Q.1
Which of the following is correct about viroids? [NEET 2020]
  • a) They have DNA with protein coat
  • b) They have free DNA without protein coat
  • c) They have RNA with protein coat
  • d) They have free RNA without protein coat
Q.2
Which of the following statements is incorrect? [NEET 2019]
  • a) Viroids lack a protein coat.
  • b) Viruses are obligate parasites.
  • c) Infective constituent in viruses is the protein coat.
  • d) Prions consist of abnormally folded proteins.
Q.3
Which among the following is not a prokaryote ?[NEET 2018]
  • a) Nostoc
  • b) Mycobacterium
  • c) Saccharomyces
  • d) Oscillatoria
Q.4
Match the following diseases with the causative organism and select the correct option. [NEET 2020]
Column-I Column-II
(a) Typhoid (i) Wuchereria
(b) Pneumonia (ii) Plasmodium
(c) Filariasis (iii) Salmonella
(d) Malaria (iv) Haemophilus
  • a) a → ii; b → i; c → iii; d → iv;
  • b) a → iv; b → i; c → ii; d → iii;
  • c) a → i; b → iii; c → ii; d → iv;
  • d) a → iii; b → iv; c → i; d → ii;
Q.5
Prokaryotic flagellum consists of … .. [ AFMC 2004]
  • a) Fiber enclosed by protein membrane
  • b) Fiber enclosed by unit membrane
  • c) Helically arranged protein molecules
  • d) Membrane enclosed 9+2 microtubular
Q.6
Hans Ris coined the term genophore for … [ MPPMT 2007]
  • a) Genetic material of virus
  • b) Genetic material of fungus
  • c) Bacterial chromosome
  • d) Stalk supporting spores
Q.7
Nitrogen fixing organism which can be free as well as symbiotic is … … [ BHU 1990]
  • a) Anabaena
  • b) Azotobacter
  • c) Liverworts
  • d) Mosses
Q.8
Smallest organisms, self reproducing in the living state are … [ BHU 2012]
  • a) Bacteria
  • b) PPLO
  • c) Prions
  • d) Viruses
Q.9
Genetic material of retroviruses is … .. [ MPPMT 2007]
  • a) DNA
  • b) RNA
  • c) DNA and RNA
  • d) Nucleoprotein complexes
Q.10
Milk bacterium is … [MPPMT 2011]
  • a) Acetobacter
  • b) Diplococcus
  • c) Lactobacillus
  • d) Strptobacillus
Q.11
System of classification that employs numerical data to evaluate similarities and differences is known as… [ [ HPPMT 2007]
  • a) Cytotaxonomy
  • b) Biosystematics
  • c) Phenetics
  • d) Chemotaxonomy
Q.12
Kingdom monera includes …[ AMU 2001]
  • a) Prokaryotes only
  • b) Eukaryotes only
  • c) Both a and b
  • d) Mesokaryotes only
Q.13
Potato leaf roll or leaf curl of Papaya are caused by … .. [ MPPMT 2002]
  • a) Fungi
  • b) Viruses
  • c) Bacteria
  • d) Nematodes
Q.14
System of classificationused by Linnaeus was … .. [ MPPMT 1996]
  • a) Natural system
  • b) Artificial system
  • c) Phylogenetic system
  • d) Experimental taxonomy
Q.15
Blue-green algae are …
  • a) Eubacteria
  • b) Cyanobacteria
  • c) Actinomycetes
  • d) Archaebacteria
Q.16
Type of genetic material found in bacteria is … [ BHU 2002]
  • a) RNA bound to protein
  • b) DNA bound to protein
  • c) DNA not bound to protein
  • d) RNA not bound to protein
Q.17
Halophiles grow in concentrated salt solution due to … .. [ JIPMER 1999]
  • a) Bacteriorhodopsin
  • b) Branched hydrocarbon chain phospholipids
  • c) Active absorption
  • d) Accumulation of KCl
Q.18
Shape of cocci bacteria is … [ AMU 2012]
  • a) Rod-shaped
  • b) Comma-shaped
  • c) Spiral
  • d) Spherical
Q.19
A scientist having made significant contribution in the field of classification is …..[CPMT 1990]
  • a) Pasteur
  • b) Oparin
  • c) Darwin
  • d) Linnaeus
Q.20
Which structure are found in mycoplasmas, spirochaetae and rickettsias … [ MPPMT 2011]
  • a) DNA
  • b) RNA
  • c) Ribosomes
  • d) All the above
Q.21
Huxley’s New system is also called … .. [ kerala 2008]
  • a) Chemotaxonomy
  • b) Numerical taxonomy
  • c) Biosystematics
  • d) Phenetics
Q.22
R-gene present on plasmid is meant for … [ AMU 2001]
  • a) Drug resistance
  • b) Nitrogen fixation
  • c) Locomotion
  • d) Exchange of genetic material
Q.23
Virus with nucleic acid but without protein coat is … .. [ DPMT 2003]
  • a) Virion
  • b) Viroid
  • c) Capsid
  • d) Prion
Q.24
Sexual reproduction in eubacteria takes place by …[ ASMC 2012]
  • a) Transformation
  • b) Transduction
  • c) Conjugation
  • d) All the above
Q.25
The smallest organisms which cause diseases among plants are … [ MPPMT 1995]
  • a) Viruses
  • b) Fungi
  • c) Bacteria
  • d) Mycoplasma
Q.26
Where from are most antibiotic extracted …. [ AFMC 2003]
  • a) Algae
  • b) Fungi
  • c) Bacteria
  • d) Plants
Q.27
Maximum number of antibiotics got from any group is .,…. .. [ AIIMS 1997]
  • a) Actinomycetes
  • b) Fungi
  • c) Eubacteria
  • d) Viruses
Q.28
Maximum nutritional diversity is found in … [ CBSE 2012]
  • a) Fungi
  • b) Monera
  • c) plantae
  • d) Animalia
Q.29
Which is wall-less and smallest living cell …[ HPPMT 2012]
  • a) Algae
  • b) Bacteriophage
  • c) Cyanobacteria
  • d) Mycoplasma
Q.30
Metachromatic granules are … .. [ DPMT 2011]
  • a) Chromatophores in skin
  • b) Products of insect metamorphosis
  • c) Inclusion bodies in bacteria
  • d) Found in metaphase
Q.31
Phylogenetic system of classification is based on … .. [ CBSE 2009]
  • a) Morphological features
  • b) Chemical constituents
  • c) Evolutionary relationships
  • d) Floral characters
Q.32
Cyanobacteria/Nostoc is … .. [ CBSE 2001]
  • a) Oxygenic with nitrogenase
  • b) Oxygenic without nitrogenase
  • c) Non-oxygenic with nitrogenase
  • d) Non-oxygenic without nitrogenase
Q.33
Genetic material of virus is … ..
