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Lichens are...

Lichens are

A

commensal

B

dual/composite organism

C

saprophyte

D

all the above

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The correct Answer is:
B
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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 .

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) Selaginella is a homospourous 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 sporangia located on sporophyte.

Lichen are ecologically important as they

Lichen are composite organisms consisting of an alga and

Lichens serves as pollution indicator.

Lichens have an actual relationship of

Lichen is a symbiotic association of

Lichens growing on rocks are called

Lichens have symbiotic relationship between (A) algae and bacteria (B) algae and fungus (C) bacteria and fungus (D) fern and bacteria

Lichens have symbiotic relationship between (A) algae and bacteria (B) algae and fungus (C) bacteria and fungus (D) fern and bacteria

TRUEMAN BIOLOGY-KINGDOM FUNGI (KINGDOM MYCOTA)-MULTIPLE CHOICE QUESTIONS
  1. Lichens growing on rocks are called

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

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  3. Lichens are

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  4. Aspergillus species are important in industries as they produce

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  5. Primary host of Puccinia graminis triticl causing rust in

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

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

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  8. Sexual stages of Puccinia graminis tritici are confined to

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

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  10. White Rust of Crucifers is due to

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  11. Late blight of Potato is due to

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

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

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

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

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

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  17. Fungi resemble to

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  18. Sexual reproduction in fungi in which flagel-lated gametes differentia...

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  19. Fusion between two morphologically similar but physiologically and gen...

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  20. A unicellular fungus is

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