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NEET Biology MCQ
Biological Classification Viruses, Viroids, Prions And Kingdome Monera MCQ
Quiz 2
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Q.1
In the five kingdom classification Euglena has been placed in … [ RPMT 2011]
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a) Fungi
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b) Protista
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c) Plantae
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d) Archaea
Explanation
Answer : (b)
Q.2
A bacterial cell divides once every minute. It takes one hour to fill a cup. How much time will it take to fill half cup … [ KCET 2001]
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a) 59 minutes
0%
b) 30 minutes
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c) 29 minutes
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d) 20 minutes
Explanation
Cell divide in one minute, so 1 cell produce two cells Given that cup gets full in 60 minites If cup is half filled at 59th minutes then bacteria will double in last 60th minute to make it full Answer : (a)
Q.3
Which one contains double stranded RNA … [ Odisha 2004]
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a) TMV
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b) Reovirus
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c) Φ × 174
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d) Cauliflower Mosaic Virus
Explanation
Reoviridae is a family of viruses. They are unique in that they lack lipid envelopes and package their genomes of discrete double-stranded segments of RNA within multi-layered capsids. It is ssDNA virus. Answer : (b)
Q.4
Which is absent in prokaryotes? .. [ RPMT 1995]
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a) Nuclear envelope
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b) Golgi apparatus
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c) Mitochondria
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d) All the above
Explanation
A prokaryote is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle Answer : (d)
Q.5
Select the correct combinations of statements( a-d) regarding the characteristics of certain organisms [C.B.S.E. mains 2010] a) Methanogens are archaebacteria which produce methane in marshy areas b) Nostoc is a filamentous blue green alga which fixes atmospheric nitrogen c) Chemosynthesis autotrophic bacteria synthesize cellulose from glucose d) Mycoplasma lacks a cell wall and can survive without oxygen The correct statements are
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a) b, c
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b) a,b,c
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c) b,c,d
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d) a,b,d
Explanation
Chemosynthetic autotrophs oxidize inorganic substances to produce energy and helps cycling of minerals. Answer : (d)
Q.6
Heating food and water will check diseases except … [ Odisha 2003] Explanation is provided, please click on
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a) Salmonella infection
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b) Cholera
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c) Hepatitis –B
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d) Botulism
Explanation
The hepatitis B virus is spread when blood, semen, or other body fluid infected with the hepatitis B virus enters the body of a person who is not infected Not through food Answer : (c)
Q.7
Tetanus is caused by … .. [ CPMT 2004 ]
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a) Bacterium
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b) Virus
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c) Fungi
0%
d) Mycoplasma
Explanation
Tetanus is caused by an infection with the bacterium Clostridium tetani, which is commonly found in soil, saliva, dust, and manure. The bacteria generally enter through a break in the skin such as a cut or puncture wound by a contaminated object. Answer : (a)
Q.8
Comma shaped bacteria are … [ AFMC 2001]
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a) Bacilli
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b) Spirillum
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c) Vibrio
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d) Cocci
Explanation
Answer : (c)
Q.9
Which one belongs to monera? … .. [ CBSE 1990]
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a) Amoeba
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b) Escherichia
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c) Gelidium
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d) Spirogyra
Explanation
Answer : (b)
Q.10
Blue-green algae are called cyanobacteria because they … [ MPPMT 2012]
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a) Are not green
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b) Do not have nucleus
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c) Do not produce gametes
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d) Are as small as bacteria
Explanation
Answer : (b)
Q.11
Coliphage φ×174 virus contains .. .. [ AIIMS 1991]
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a) Single stranded RNA
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b)Double stranded RNS
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c) Single stranded DNA
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d) Double Stranded DNA
Explanation
Answer : (c)
Q.12
Shape of Staphylococcus bacteria is
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a) Spherical
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b) Oval
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c) Elongated
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d) Cubical
Explanation
Answer : (a)
Q.13
Genetic material of HIV is … .. [ JKCMEE 2004 ]
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a) ss DNA
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b) ss RNA
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c) ds RNA
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d) ds DNA
Explanation
Answer : (b)
Q.14
Some hyperthermophilic organisms that grow in highly acidic (pH2) habitats belong to two groups ( C.B.S.E 2010)
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a) Cyanobacteria and diatoms
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b) Protists and mosses
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c) Liverworts and yeasts
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d) Eubacteria and archaea
Explanation
