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Lichen are ecologically important as the...

Lichen are ecologically important as they

A

are source of some nedicines

B

are pioneers of succession on barren rocks (Lithosere)

C

are symbionts of algae and fungi

D

are associated with mycorrhizal roots

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The correct Answer is:
B
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Lichens are

[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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TRUEMAN BIOLOGY-KINGDOM FUNGI (KINGDOM MYCOTA)-MULTIPLE CHOICE QUESTIONS
  1. Which is not a lichen?

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  2. Reindeer moss is a lichen used as food by man. This belongs to the gen...

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  3. Lichen are ecologically important as they

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  4. Lichens growing on rocks are called

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  5. In lichens, the nonstalked, noncorticated, detachable powderyn masses ...

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  6. Lichens are

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  7. Aspergillus species are important in industries as they produce

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  8. Primary host of Puccinia graminis triticl causing rust in

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  9. The primary infection in stem rust of wheat is caused by

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  10. Spores helpful for secondary infections in the spread of stem rust of ...

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  11. Sexual stages of Puccinia graminis tritici are confined to

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  12. The inflammation of mucous membrane of throat and mouth (thrush) and v...

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  13. White Rust of Crucifers is due to

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  14. Late blight of Potato is due to

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  15. Rice crop was destroyed by a fungus which resulted in Bengal famine (1...

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  16. A fungus whose extract of sclerotia can be chemically altered to produ...

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  17. The species of Penicillium used in ripening/maturation of cheese other...

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  18. A carcinogen present in the mould Aspergillus flavus which grows in gr...

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  19. Red rot of sugarcane is a serious epiphytotic disease of sugar cane. I...

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  20. Fungi resemble to

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