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Lichens are called pioneer colonisers of...

Lichens are called pioneer colonisers of bare rock. How can they help in formation of soil?

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### Step-by-Step Solution: 1. **Understanding Lichens**: Lichens are a symbiotic association between fungi and algae. This means they consist of two different organisms that live together and benefit from each other. 2. **Pioneer Colonizers**: Lichens are referred to as pioneer colonizers because they are often the first organisms to colonize bare and inhospitable environments, such as bare rock surfaces. 3. **Growth on Rock Surfaces**: When lichens grow on bare rock, they begin to establish themselves by adhering to the rock surface. ...
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[A] : Lichens are of considerable ecological imporance as pioneers in colonization of rocky habitats by plants . [R] : The lichens excrete organic acids which disintegrate rocks , thus forming soil or substrata in which other kinds of plants become established .

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Read the following five statements (A to E) and select the option with all correct statement (A) Mosses and Lichens are the first organisms to colonise a bare rock. (B) Seloginella is a homopourous pteridophyte. (C) Coralloid roots in Cycas have VAM. (D) Main plant body in bryophytes is gametophytic whereas in pteridophytes it is sporophytic. (E) In Gymnoperms, male and female gametophytes are present within sporangla located on sporophyte.

NCERT EXEMPLAR ENGLISH-NATURAL RESOURCES -Short Answer Type Questions
  1. Rivers from land, add minerals to sea water. Discuss how ?

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  2. How can we prevent the loss of top soil?

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  3. How is the life of organisms living in water affected when water gets ...

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  4. During summer, if you go near the lake, you feel relief from the heat,...

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  5. In coastal area, wind current moves from the sea towards the land duri...

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  6. Following are a few organisms Which among the above can grow on stone...

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  7. Soil formation is done by both abiotic factors. List the names of thes...

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  8. All the living organisms are basically made up of C,N,S,P,H and O, . H...

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  9. Why does the percentage of gases like oxygen, nitrogen and carbon diox...

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  10. Why does moon have very cold and very hot temperature variations e.g.,...

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  11. Why do people love to fly kites near the seashore ?

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  12. Why does Mathura refinery pose problems to the Taj Mahal?

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  13. Why do not lichens occur in Delhi whereas they commonly grown in Manal...

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  14. Why does water need conservation even though large oceans surround the...

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  15. There is mass mortality of fishes in a pond. What may be the reasons?

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  16. Lichens are called pioneer colonisers of bare rock. How can they help ...

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  17. Soil is formed by water'. If you agree to this statements then give re...

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  18. Fertile soil has lots of humus. Why?

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  19. Why step farming is common in hills?

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