Advertisements
Advertisements
Question
How do organisms contribute in the formation of soil?
Advertisements
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
What are the methods of preventing or reducing soil erosion?
Write a note on how forests influence the quality of our air, soil and water resources.
What is weathering? Elucidate in the various types of weathering.
Mention briefly the role of decomposers of cycling of materials.
Which of the following is not a greenhouse gas?
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.
Lichens are called pioneer colonisers of bare rock. How can they help in the formation of soil?
“Soil is formed by water.” If you agree to this statement then give reasons
Why step farming is common in hills?
