1. Which
of the following shows coiled RNA strand and capsomers?
A)Poliovirus
B)Tobacco
mosaic virus
C)Measles virus
D)Retrovirus
2.
Viruses have
A) DNA
enclosed in a protein coat
B)prokaryotic nucleus
C)single chromosome
D)both DNA and RNA
3. Archae
bacteria differ from eubacteria in
A)cell
membrane structure
B)mode of nutrition
C)cell shape
D)mode of reproduction
4. The genetic material of a viroid is
A)DNA
B)RNA
C)Protein
D)Carbohydrate
5.The
smallest organisms which are self-reproducing in free-living state are known as
A)bacteria
B)viruses
C)PPLO
D)Prions
6. Which
of the followingly wrongly matched?
A)D J Ivanowski- Microbes smaller than bacteria cause mosaic disease of tobacco
B)W.M Stanely- Crystalloid proteins
C)L Pasteur- Virus means venom or poisonous fluid
D)T.O. Diener- Viroids are found to be a free DNA
7.The
organisms which completely lack a cell wall and can live without oxygen are
A)mycoplasmas
B)archaebacteria
C)methanogens
D)thermoacidophiles
8.
According to five kingdom systems of classification, which group does blue-green
algae belong to?
A)Fungi
B)Monera
C)Plantae
D)Protista
9. Which of the following characters belongs to
the Kingdom Monera?
A)Eukaryotic
B)Heterotrophic
C)Multicellular
D)Presence of cell walls made of
cellulose
10. Five kingdom system of classification
suggested by R H Whittaker is not based on
A)presence or absence of a well-defined nucleus
B)mode
of reproduction
C)mode of nutrition
D)complexity of body organization
Answer:
1.B)Tobacco mosaic virus
2. A) DNA enclosed in a protein coat
3. A)cell membrane structure
4. B)RNA
5. C)PPLO
6. D)T.O. Diener- Viroids are found to be a free DNA
7. A)mycoplasmas
8. B)Monera
9. B)Heterotrophic
10. B)mode of reproduction
