NEET Biology Multiple Choice Questions – Biological Classification

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Biological Classification Multiple Choice Questions And Answers

Question 1. Two kingdom system classification was given by

  1. Linnaeus
  2. John Ray
  3. Copeland
  4. Whittaker

Answer: 1. Linnaeus

Question 2. Which kingdom was introduced in four kingdom classifications and who proposed it?

  1. Protista and Copeland
  2. Plantae and Linnaeus
  3. Monera and Whittaker
  4. Monera and Copeland

Answer: 4. Monera and Copeland

Question 3. The kingdom system of classification is mainly based on

  1. Complexity of cell structure
  2. Mode of nutrition
  3. Complexity of body organization
  4. Ecological role

Answer: 2. Mode of nutrition

Biology MCQs with answers

Question 4. Which of the following is the major group in Monera?

  1. Eubacteria
  2. Cyanobacteria
  3. Archaebacteria
  4. All Of these

Answer: 1. Eubacteria

Question 5. Bacteria are considered primitive organisms because they

  1. Possess incipient nucleus
  2. Are small, microscopic plants, which are not seen by the naked eyes
  3. Cause serious diseases to human beings, domesticated animals, and crop plants
  4. Produce endospores which are very resistant to adverse conditions

Answer: 1. Possess incipient nucleus

Question 6. The term “bacteria” was given by

  1. Koch
  2. Pasteur
  3. Ehrenberg
  4. Stanley

Answer: 3. Ehrenberg

Biological Classification Multiple Choice Question and Answers

Question 7. 70S ribosomes, chromatophores, circular DNA. mesosomes are found in

  1. All eukaryotes
  2. All prokaryotes
  3. Some prokaryotes
  4. Some eukaryotes and some prokaryotes

Answer: 3. Some prokaryotes

Biology MCQs with answers

Question 8. A bacterium that bears flagella all over the surface is called

  1. Lophotrichous
  2. Cephalotrichous
  3. Peritrichous
  4. Amphitrichous

Answer: 3. Peritrichous

Question 9. A distinct lipopolysaccharide wall layer is found in

  1. Gram-positive bacteria
  2. Gram-negative bacteria
  3. All bacteria
  4. Mycoplasma

Answer: 2. Gram-negative bacteria

Question 10. In bacteria, the respiratory enzymes are situated in the

  1. Cytoplasm
  2. Cell membrane
  3. Ribosomes
  4. Mitochondria

Answer: 2. Cell membrane

Question 11. The cell wall in Gram-positive bacteria is composed of

  1. Lipid and protein
  2. Murein
  3. Proteins only
  4. Cellulose and pectin

Answer: 2. Murein

Biology MCQs with answers

Question 12. Cellulose is generally absent in the cell wall of bacteria except in a few such as Acetobacter xylene and Zymosarcina. In most bacteria, it is composed of

  1. Chitin
  2. A-acetyl muramic acid
  3. Alternating units of A-acetyl muramic acid and N- N-acetyl glucosamine joined by 1,4 linkages.
  4. 1,3-linked glucose molecule

Answer: 3. Alternating units of A-acetyl muramic acid and N- N-acetyl glucosamine joined by 1,4 linkages.

Question 13. Pili represent

  1. Extrachromosomal genetic elements
  2. Protoplasmic outgrowths of donor cells
  3. Small flagella
  4. Special bacterial cilia

Answer: 2. Protoplasmic outgrowths of donor cells

Question 14. Plasmids represent

  1. A group of monerans
  2. Small parasitic organisms
  3. Genetic elements
  4. Extrachromosomal genetic elements

Answer: 4. Extrachromosomal genetic elements

Question 15. The resting spores produced by bacteria in unfavorable conditions are called

  1. Oldie
  2. Endospores
  3. Exospores
  4. Chlamydosporcs

Answer: 2. Endospores

Question 16. Conjugation in bacteria was discovered by

  1. Beadle and Tatum
  2. Zinder and Lederberg
  3. Griffith
  4. Lederberg and Tatum

Answer: 4. Lederberg and Tatum

Question 17. Genophore is the name of

  1. DNA of eukaryotes
  2. DNA of bacteria
  3. Genes of Drosophila
  4. Genes of Neurospora

Answer: 2. DNA of bacteria

Question 18. There is no alternation of generation in Rttcberirhia colt because of there is no

  1. Syngamy
  2. Reduction division
  3. Conjugation
  4. Both 1 and 2

Answer: 4. Both 1 and 2

Question 19. The part of the bacterial chromosome that is homologous to a genome fragment transferred from donor to recipient cell in the formation of a merozygote is known as

  1. Exogcnotc
  2. Endogcnote
  3. Dysgenic
  4. Eugenio

Answer: 2. Endogcnote

Question 20. Which of the following bacterium is associated with de-nitrification?

