Multiple Choice
Why are decomposers important in an ecosystem?
684
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 answer choice shows the correct order of primary succession after a volcanic eruption?
A
Grasses, bare rock, shrubs, trees, lichens, mosses
B
Lichens, bare rock, grasses, shrubs, trees, mosses
C
Bare rock, trees, shrubs, grasses, mosses, lichens
D
Bare rock, lichens, mosses, grasses, shrubs, trees
Verified step by step guidance1
Understand that primary succession is the process of life colonizing an area that was previously uninhabited, such as after a volcanic eruption.
Recognize that the process begins with bare rock, as volcanic eruptions create new land surfaces devoid of soil.
Identify that lichens are typically the first organisms to colonize bare rock. They are pioneer species that can survive in harsh conditions and contribute to soil formation by breaking down the rock.
Acknowledge that as lichens break down the rock and organic material accumulates, mosses can begin to grow, further contributing to soil development.
Realize that once a thin layer of soil is established, grasses can grow, followed by shrubs and eventually trees, completing the succession process.
Related Videos
Related Practice
Introduction to Ecology practice set
Problem sets built by lead tutorsExpert video explanations