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Read the following statements given about organism formed by association of the phycobiont and mycobiont and identify the true ones.

I. Lichens are mutually beneficial symbiotic associations.

II. They grow extensively in areas with high pollution, hence called as pollution indicators.

III. The phycobiont member, algae, is an autotroph and the mycobiont member, fungi, is a heterotroph.

IV. Fungi helps the algae harvest sunlight for photosynthesis.

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Important Questions on Biological Classification

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Biology>Diversity in The Living World>Biological Classification>Lichen
Which of the following is correct about viroids?
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Biology>Diversity in The Living World>Biological Classification>Lichen
Which of the following statements is incorrect?
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Biology>Diversity in The Living World>Biological Classification>Lichen
Which of the following shows coiled RNA strand and capsomeres?
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Biology>Diversity in The Living World>Biological Classification>Lichen
The proteinaceous infectious particle which can cause some serious animal diseases are called:
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Biology>Diversity in The Living World>Biological Classification>Lichen
A pathogan which cannot be cultured in an artificial medium is:
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Biology>Diversity in The Living World>Biological Classification>Lichen
The capsid of tobacco mosaic virus (TMV) has capsomere numbering ___.
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Biology>Diversity in The Living World>Biological Classification>Lichen
Viruses have
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Biology>Diversity in The Living World>Biological Classification>Lichen
Which one of the following statements is true about viruses?
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Biology>Diversity in The Living World>Biological Classification>Lichen
Which of the following are the most suitable indicators of SO2 pollution in the environment?
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Biology>Diversity in The Living World>Biological Classification>Lichen
What is the genetic material of Ebola virus?
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Biology>Diversity in The Living World>Biological Classification>Lichen
What is the order of events that occur in a bacteriophage lytic cycle?
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Biology>Diversity in The Living World>Biological Classification>Lichen
Which of the following statements is wrong for viroids?
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Biology>Diversity in The Living World>Biological Classification>Lichen

Which of the following statements related to viruses are incorrect?

I. Antibiotics can kill viruses

II. Viruses are inactive outside the cell

III. Genes involved in viral metabolism are located in the viral genome

IV. Phages can multiply by two alternative mechanism, the lytic and the lysogenic cycle

The incorrect combination is:

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Biology>Diversity in The Living World>Biological Classification>Lichen

Identify the parts labelled 1,2,3,4 in the given figure

Question Image

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Biology>Diversity in The Living World>Biological Classification>Lichen
Creutzfeldt Jakob Disease CJD is a transmissible disease caused by a
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Biology>Diversity in The Living World>Biological Classification>Lichen
Leaf extract from an infected plant was passed through a filter with a pore size of 0.05μm diameter. The infectious agent was detected in the filtrate. Which ONE of the following is the likely infectious agent?
HARD
Biology>Diversity in The Living World>Biological Classification>Lichen

Match the following lists:

  List I   List II
A) No sex organs, dikaryotic exogenous spores I) Gonyaulax
B) Infectious agents without nucleic acids II)  Trichodesmium
C) Differentiated cytoplasm bloom in polluted water bodies III) Slime moulds
D) Fruiting bodies bearing spores survive many years IV) Basidiomycetes
    V) Prions

The correct match is

HARD
Biology>Diversity in The Living World>Biological Classification>Lichen
Viroids differ from viruses in having:
EASY
Biology>Diversity in The Living World>Biological Classification>Lichen
Select the wrong statement.
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Biology>Diversity in The Living World>Biological Classification>Lichen
A location with luxuriant growth of lichens on the trees indicates that the: