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Important Questions on Biological Classification

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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions

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:

EASY
Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
The capsid of tobacco mosaic virus (TMV) has capsomere numbering ___.
HARD
Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
What is the order of events that occur in a bacteriophage lytic cycle?
HARD
Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions

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

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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Viroids differ from viruses in having:
EASY
Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Which one of the following statements is true about viruses?
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
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>Viruses, Viroids and Prions
The concept of "Contagium vivum fluidum" was given by
EASY
Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Which of the following statements is incorrect?
EASY
Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Which of the following is correct about viroids?
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
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?
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Select the wrong statement.
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
The genome of SARS-CoV2 is composed of
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Creutzfeldt Jakob Disease CJD is a transmissible disease caused by a
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Causal organism of the disease cucumber pale fruit is ______.
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Identify the correct statements among the following.
(A) No virus contains both DNA and RNA.
(B) Viroids were named by Pasteur.
(C) Scrapie disease of sheep is caused by proteins.
(D) In the six kingdom classification three domains are present.
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Assertion (A): Bacteriophages have the ability to replicate within bacterial cells.
Reason (R): Bacterial plasmids have very high copy numbers of their genome in the bacterial cells.
The correct option among the following is:
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions

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>Viruses, Viroids and Prions
A pathogan which cannot be cultured in an artificial medium is:
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Biology>Diversity in The Living World>Biological Classification>Viruses, Viroids and Prions
Which of the following statements is wrong for viroids?