  1. Azotobacter
  2. Rhodospirillum
  3. Pseudomonas
  4. Rhizohium

Answer: 3. Pseudomonas

Question 21. Broad-spectrum antibiotics is those which

  1. Acts on both pathogens and hosts
  2. Acts on all bacteria and viruses
  3. Acts on a variety of pathogenic microorganisms
  4. Is effective in very small amounts

Answer: 3. Acts on a variety of pathogenic microorganisms

Question 22. Bacteria that can survive in the absence of oxygen are known as

  1. Obligate anaerobes
  2. Facultative anaerobes
  3. Obligate aerobes
  4. Facultative aerobes

Answer: 2. Facultative anaerobes

Question 23. Streptomycin is produced by

  1. Streptomyces venezuelae
  2. Streptomyces griseus
  3. Stivptomyces cry tit re us
  4. Streptomyces atireofaciens

Answer: 2. Streptomyces griseus

Question 24. Food poisoning is caused by

  1. Clostridium tetani
  2. Clostridium botulinum
  3. Salmonella typhoid
  4. Mycobacterium tuberculosis

Answer: 2. Clostridium botulinum

Question 25. Rhizohium is a

  1. Symbiotic and Gram-negative bacterium
  2. Symbiotic and Gram-positive bacterium
  3. Free-living nitrogen-fixing bacterium
  4. Parasitic and nitrogen-fixing bacterium

Answer: 1. Symbiotic and Gram-negative bacterium

Question 26. Syphilis is caused by

  1. Neisseria gonorrhoeac
  2. Treponema pallidum
  3. Haemophilia pertussis
  4. Pasteurella pestis

Answer: 2. Treponema pallidum

Question 27. Jacob and Wollman coined the term

  1. Plasmid
  2. Episomc
  3. Circular DNA
  4. Chromosome

Answer: 2. Episomc

Biology MCQs with answers

Question 28. Branched-chain lipids occur in the cell membranes of

  1. Archaebacteria
  2. Mycoplasma
  3. Actinomycetes
  4. Streptomyces

Answer: 1. Archaebacteria

Question 29. Monerans producing conidia for reproduction belong to

  1. Eubacteria
  2. Archaebacteria
  3. Actinomycetes
  4. Mycoplasma

Answer: 3. Actinomycetes

Question 30. The smallest known monerans lacking cell wall are

  1. Spirochaetes
  2. Mycoplasmas
  3. Cyanobacteria
  4. Archaebacteria

Answer: 2. Mycoplasmas

Question 31. Cyanobacteria do not possess

  1. Gene recombinations
  2. Flagella
  3. Plasmids
  4. Lamellasomes

Answer: 2. Flagella

Question 32. Hcterocyst present in Nostoc is specialized for

  1. Fragmentation
  2. Nitrogen fixation
  3. Storage
  4. Photosynthesis

Answer: 2. Nitrogen fixation

Question 33. A cyanelle is

  1. A BGA associated with the human intestine
  2. A BGA associated with protists
  3. A tree-living BOA
  4. Any symbiotic BOA

Answer: 2. A BGA associated with protists

Question 34. “Contagium vivum fluidum” (i.e., living fluid infester) term has been given by

  1. Mayer
  2. Ivanowsky
  3. Beijerinck
  4. Bawden and Pine

Answer: 3. Beijerinck

NEET Biology MCQ

Question 35. The bacterial cell divides every one minute. It takes 15 min a cup to be one-fourth full. How much time will it take to fill the cup?

  1. 30 min
  2. 45 min
  3. 60 min
  4. 17 min

Answer: 4. 17 min

Question 36. Anaerobic monerans which are endosymbiotically associated with castles’ rumen are

  1. Bacillus
  2. Methanobacterium
  3. Halococcus
  4. Thermoacidophiles

Answer: 2. Methanobacterium

Question 37. The highly resistant nature of endospores is due to the presence of

  1. Dipicolinic acid and peptidoglycan in spore coat
  2. Peptidoglycan in exosporium
  3. Dipicolinic acid and Ca in cortex
  4. Dipicolinic acid and Ca in cell membrane

Answer: 3. Dipicolinic acid and Ca in the cortex

Question 38. Gange’s water purity is maintained by

  1. Bdellovibrio
  2. Clostridium
  3. Ferrobacillus
  4. Tolypothrix

Answer: 1. Bdellovibrio

Question 39. Find the correct match.