Answer : (d)
Q.15
Which one is present in prokaryotes? … [ Bih. PMT 1995]
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a) Nucleus
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b) Golgi apparatus
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c) Mitochondria
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d) None of the above
Explanation
Answer : (d)
Q.16
Which is absent in bacteria … [ CPMT 2003]
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a) Cell wall
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b) Mesosome
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c) Mitochondria
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d) RNA
Explanation
Answer : (c)
Q.17
T.B. is produced by … .. [ JIPMER 1990]
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a) Mycobacterium species
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b) Aspergillus species
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c) Clostridium species
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d) Vibrio species
Explanation
Answer : (a)
Q.18
Select the correct matches i) Nitrosomonas – nitrite to nitrate ii) Thiobacillus – denitrification iii) Nostoc – free living nitrogen fixer iv) Azotobacter – anaerobic nitrogen fixer
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a) i and ii
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b) ii and iii
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c) I and iii
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d) iii and iv
Explanation
Answer : (b)
Q.19
An organism without true nucleus is … [ EAMCET 1995]
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a) Bacterium
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b) Archaebacterium
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c) Cyanobacterium
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d) All the above
Explanation
Answer : (d)
Q.20
A filamentous nitrogen fixing bacterium is present in root nodules of flowering plants. .. [ CBSE 2007]
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a) Cicer arietinum
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b) Casuarina equisetifolia
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c) Cycas revoluta
0%
d) Crotalaria juncea
Explanation
Answer : (b)
Q.21
Rod-shaped bacteria are called … [ Odisha 2007]
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a) Cocci
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b) bacilli
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c) Spirillum
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d) Vibrio
Explanation
Answer : (b)
Q.22
In mycoplasma (PPLO) the plasmalemma is rich in…. [ Kerala 2001]
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a) Cholesterol
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b) Glycogen
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c) Cellulose
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d) Myosin
Explanation
Answer : (a)
Q.23
Viral genome that has been double integrated and incorporated with bacterial genome is called .. .. [ BHU 2006]
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a) DNA
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b) Prophage
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c) RNA
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d) Both B and C
Explanation
Answer : (b)
Q.24
Which one takes part in nitrogen fixation? …[ MPPMT 1995]
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a) Nitrosococcus
0%
b) Nitrosomonas
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c) Nitrobacter
0%
d) Rhizobium
Explanation
Answer : (d)
Q.25
Penicillin has inhibitory effect over bacteria by … [ Odisha 2006]
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a) Destruction of nucleus
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b) Inhibition of cell wall synthesis
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c) Stopping entrance of antibody
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d) None of the above
Explanation
Answer : (b)
Q.26
Bacteria that are smallest in size are … [ Manipur 2006]
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a) Bacilli
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b) Cocci
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c) Spirilla
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d) Vibrios
Explanation
Answer : (b)
Q.27
In bacteria the respiratory enzymes are situated in the part … .. [ PMT 1997]
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a) Cell membrane
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b) Cytoplasm
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c) Mitochondria
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d) Ribosomes
Explanation
Answer : (a)
Q.28
Which is prokaryote? … [ AMU 1997]
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a) Rhizopus
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b) Spirogyra
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c) Nostoc
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d) Saccharomyces
Explanation
Answer : (c)
Q.29
Nuclear material of bacterial cell is known as … [ MPPMT 2001]
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a) Nucleus
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b) Nucleolus
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c) Plasmid
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d) Nucleoid
Explanation
Answer : (d)
Q.30
Which of the following is not of fungal origin ..[ Odisha 2012]
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a) Calvacin
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b) Citric acid
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c) Ergotamine
0%
d) Tetracycline
Explanation
Answer : (d)
Q.31
The condition of having a single flagellum at one end of a bacterium is … [ AMU 1997]
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a) Peritrichous
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b) Amphitrichous
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c) Lophotrichous
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d) Monotrichous
Explanation
Answer : (d)
Q.32
Teichoic acid is present in cell wall of …. [ MPPMT 2000]
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a) Bacteriophage
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b) Mycoplasma
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c) Nostoc
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d) Pneumococcus
Explanation
Answer : (d)
Q.33
Process of reverse transcription was discovered by … ..
