HARD
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In majority of lichens, there is association of
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Important Questions on Biological Classification
HARD
What is the order of events that occur in a bacteriophage lytic cycle?
EASY
Identify the parts labelled in the given figure
EASY
The proteinaceous infectious particle which can cause some serious animal diseases are called:
EASY
Which one of the following statements is true about viruses?
HARD
Viroids differ from viruses in having:
EASY
Creutzfeldt Jakob Disease is a transmissible disease caused by a
EASY
The capsid of tobacco mosaic virus (TMV) has capsomere numbering ___.
MEDIUM
A pathogan which cannot be cultured in an artificial medium is:
EASY
Which of the following statements is incorrect?
EASY
A location with luxuriant growth of lichens on the trees indicates that the:
HARD
Match the following lists:
| List | List | ||
| A) | No sex organs, dikaryotic exogenous spores | Gonyaulax | |
| B) | Infectious agents without nucleic acids | Trichodesmium | |
| C) | Differentiated cytoplasm bloom in polluted water bodies | Slime moulds | |
| D) | Fruiting bodies bearing spores survive many years | Basidiomycetes | |
| Prions |
The correct match is
EASY
Select the wrong statement.
EASY
Leaf extract from an infected plant was passed through a filter with a pore size of diameter. The infectious agent was detected in the filtrate. Which ONE of the following is the likely infectious agent?
MEDIUM
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
The genome of is composed of
MEDIUM
What is the genetic material of Ebola virus?
EASY
Which of the following is correct about viroids?
EASY
Which of the following are the most suitable indicators of pollution in the environment?
EASY
Which of the following statements is wrong for viroids?