NEET Biology Biological Classification Match The Column Question 39

  1. (1) – (A), (2) – (C), (3) – (B), (4) – (D)
  2. (1) – (A), (2) – (B), (3) – (C), (4) – (D)
  3. (1) – (C), (2) – (B), (3) – (A), (4) – (D)
  4. (1) – (A), (2) – (B), (3) – (C), (4) – (D)

Answer: 1. (1) – (A), (2) – (C), (3) – (B), (4) – (D)

Question 40. The photosynthetic protists are

  1. Diatoms, euglenoids, and slime molds
  2. Sacrodines, dinoflagellates, and diatoms
  3. Euglenoids, diatoms, and dinoflagellates
  4. Ciliates, zooflagellates, and dinoflagellates

Answer: 3. Euglenoids, diatoms, and dinoflagellates

Question 41. Sea water glows during the night mainly due to the occurrence of

  1. Gonyaulax
  2. Noctiluca
  3. Euglena
  4. Cyclotella

Answer: 2. Noctiluca

NEET Biology MCQ

Question 42. Bivalved siliceous shells or frustules occur in

  1. Diatoms
  2. Radiolarians
  3. Zooflagellates
  4. Archaebacteria

Answer: 1. Diatoms

Question 43. Rejuvenescent spore of diatom is

  1. Haploid and exospores
  2. Diploid and statospore
  3. Haploid and stratosphere
  4. Diploid and auxospore

Answer: 4. Diploid and auxospore

Question 44. Choose the incorrect pair.

  1. Gonyaulax-red side
  2. Melos ira-golden algae
  3. Mycoplasma-cellulosic cell wall
  4. Nostoc-heterocyst

Answer: 3. Mycoplasma-cellulosic cell wall

Question 45. Leucosin (chrysolaminarin) is a carbohydrate that is stored as reserve food in case of

  1. Diatom
  2. Euglena
  3. Dinoflagellates
  4. Paramecium

Answer: 1. Diatom

Question 46. The reserved food in Euglena is

  1. Paramylum
  2. Starch
  3. Glycogen
  4. Mannitol

Answer: 1. Paramylum

Question 47. Flagellation in Euglena is

  1. Uniflagellation and stichonematic
  2. Isokont and whiplash-type
  3. Heterokont and whiplash-type
  4. Heterokont and stichonematic

Answer: 4. Heterokont and stichonematic

Question 48. A special type of red pigment present in the eyespot of Euglena and Crustacea is called

  1. Phycoerythrin
  2. Astaxanthin
  3. Carotene
  4. Xanthophyll

Answer: 2. Astaxanthin

NEET Biology MCQ

Question 49. Mixotrophic nutrition occurs in

  1. Paramecium
  2. Euglena
  3. Plasmodium
  4. Amoeba

Answer: 2. Euglena

Question 50. The paraflagellar body of Euglena helps in

  1. Locomotion
  2. Photoreception
  3. Reproduction
  4. Osmoregulation

Answer: 2. Photoreception

Question 51. The structure formed in the life cycle of cellular slime mold due to chemotactic movement is

  1. Pseudoplasmodium
  2. Swarm cells
  3. Macrocyst
  4. Capillitia

Answer: 1. Pseudoplasmodium

Question 52. Myxamoeba are formed in the life cycle of

  1. Physarum
  2. Amoeba
  3. Entamoeba
  4. Diatoms

Answer: 1. Physarum

Question 53. de Bary considered slime molds to be closely related to animals and called them

  1. Protozoa
  2. Metazoa
  3. Mycetozoa
  4. Mycotina

Answer: 3. Mycetozoa

Question 54. The difference between a red sea and red tide is that

  1. Red tide takes place in red sea
  2. Associated with cyanobacteria and protists, respectively
  3. One occurs by virus and the other by bacteria
  4. Associated with Rhodophyceae and diatoms, respectively

Answer: 2. Associated with cyanobacteria and protist, respectively

Question 55. de Bary was a leading

  1. Phycologist
  2. Mycologist
  3. Bryologist
  4. Pteridologist

Answer: 2. Mycologist

Question 56. Asexual spores of fungi (thallophytes) are commonly known as

  1. Oospores
  2. Motorsports
  3. Melceprcn
  4. Zygospores

Answer: 2. Mitosporcs

Question 57. Which one is not related to viroids?

  1. PSTD
  2. Diener
  3. ssRNA
  4. C-Jakob

Answer: 4. C-Jakob

Question 58. Which one of the following shows a haplodiplontic life cycle with four ascospores in the ascus?

  1. Budding yeast
  2. Fission yeast
  3. Helobial yeast
  4. False yeast

Answer: 1. Budding yeast

NEET Biology MCQ

Question 59. Gametangial copulation (conjugation) is common in

  1. Ascomycetes
  2. Zygomycetes
  3. Basidiomycetes
  4. Deuteromycetes

Answer: 2. Zygomycetes

Question 60. The causal agent of smallpox is

  1. Variola virus
  2. Rubella virus
  3. Rhino vims
  4. Arbo vims

Answer: 1. Variola virus

Question 61. If the thallus of an organism, for example, a fungus, is entirely converted into one or more reproductive structures, it is called as

  1. Eucarpic
  2. Holocarpic
  3. Holozoic
  4. Homothallic

Answer: 2. Holocarpic

Question 62. Subterranean masses of hyphae that pass the unfavorable periods in the dormant stage are known as

  1. Sclerotia
  2. Mycelium
  3. Rliizomorph
  4. Puffballs

Answer: 3. Rliizomorph

Question 63. Asexual reproduction by aplanospore formation is the feature of

  1. ac fung
  2. Fungi imperfecti
  3. Conjugating fungi
  4. Club fungi

Answer: 3. Conjugating fungi

Question 64. Find the correct match.

