Q.1
Anton van Leeuwenhoek belonged to … [ MPPMT 2002]
  • a) France
  • b) Holland
  • c) Sweden
  • d) Britain
Q.2
Botulism is … .. [ MPPMT 1992]
  • a) Human disease due to parasitic bacteria
  • b) Disease of various organisms
  • c) A type of food poisoning
  • d) A viral disease
Q.3
Which one is alga
  • a) Rhodospirillum
  • b) Cyanobacteria
  • c) Purple bacteria
  • d) Green bacteria
Q.4
Bacterial photosynthesis differs from photosynthesis of others in … [ JIPMER 1999]
  • a) First product
  • b) Number of phases
  • c) Type of reductant
  • d) All the above
Q.5
Retrovirus employs …. To make complementary DNA from RNA …
  • a) DNA polymerase
  • b) Restriction endonuclease
  • c) Reverse transcriptase
  • d) Reverse polymerase
Q.6
In blue green algae, product of photosynthesis is … [ AMU 2002]
  • a) Glycerophosphate
  • b) Glycogen like
  • c) Glucoside
  • d) Globulin
Q.7
Floral features are commonly used for identification of angiosperms because … .. [ CBSE 1998]
  • a) Reproductive parts are more conservative
  • b) Flowers can be safely pressed
  • c) Flowers are nice to work with
  • d) Flowers have various colours and scents
Q.8
Five –kingdom classification was proposed by … .[ MPPMT 1999 ]
  • a) Linnaeus
  • b) Whittaker
  • c) John Ray
  • d) Lamarck
Q.9
A completely free living organism which takes part in nitrogen fixation is … .. [ BHU 1999 ] Expanation is provided click on
  • a) Anabaena
  • b) Bacillus
  • c) Azotobacter
  • d) Rhizobium
Q.10
Bacterial resistance to antibiotic ampicillin can be due to presence of … [ Odisha 2003]
  • a) Penicillinase
  • b) Ampicillinase
  • c) Lactanase
  • d) Phosphotransferase
Q.11
Prokaryotic genetic system contains … [ CPMT 2002]
  • a) DNA and histone
  • b) DNA but no histone
  • c) Histone but no DNA
  • d) Neither DNA nor histones
Q.12
Viruses parasittising bacteria are …[ MPPMT 2010]
  • a) Bacteriophages
  • b) Bacto-viruses
  • c) Retroviruses
  • d) Plasmids
Q.13
Thermal bacteria survive in … [ BHU 2001]
  • a) Hot water near 100°C
  • b) Hot water near 85°C
  • c) Hot sulphur spring near 70°C
  • d) All the above
Q.14
Agrobacterium tumefaciens causes … [ CPMT 1998]
  • a) Wilt
  • b) Damping off
  • c) Rust
  • d) Crown gall
Q.15
Water of Ganges remains pure due to presence of ….. [MPPMT 1998]
  • a) Bacteriophages
  • b) Cyanophages
  • c) Bacteria
  • d) Hydrophytes
Q.16
Anthrax is due to a … .. [ DPMT 2002]
  • a) Virus
  • b) Bacterium
  • c) Fungus
  • d) Protozoan
Q.17
Which one is saprophytic in nutrition … .. [ CPMT 2001]
  • a) Fungi
  • b) Cyanobacteria
  • c) Viruses
  • d) All the above
Q.18
Classification given by Bentham and Hooker is … .. [ Odisha 2004]
  • a) Artificial
  • b) Natural
  • c) Phylogenetic
  • d) Numerical
Q.19
Cyanophyceae ( Blue Green Algae) belongs to … .. [ Pb.PMT1998]
  • a) Plantae
  • b) Protista
  • c) Monera
  • d) Metaphyta
Q.20
Bacterial endotoxin is … [ Odisha 2003]
  • a) Lipopolysaccharide over the surface
  • b) Protein inside the cell
  • c) An excreted protein
  • d) None of the above
Q.21
Match the columns
a)Nitrobacter i)Free living aerobic nitrogen fixer
b)Clostridium ii)Converts ammonia into nitrite
c) Nitrosococcus iii)Changes nitrite to nitrate
d)Azotobacter iv)Free living anaerobic nitrogen fixer
  • a) a – ii, b – iv, c – iii, d – i
  • b) a –iii, b – iv, c – ii, d - i
  • c) a – iv, b – ii, c – i, d – iii
  • d) a – i, b – ii, c – iii, d – iv
Q.22
Heterocysts that take part in nitrogen fixation occur in .. .. [ Pb. PMT 1997]
  • a) Nostoc
  • b) Polysiphonia
  • c) Fucus
  • d) Ulothrix
Q.23
Peptidoglycan is characteristic constituent of cell wall in … .. [ BHU 2000]
  • a) Archaebacteria and Eukaryotes
  • b) Eubacteria and unicellular Eukaryotes
  • c) Bacteria and Cyanobacteria
  • d) Monera and Protista
Q.24
Bacteria found in hot acidic aerobic conditions are … [ AMU 2011]
  • a) Halophiles
  • b) Thermoacidophiles
  • c) Methanogens
  • d) Rickettsiae
Q.25
Extrachromosomal DNA of bacteria is … [ AMU 2001]
  • a) Mesosome
  • b) Microsome
  • c) Plasmid
  • d) Chromosome
Q.26
Assertion: Nitrogen fixing bacteria of legume nodule live in oxygen depleted cells. Reason: Leghaemoglobin completely removes oxygen from nodule cells ….. [ AIIMS 2004]
  • a) If both the assertion and reason are true and reason explains the assertion.
