ECOLOGY
ECOSYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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large oak tree
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lichens
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redwood tree
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maple tree
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Detailed explanation-1: -Lichens are considered as pioneer organisms because there are the first to colonize bare rocks, mountains, and cliffs. They corrode rocks and accumulate a certain amount of minerals and organic matter. The plants like mosses and grasses appear later in succession, utilizing the first soil formed by lichens.
Detailed explanation-2: -The first organisms to appear in areas of primary succession are often mosses or lichens. These organisms are known as pioneer species because they are the first species present; pioneer species must be hardy and strong, just like human pioneers.
Detailed explanation-3: -Common examples of pioneer species include bacteria, lichen, mosses, and fungi. In the ocean they can be phytoplankton, zooplankton, and algae.