NEET Biology Biological Classification Match the Columns Question 64

  1. (1) – (B), (2) – (C), (3) – (A), (4) – (E)
  2. (1) – (B), (2) – (E), (3) – (D), (4) – (A)
  3. (1) – (B), (2) – (E), (3) – (D), (4) – (C)
  4. (1) – (C), (2) – (C), (3) – (A), (4) – (D)

Answer: 3. (1) – (B), (2) – (E), (3) – (D), (4) – (C)

Question 65. Haploid sexual spore produced exogenously is

  1. Ascospore
  2. Oospore
  3. Basidiospore
  4. Zygospore

Answer: 3. Basidiospore

Question 66. Select the incorrectly matched pair

  1. Mucor mucedo-Coprophilous
  2. Albugo candida-Facultative parasite
  3. Agaricus bisporus-Edible basidiocarp
  4. Puccinia grafninis-Heteroecious fungi

Answer: 2. Albugo candida-Facultative parasite

Question 67. Wheat rust of crucifer is caused by

  1. Albugo Candida
  2. Sclerospora
  3. Phytophthora infestans
  4. Pythium debaryanum

Answer: 1. Albugo Candida

NEET Biology MCQ

Question 68. Coenocytic mycelium does not occur in

  1. Zygomycetes
  2. Phycomycetes
  3. Oomycetes
  4. Deuteromycetes

Answer: 4. Deuteromycetes

Question 69. Members are found in aquatic habitats and on decaying wood in moist and damp places or as obligate parasites on plants; mycelium is aseptate and coenocytic.

  1. Phycomycetes
  2. Ascomycetes
  3. Basidiomycetes
  4. Deuteromycetes

Answer: 1. Phycomycetes

Question 70. One of the following is a global yeast.

  1. Saccharomyces
  2. Schizosaccharomyces
  3. Saccharomyces
  4. Schizomycetes

Answer: 3. Saccharomycodes

Question 71. One of the following is a true yeast.

  1. Candida
  2. Mycoderma
  3. Cryptococcus
  4. Saccharomyces

Answer: 4. Saccharomyces

Question 72. Fungi differ from bacteria in

  1. Mode of nutrition
  2. Having NAG in cell wall
  3. Flagella structure
  4. Reserve food material as glycogen

Answer: 3. Flagella structure

Question 73. Penicillin is obtained from

  1. Penicillium griseofulvum
  2. Penicillium chrysogenum
  3. Penicillium camembert
  4. Penicillium roqueforti

Answer: 2. Penicillium chrysogenum

Question 74. Branched conidiophores are found in

  1. Penicillium
  2. Rhizopus
  3. Ustilago
  4. Saccharomyces

Answer: 1. Penicillium

Question 75. The fruiting body in Aspergillus (or Penicillium) is known as

  1. Cleistothecium
  2. Apothecium
  3. Perithecium
  4. Hysterothecium

Answer: 1. Cleistothecium

Question 76. A mushroom having hallucinating properties similar to LSD is

  1. Morchella
  2. Psalliota
  3. Psilocybe
  4. Armillaria

Answer: 3. Psilocybe

Question 77. Powdery mildew of cereals is due to

  1. Puccinia graminis
  2. Claviceps purpurea
  3. Ustilago tritici
  4. Erysiphe graminicola

Answer: 4. Erysiphe graminicola

NEET Biology MCQ With Solutions

Question 78. Ergot is a product of

  1. Rhizopus
  2. Claviceps purpurea
  3. Aspergillus
  4. Sclerospora

Answer: 2. Claviceps purpurea

Question 79. The famous Irish famine is related to a disease of potatoes known as

  1. Late blight of potato
  2. Early blight of potato
  3. Dry rot of potato
  4. Potato scab

Answer: 1. Late blight of potato

Question 80. A fungus which is known as Guinea pig of the plant kingdom is

  1. Rhizopus
  2. Pythium
  3. Peziza
  4. Aspergillus

Answer: 4. Aspergillus

Question 81. A dolipore septum is a characteristic feature of

  1. Phycomycetes
  2. Ascomycetes
  3. Basidiomycetes
  4. Zygomycetes

Answer: 3. Basidiomycetes

Question 82. The fertile layer of gills is known as

  1. Hymenium
  2. Trama
  3. Paraphyses
  4. Basidia

Answer: 1. Hymenium

Question 83. An edible part of a mushroom is

  1. Primary mycelium
  2. Secondary mycelium
  3. Rhizomorph
  4. Basidiocarp

Answer: 4. Basidiocarp

Question 84. When two host species are required for the completion of a parasitic fungus life cycle, this condition is described as