  • b) If both the assertion and reason are true but reason does not explain the assertion
  • c) If assertion is true but reason is false
  • d) If assertion is false but reason is true.
Q.27
Number of criteria used in classifying organisms in five kingdom classification is
  • a) 5
  • b) 4
  • c) 3
  • d) 2
Q.28
Thallophyta includes … .. [ JIPMER 2000 ]
  • a) Fungi and Bacteria
  • b) Algae, Fungi , bacteria and Lichens
  • c) Algae, Fungi and Lichens
  • d) Algae and Fungi
Q.29
In Nostoc, the enzyme nitrogenase occurs in …. [ MPPMT 2001]
  • a) Vegetative cells
  • b) Heterocysts
  • c) Both a and b
  • d) Only in hormogones
Q.30
match the columns and bring out correct option of inhibitor and its effect
a) Chloramphenicol p) Inhibits binding of aminoacyl-tRNA to ribosome
b) Erythromycin q) Inhibits interaction between tRNA and mRNA
c) Neomycin r) Inhibits initiation of translation
d) Streptomycin s) Inhibits peptidyl transferase activity
e) Tetracycline t) Inhibits translocation of mRNA over ribosome
  • a) a – p, b –q, c - r, d - t, e - s
  • b) a – r, b –p, c - t, d - s, e - q
  • c) a – q, b –r, c - s, d - p, e - t
  • d) a – s, b –t, c - q, d - r, e - p
Q.31
Cell wall of Gram(+) bacterium contains mucopolypeptide … [ WB 2007]
  • a) 60-70%
  • b) 70-80%
  • c) 80-90%
  • d) 90-100%
Q.32
Unicellular cyanobacteria reproduce asexually by … [ AIIMS 1997]
  • a) Binary fission
  • b) Fragmentation
  • c) Hormogones
  • d) Conjugation
Q.33
Which one is true about domain archaea? ..[ CBSE 2008]
  • a) They differ from both prokaryotes and eukaryotes
  • b) They completely differ from prokaryotes
  • c) They resemble eukarya in all aspects
  • d) They have some novel features absent in other prokaryotes and eukaryotes
Q.34
The smallest living cells with cell wall are … .. [ AMU 1998]
  • a) Mycoplasma
  • b) Viroids
  • c) Blue –green Algae
  • d) Bacteria
Q.35
Mitochondria are absent in … [ MPPMT 1994]
  • a) Green Algae
  • b) Brown algae
  • c) Blue –green Algae
  • d) Red Algae
Q.36
A free living aerobic and non-photosynthetic nitrogen fixing bacterium is … [ HPPMT 2005]
  • a) Anabaena
  • b) Clostridium
  • c) Azotobacter
  • d) Rhizobium
Q.37
Natural system of classification was proposed by … .. [ CPMT 2009]
  • a) Bentham and Hooker
  • b) Hutchinson
  • c) Whittaker
  • d) Engler and Parntl
Q.38
Virus cannot multiply of their own because they .. … [ AFMC 2000]
  • a) Do not have sex organs
  • b) Lack genetic material
  • c) Lack cellular machinery to use its genetic material
  • d) none of the above
Q.39
land becomes slippery during rains due to growth of … .. [ JIPMER 1997]
  • a) Moss
  • b) Brown Algae
  • c) Green Algae
  • d) Blue-green Algae
Q.40
Colourless unicellular cell wall bound, spherical or rod-shaped microorganisms lacking organized nucleus are … ..[CPMT 2004]
  • a) Bacteria
  • b) Mycoplasma
  • c) Cyanobacteria
  • d) Viruses
Q.41
Diphtheria is characterized by … [ Odisah 2005]
  • a) Gum bleeding
  • b) Suffocation
  • c) Hydrophobia
  • d) Dehydration
Q.42
Food poisoning is due to … .. [ AIIMS 1996]
  • a) Clostridium botulinum
  • b) Salmonella typhi
  • c) Escherichia coli
  • d) Bacillus megatherium
Q.43
Linnaean system of plant classification is based on … .. [ CPMT 2008]
  • a) Morphological and anatomical characters
  • b) Evolutionary trends
  • c) Floral characters
  • d) None of the above
Q.44
Nitrogen fixation is … [ Odisha 2005]
  • a)N2 → NH3
  • b) N2 → NO3
  • c) N2 → Amino acid
  • d) Both a and b
Q.45
Mucopeptide is abundant in cell wall of …[ MPPMT 1999]
  • a) Cyanobacteria
  • b) Gram(+) bacteria
  • c) Gram(-) bacteria
  • d) Bacteriophage
Q.46
Blue green algae are .. .. [ MPPMT 2004]
  • a) Actinomycetes
  • b) Eukaryotes
  • c) Prokaryotes
  • d) Acellular
Q.47
In classification of plants, the term cladistics refers to … .. [ kerala 2006]
  • a) Phylogenetic classification
  • b) Sexual classification
  • c) Artificial classification
  • d) Natural classification
Q.48
Classical systematic embodies/concept of classical taxonomist is … .. [ JIPMER 1997]
  • a) Biological concepts
  • b) Species concept
  • c) Typological concept
  • d) All the above
Q.49
Nuclear material without nuclear envelope occurs in … .. [ AMU 1998]
  • a) Mycoplasma and Green Algae
  • b) Bacteria and Green Algae
  • c) Bacteria and Cyanobacteria
  • d) Cyanobacteria and Red Algae
Q.50
Antibiotics are … [ MPPMT 2005]
  • a) Medicines
  • b) Toxins
  • c) Plants
  • d) Syrups
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