  • a) DNA
  • b) RNA
  • c) DNA or RNA but not both
  • d) None of the above
Q.34
Archaebacteria live in harsh habitat like … [ HPPMT 2011]
  • a) Extreme salty area
  • b) Hot springs
  • c) Marshy areas
  • d) All the above
Q.35
HIV is a retrovirus because its genetic information is carried in … .. [ DPMT 2009]
  • a) DNA instead of RNA
  • b)DNA
  • c) RNA instead of DNA
  • d) Protein coat
Q.36
What is the disease Tetanus also known as … [ BHU 2005]
  • a) Gangrene
  • b) Shingles
  • c) Lockjaw
  • d) Whooping cough
Q.37
Hydrogen donor in photosynthesis of purple sulphur bacteria is … .. [ MPPMT 1990]
  • a) H2S
  • b) H2O
  • c) NH3
  • d) H2SO3
Q.38
isms called methanogens are most abundant in … gneetStudy Companion For more NEET and AIIMS mcq on BIOLOGICAL CLASSIFICATION( Viruses, Viroids, Prions and Kingdome Monera) Q38) Organisms called methanogens are most abundant in … [ CBSE 2011]
  • a) Polluted stream
  • b) Cattle yard
  • c) Sulphur rock
  • d) Hot spring
Q.39
Largest population of organism of any type on earth is of … .. [ AMU 2009]
  • a) Insects
  • b) Algae
  • c) Bacteria
  • d) Fungi
Q.40
In eubacteria, a cellular component that resembles eukaryotic cell is … [ CBSE 2011]
  • a) Ribosome
  • b) Cell wall
  • c) Plasma membrane
  • d) Nucleus
Q.41
The term biosystematics was coined by … [ MPPMT 2010]
  • a) Linnaeus
  • b) Engler and Prantl
  • c) Camp and Gilly
  • d) Bentham and Hooker
Q.42
A bacterial disease is … .. [ CET Chd. 2002]
  • a) Tetanus
  • b) Polio
  • c) Filaria
  • d) Malaria
Q.43
Assertion : Severe Acute Respiratory Syndrome (SARS) originated in China Reason: China is the most populated country of the world
  • a) Both are true with reason being correct explanation
  • b) Both are true but reason not correct explanation
  • c) Assertion is true but reason is wrong
  • d) Both are wrong
Q.44
A peculiar odour found in marshy areas and cow sheds is of gas produced by ,,, [ DPMT 2011]
  • a) Archaebacteria
  • b) Cyanobacteria
  • c) Slime Mould
  • d) Mycoplasma
Q.45
Which one is found in alimentary canal of humans? [ RPMT 1995]
  • a) Pseudomonas
  • b) Rhizobium
  • c) Bacillus
  • d) Escherichia coli
Q.46
Disease pneumonia is due to … .. [ MPPMT 2000 ]
  • a) Virus
  • b) Bacterium
  • c) Cyanobacterium
  • d) Protozoan
Q.47
Diaminopimelic acid and muramic acid occur in the wall of … … [ MPPMT 1992]
  • a) Bacteria
  • b) Fungi
  • c) Brown algae
  • d) Higher plants
Q.48
Mitotic stages are not observed in … [ KCET 2011]
  • a) Saccharomyces
  • b) E.coli
  • c) Cosmarium
  • d) Chlorella
Q.49
Which one is included under prokaryotes? [ RPMT 1996]
  • a) Mycoplasma
  • b) Algae
  • c) Ulothrix
  • d) Mycoplasma and Blue –Green Algae
Q.50
Which of the following is true for Nostoc … [ KCET 2012]
  • a) Algae
  • b) Bacteriophage
  • c) Cyanobacteria
  • d) Mycoplasma
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