  1. Autoecious
  2. Heteroecious
  3. Autotrophic
  4. Heterokaryotic

Answer: 2. Heteroecious

Question 85. Pioneer work on wheat rust was done by

  1. Mundkur
  2. Tulane
  3. K.C. Mehta
  4. Subramaniam

Answer: 3. K.C. Mehta

NEET Biology MCQ With Solutions

Question 86. The soredium is a reproductive structure of

  1. Ascomycetes
  2. Zygomycetes
  3. Basidiomycetes
  4. Lichens

Answer: 4. Lichens

Question 87. The most common chlorophycobiont in a lichen is

  1. Chlorella
  2. Trebouxia
  3. Gonium
  4. Chlamydomonas

Answer: 2. Trebouxia

Question 88. Indicators of water pollution

  1. E. coli
  2. Chlorella
  3. Beggiatoa
  4. Ulothrix

Answer: 1. E. coli

Question 89. DNA of E. coli

  1. ds circular
  2. ss circular
  3. ds linear
  4. ss linear

Answer: 1. ds circular

Question 90. Species separated by geographical barriers are called

  1. Allopatric
  2. Sympatric
  3. Sibling
  4. Endemic

Answer: 1. Allopatric

Question 91. Typhoid is caused by

  1. Rickettsiae
  2. Chlamydia
  3. Salmonella typhi
  4. Mycobacterium

Answer: 3. Salmonella typhi

Question 92. Non-symbiotic nitrogen-fixing bacteria is

  1. Rhizobium
  2. Azospirilium
  3. Azotobacter
  4. Nitrosomonas

Answer: 3. Azotobacter

Question 93. The difference between eukaryotes and prokaryotes is

  1. ss circular DNA in prokaryotes
  2. Histone with prokaryotic DNA
  3. Operon in eukaryotes
  4. Membrane-bound organelles in eukaryotes

Answer: 4. Membrane-bound organelles in eukaryotes

Question 94. According to the kingdom system, blue-green algae belongs to

  1. Metaphyta
  2. Monera
  3. Protista
  4. Algae

Answer: 2. Monera

Question 95. Bacteria are essential in the carbon cycle as

  1. Decomposer
  2. Synthesizer
  3. Consumer
  4. Primary producer

Answer: 1. Decomposer

Question 96. Transduction in bacteria is can be out by

  1. Bacteriophage
  2. BGA
  3. Mycoplasma
  4. Rickettsiae

Answer: 1. BGA

NEET Biology MCQ With Solutions

Question 97. Which of the following is most used in genetic engineering?

  1. E. coli and Agrobacterium
  2. Mycobacteria and Salmonella
  3. Aspergillus
  4. Penicillium

Answer: 1. E. coli and Agrobacterium

Question 98. Modem fanners can increase the yield of paddy up to 50% by the use of

  1. Cyanobacteria
  2. Rhizobium
  3. Cyanobacteria in Azolla pinnata
  4. Fann yard manure

Answer: 3. Cyanobacteria in Azolla pinnata

Question 99. Koch’s postulates are not applicable to

  1. Mycobacterium leprae
  2. Tuberculosis
  3. Pneumonia
  4. Cholera

Answer: 1. Mycobacterium leprae

Question 100. Plant-pathogenic bacteria are mostly

  1. Gram-positive, non-spore-forming
  2. Gram-negative non-spore-forming
  3. Gram negative spore fonning
  4. Gram negative spore fonning

Answer: 2. Gram-negative non-spore-forming

Question 101. Anabaena is associated with Azolla’s

  1. Stem
  2. Leaves
  3. Roots
  4. Flowers

Answer: 2. Leaves

Question 102. Nitrogen-fixing bacteria convert

  1. N2 → NH3
  2. NH+4+ → Nitrates
  3. NO2 →NO3
  4. NO3 →N2

Answer: 1. N2 → NH3

Question 103. The main reason of water blooms in rivers, lakes, sea, etc., is

  1. Brown algae and green algae
  2. Cyanobacteria and dinoflagellates
  3. Eichornia
  4. Fishes

Answer: 2. Cyanobacteria and dinoflagellates

Question 104. Azolla is used in the cultivation of

  1. Maize
  2. Sorghum
  3. Wheat
  4. Rice

Answer: 4. Rice

Question 105. Which one produces gas by decomposing the gobar (dung) in gobar gas?