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a) Garrod
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b) Temin and Baltimore
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c) Beadle and Tatum
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d) Marshall and Nirenberg
Explanation
Answer : (b)
Q.34
Pick up the wrong statement : [ ReAIPMT 2015]
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a) Nuclear membrane is present in Monera
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b) Cell wall is absent in Animalia
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c) Protista have photosynthetic and heterotrophic modes of nutrition
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d) Some fungi are edible
Explanation
Answer:(a)
Q.35
Many bacteria possess hairy appendages on their cell walls. They are. … [ AFMC 1996]
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a) Hairs
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b) Flagella
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c) Cilia
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d) Fimbriae
Explanation
Answer : (d)
Q.36
Alternation of generations is not found in bacterium E. coli due to lack of … [ RPMT 2006]
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a) Syngamy
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b) Reduction division
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c) Nucleus
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d) Chromosomes
Explanation
Answer : (b)
Q.37
Common cold is not cured by antibiotic as it is … .. [ CBSE mains 2011]
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a) Caused by virus
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b) Caused by Gram (+) bacterium
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c) Caused by Gram (-) bacterium
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d) Not an infectious disease
Explanation
Answer : (a)
Q.38
Gram(-) bacterium is … [ DPMT 2011]
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a) Streptomyces coelicolor
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b) Escherichia coli
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c) Ampycolatopsis orientalis
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d) Bacillus subtilis
Explanation
Answer : (b)
Q.39
A bacterium divides every 35 minutes. If a culture contains 105 cell/ml is grown for 175 minutes, what will be cell concentration after that period … [ BHU 2008]
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a) 175 × 105
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b) 35 × 105
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c) 5 × 105
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d) 32 × 105
Explanation
A population of bacterium doubles every 35 minutes.There are 5 35 minutes session in 175 minutes. Initially the population is 1 × 105. After 35 minutes the concentraion will double i.e. it will become 2 × 105. At the end of 70 minutes concentration will be 2 times of 2 × 105 i.e. 4 × 105. Similarly at 105 minutes concentration will 8 × 105, at 140 minutes will be 16 × 105 At end of 175 minutes concentration will be 32 × 105 Answer : (d)
Q.40
Curing of Tea leaves is brought about by the activity of …… [ CBSE 2006]
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a) Fungi
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b) Bacteria
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c) Viruses
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d) Mycorrhiza
Explanation
Answer : (b)
Q.41
Streptomycin is effective against bacteria … [ AMU 1999]
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a) Gram (+)
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b) Gram (-)
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c) Gram neutral
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d) both a and b
Explanation
Answer : (d)
Q.42
True nucleus and mitochondria are absent in…. [ RPMT 2000]
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a) Cyanophyceae
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b) Chlorophyceae
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c) Myxomycetes
0%
d) Azolla
Explanation
Answer : (a)
Q.43
For retting of Jute, the fermenting microbe is … [ CBSE 2005]
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a) Methanogenic bacteria
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b) Butyric acid bacteria
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c) Helicobacter pylori
0%
d) Streptococcus lactis
Explanation
Answer : (b)
Q.44
Plasmids are found naturally in … [ KCET 2001 ]
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a) Viruses
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b) Chloroplasts
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c) Chromosomes
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d) Bacteria
Explanation
Answer : (d)
Q.45
Bacteria are considered as plants as they … [ BHU 2008]
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a) Are green in colour
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b) Have rigid cell wall
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c) Have chlorophyll
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d) Have stomata
Explanation
Answer : (b)
Q.46
Bacteria having comma-like single curve in their body are …. .. [ CET Chd 2003]
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a) Bacilli
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b) Cocci
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c) Vibrio
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d) Spirilla
Explanation
Answer : (c)
Q.47
Nucleic acid does not occur in … .. [ RPMT 2011]
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a) Prion
0%
b) Viroid
0%
c) Virus
0%
d) Mycoplasma
Explanation
Answer : (a)
Q.48
What is genophore … [ WB 2011]
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a) DNA in prokaryotes
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b) DNA and RNA in prokaryotes
0%
c) DNA and proteins in prokaryotes
0%
d) RNA in prokaryotes
Explanation
Answer : (b)
Q.49
Virus was discovered by … .. [ AFMC 1996]
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a) Stanley
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b) Ivanowski
0%
c) Herelle
0%
d) Bjierinck
Explanation
Answer : (b)
Q.50
Multicellular fragment of a blue green alga capable of growth into new plant is … [ JIPMER 2000]
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a) Hormocyst
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b) Trichome
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c) Trichogyne
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d) Hormogonium
Explanation
Answer : (d)
0 h : 0 m : 1 s
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