areas without existing soil, indicating primary succession. A sand dune forming is also a primary succession scenario as it involves new land formation.
Identify the scenario that fits secondary succession: A forest regrowing after a wildfire involves an area where soil and some life forms remain, making it a case of secondary succession.
Conclude that the correct scenario for secondary ecological succession is a forest regrowing after a wildfire, as it involves the reestablishment of a community in an area where the ecosystem has been disturbed but not completely destroyed.
Related Videos
Related Practice
Introduction to Ecology practice set
Problem sets built by lead tutorsExpert video explanations