  1. Fungus
  2. Virus
  3. Methanogenic
  4. Algae

Answer: 3. Methanogenic

Question 106. Maximum photosynthesis takes place by

  1. Phytoplankton
  2. Zooplankton
  3. Marsh plants
  4. Woody plants

Answer: 1. Phytoplankton

NEET Biology MCQ With Solutions

Question 107. The genetic material of prokaryotic cells is

  1. Non-historic double-stranded DNA
  2. Historic double-stranded DNA
  3. Histone and DNA both arc absent
  4. Histone without DNA

Answer: 1. Non-historic double-stranded DNA

Question 108. Diatomaceous earth is used as a heat insulator in boilers and steam pipes because the cell wall of diatom is

  1. Composed of Iron
  2. Composed of Silicon dioxide
  3. Conductor of heat
  4. Bad conductor of heat

Answer: 4. Bad conductor of heat

Question 109. One of the free-living anaerobic nitrogen-fixer is

  1. Beijernickia
  2. Rhodospirillum
  3. Rhizobiitm
  4. Azotobacter

Answer: 2. Rhodospirillum

Question 110. Some hyperthermophilic organisms that grow in highly acidic (pH = 2) habitats belong to the two groups

  1. Eubacteria and archaea
  2. Cyanobacteria and diatoms
  3. Protists and mosses
  4. Liverworts and yeasts

Answer: 1. Eubacteria and archaea

Question 111. Bacteria can be considered to be a plant because

  1. Some of the bacteria are photosynthetic
  2. Some of the bacteria have chlorophyll
  3. Some of the bacteria can make their own food
  4. Bacteria have cell wall

Answer: 4. Bacteria have cell wall

Question 112. The major component of the bacterial cell wall is a polymer called

  1. Chitin
  2. Xytan
  3. Cellulose
  4. Peptidoglycan

Answer: 4. Peptidoglycan

Question 113. Oxytetracycline is produced by

  1. Mycoplasma
  2. Actinomycetes
  3. Cyanobacteria
  4. Eubacteria

Answer: 2. Actinomycetes

Question 114. Cyanobacteria existed years ago.

  1. 2.9 billion
  2. 3.4 billion
  3. 1 million
  4. 44 thousand

Answer: 2. 3.4 billion

Question 115. Which of the following is non-symbiotic, anaerobic, non-photosynthetic nitrogen-fixing bacteria?

  1. Clostridium
  2. Nos toe
  3. Anabaena
  4. Azotobacter

Answer: 1. Clostridium

NEET Biology MCQ With Solutions

Question 116. Bacterial cells include all except

  1. Nuclear material without membrane
  2. Cell wall of murein
  3. DNA compounds with histones
  4. Ribosomes

Answer: 3. DNA compound with histones

Question 117. The pigment phycocyanin and phycoerythrin are present in

  1. Bacillariophyceae
  2. Archaebacteria
  3. Eubacteria
  4. Cyanobacteria

Answer: 4. Cyanobacteria

Question 118. Barophilic prokaryotes

  1. Grow slowly in highly alkaline frozen lakes at high altitudes.
  2. Occur in water containing high concentrations of barium hydroxide.
  3. Grow and multiply in deep marine sediments.
  4. Readily grow and divide in seawater enriched in any soluble salt of barium.

Answer: 3. Grow and multiply in deep marine sediments.

Question 119. Teichoic acid is present in

  1. Gram-positive bacteria
  2. Gram-negative bacteria
  3. Spirochaete
  4. Actinomycetes

Answer: 2. Gram-negative bacteria

Question 120. For the retting of jute, the fermenting microbe used is

  1. Helicobacter pylori
  2. Mesophilic bacteria
  3. Streptococcus lactic
  4. Butyric acid bacteria

Answer: 4. Butyric acid bacteria

Question 121. The free-living aerobic nitrogen-fixing bacterium is

  1. Azotobacter
  2. Rhizobium
  3. Clostridium
  4. Anabaena

Answer: 1. Azotobacter

Question 122. Cyanobacteria is

  1. Nitrogen-fixing free-living photosynthetic organism.
  2. Symbiotic mycorrhizae
  3. Photosynthetic algae
  4. Saprophytic fungus

Answer: 1. Nitrogen-fixing free-living photosynthetic organism.

Question 123. Genetic elements that may be present inside as well as extrachromosomal entities are

  1. Episomes
  2. Mesosomes
  3. Oxysomes
  4. Autosomes

Answer: 1. Episomes

Question 124. The bacterial cell wall is made up of

  1. Cellulose
  2. Hemicellulose
  3. Both (1) and (2)
  4. Peptidoglycan
  5. Glycogen

Answer: 4. Glycogen

Question 125. The most widely used bioweapon is

  1. Bacillus subtilis
  2. Pseudomonas putida
  3. Bacillus anthracis
  4. None above

Answer: 3. Bacillus anthracis

NEET MCQ

Question 126. A bacterial cell divides once every minute and it takes one hour to fill a cup. How much time will it take to fill half the cup?

  1. 30 minutes
  2. 60 minutes
  3. 29 minutes
  4. 59 minutes

Answer: 4. 59 minutes

Question 127. Bacteria is pathogenic due to

  1. Mitochondria
  2. Cell membrane
  3. Cell wall
  4. Nucleic acid

Answer: 4. Nucleic acid

Question 128. Which of the following is a non-pathogenic bacteria of the colon?

