Advertisements
Advertisements
Question
How do organisms contribute in the formation of soil?
Solution
Organisms help in soil formation by taking part in the process of weathering. Lichens and bryophytes are involved in biological weathering. Lichens grow on the surface of rocks, creating small cervices by extracting minerals from them. Soil builds up in the thin layer of cervices. Mosses grow on these cervices and deepen the cervices, thereby building up more soil inside them. Cervices get more deepened and form cracks, which become wider and deeper when the roots of the herbs enter them.
APPEARS IN
RELATED QUESTIONS
How is soil formed?
What are the methods of preventing or reducing soil erosion?
What is soil erosion? Explain means of preventing it.
Mention briefly the role of decomposers of cycling of materials.
Top-soil contains the following
A major source of minerals in the soil is the
Following are a few organisms
(a) lichen (b) mosses (c) mango tree (d) cactus Which among the above can grow on stones; and also help in the formation of soil? Write the mode of their action for making soil.
Soil formation is done by both abiotic and biotic factors. List the names of these factors by classifying them as abiotic and biotic?
Explain the role of the Sun in the formation of soil.
Carbon dioxide is necessary for plants. Why do we consider it a pollutant?