  1. Escherichia coli
  2. Balantidium coli
  3. Entamoeba coli
  4. Enterohius vermicularis

Answer: 2. Balantidium coli

Question 129. Treponema pallidum is

  1. The causative agent of syphilis
  2. The example of the spirochaete bacterium
  3. The causative agent of sexually transmitted disease
  4. All are correct

Answer: 4. All are correct

Question 130. Which of the following is correct?

  1. Bacteria are only autotrophic.
  2. Bacteria are only heterotrophic.
  3. Most are heterotrophic but few are autotrophic.
  4. Most bacteria are autotrophic but few are heterotrophic.

Answer: 3. Most are heterotrophic but few are autotrophic.

Question 131. WIDAL test is performed as the diagnostic value in

  1. Tuberculosis
  2. Typhoid
  3. Cholera
  4. Tetanus

Answer: 2. Typhoid

Question 132. The two bacteria found to be very useful in genetic engineering experiments are

  1. Nitrosomonas and Klebsiella
  2. Escherichia and Agrobacterium
  3. Nitrobacter and Azotobacter
  4. Rhizobium and Diplococcus

Answer: 2. Escherichia and Agrobacterium

Question 133. Pili of bacteria are useful for

  1. Locomotion
  2. Sexual contacts
  3. Asexual reproduction
  4. Transformation
  5. Feeding

Answer: 2. Sexual contacts

Question 134. The bacterium (Clostridium botulinum) that causes botulism is

  1. An obligate aerobe
  2. A facultative anaerobe
  3. An obligate anaerobe
  4. A facultative aerobe

Answer: 3. An obligate anaerobe

Question 135. In prokaryotes, what helps in anaerobic respiration?

  1. Mitochondria
  2. Folds of plasma membrane
  3. Ribosomes
  4. Cell wall

Answer: 2. Folds of plasma membrane

Question 136. Blue-green algae such as Nostoc and Anabaena can photosynthesize due to the presence of

  1. Heterocysts
  2. Akinetes
  3. Chromatophores
  4. Leghemoglobin

Answer: 3. Chromatophores

NEET MCQ

Question 137. The exceptional feature of blue-green algae which is the basis of their studies is

  1. Aplanospores
  2. Sclcrodia
  3. Heterocysts
  4. Haplospores

Answer: 3. Heterocysts

Question 138. Crown galls are caused in plants due to the infection of

  1. Insects
  2. Virus
  3. Bacteria
  4. Fungi

Answer: 3. Bacteria

Question 139. Curing often leaves is brought about by the activity of

  1. Fungi
  2. Bacteria
  3. Mycorrhizae
  4. Viruses

Answer: 2. Bacteria

Question 140. In prokaryotes, chromatophores are

  1. Specialized granules are responsible for the coloration of cells.
  2. Structures are responsible for organizing the shape of the organism.
  3. Inclusion bodies lie free inside the cells for carrying out various metabolic activities.
  4. Internal membrane systems may become extensive and complex in phtosythesis bacteria.

Answer: 4. Internal membrane systems that may become extensive and complex in photosynthesis bacteria.

Question 141. Which one of the following pathogens causes canker disease?

  1. Meloidogyne incognita
  2. Anguina tritici
  3. Xanthornonas citri
  4. Pseudomonas rubilineans
  5. Phytophthora infestans

Answer: 3. Pseudomonas rubilineans

Question 142. Find out the pairs that are correctly matched.

NEET Biology Biological Classification Match The Column Question 142

  1. (1) and (B)
  2. (2) and (C)
  3. (3) and (C)
  4. (4) and (C)
  5. (2) and (D)

Answer: 3. (3) and (C)

Question 143. Which one of the following statements about mycoplasma is wrong?

  1. They are pleomophic
  2. They are sensitive to penicillin
  3. They cause diseases in plants
  4. They are called PPLO

Answer: 2. They are sensitive to penicillin.

Question 144. The presence of a cluster of polar flagella is termed as

  1. Monotrichous
  2. Amphitriehous
  3. Lophotrichous
  4. Peritrichous

Answer: 3. Lophotrichous

Question 145. Some bacteria can also live in the absence of oxygen. These are

  1. Obligate aerobes
  2. Facultative aerobes
  3. Obligate anerobes
  4. Facultative anerobes

Answer: 1. Obligate aerobes

Question 146. What are the infoldings of the plasma membrane called in prokaryotes that store respiratory pigments?

  1. Glyoxysomes
  2. Oxysomes
  3. Mesosomes
  4. Cristae

Answer: 2. Oxysomes

Question 147. Plasmid is

  1. Small extract chromosomal circular self-replicating DNA that can carry genes into the host organism
  2. Bacteriophage
  3. DNA found in mitochondria
  4. DNA incorporated in bacteria

Answer: 4. DNA incorporated in bacteria

Question 148. The difference between Gram-negative and Gram-positive bacteria is in their

  1. Cell membrane
  2. Cell wall
  3. Ribosome
  4. Mitochondria

Answer: 4. Mitochondria

NEET MCQ

Question 149. The cell wall of a bacterium is made up of

  1. Cellulose
  2. Hemicellulose
  3. Lignin
  4. Peptidoglycan
  5. Glycogen

Answer: 2. Hemicellulose

Question 150. Which of the following Monerans lack cell walls?

  1. Actinomycetes
  2. Photosynthetic bacteria
  3. Eubacteria
  4. None above

Answer: 1. Actinomycetes

Question 151. Bacteria can live under sub-zero temperatures for

  1. More than 1000 years
  2. 100-1000 years
  3. Few years
  4. Few days

Answer: 1. More than 1000 years

Question 152. A set of bacterial diseases is

  1. Diptheria, leprosy, and plague
  2. Malaria, mumps, and polio
  3. Cholera, typhoid, and mumps
  4. Tetanus, TB, and malaria

Answer: 1. Diptheria, leprosy, and plague

Question 153. In prokaryotes, genetic recombination can occur during

  1. Transduction
  2. Transformation
  3. Conjugation
  4. All of these

Answer: 1. Transduction

Question 154. Thermococcus, Methanococcus, and Methanobacterium exemplify

  1. Archaebacteria that contain protein homologous to eukaryotic core histones.
  2. Archaebacteria that lack anarchist ones resemble those found in eukaryotes but whose DNA is negatively supercoiled.
  3. Bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria.
  4. Bacteria that contain a cytoskeleton and ribosomes.

Answer: 4. Bacteria that contain a cytoskeleton and ribosomes.

Question 155. Which one of the following is not characteristic of Gram-positive bacteria?

  1. Cell wall is smooth.
  2. Mesosomes are distinctively prominent.
  3. The basal body of the flagellum contains two rings.
  4. An outer membrane is present.
  5. The Murein content of cell wall is 70-80%.

Answer: 5. Murein content of cell wall is 70-80%.

Question 156. Pathogenicity of bacteria causing tuberculosis and lep¬rosy is due to

  1. Cholesterol
  2. Ergosterol
  3. Prostaglandins
  4. Glycerol
  5. Wax-D

Answer: 1. Cholesterol

NEET MCQ

Question 157. Bacterial leaf blight of rice is caused by a species of

  1. Xanthomonas
  2. Pseudomonas
  3. Alternaria
  4. Engine

Answer: 2. Pseudomonas

Question 158. Streptomyces griseus gives which of these antibiotics?

  1. Chloramphenicol
  2. Streptomycin
  3. Tetracycline
  4. Penicillin

Answer: 1. Chloramphenicol

Question 159. Indirect transfer of genetic material from one bacterium to another through bacteriophage is

  1. Transduction
  2. Transcription
  3. Conjugation
  4. Translation
  5. Transformation

Answer: 4. Transtation

Question 160. The bacterial brown rot of potatoes is caused by

  1. Xanthomonas citri
  2. Escherichia coli
  3. Agrobacterium tumofaciens
  4. Psuedomonas solanacearum
  5. Salmonella typhosa

Answer: 2. Escherichia coli

Question 161. Which of the following is a bacterial disease?

  1. Red rust of tea
  2. Citrus canker
  3. Red rot of sugarcane
  4. Late blight of potato

Answer: 2. Citrus canker

NEET Biology practice mcq questions with solution

Question 162. Shorter generation time of E. coli compared to eukaryotes may be explained on the basis of

  1. Shape
  2. Large surface and volume ratio
  3. Presence of cell wall
  4. Cell wall is smooth
  5. Absence of organelles

Answer: 2. Large surface and volume ratio

Question 163. Division in a bacteria cell is carried out through

  1. Multiple fission
  2. Binary fission
  3. Budding
  4. Plasmotomy

Answer: 3. Budding

Question 164. Antibiotic resistance genes are present on

  1. Plastid
  2. DNA
  3. Plasmid
  4. RNA

Answer: 3. DNA

Question 165. Cyanobacteria is a member of

  1. Fungi
  2. Protozoa
  3. Monera
  4. Pteridophytes

Answer: 2. Protozoa

Question 166. The Gram-negative bacteria detect and respond to the chemicals in their surroundings by

  1. Muramic acid
  2. Lipopolysaccharide
  3. Volutin granules
  4. Porins

Answer: 2. Lipopolysaccharide

NEET Biology practice mcq questions with solution

Question 167. Which of the following is not bacteria?

  1. Methanogens
  2. Diatoms
  3. Archaebacteria
  4. Blue-green algae

Answer: 2. Diatoms

Question 168. A bacterium is capable of withstanding extreme heat, dryness, and toxic chemicals. This indicates that it is probably able to form

  1. A thick peptidoglycan wall
  2. Endospores
  3. Endotoxins
  4. Endogenous buds

Answer: 3. Endotoxins

Question 169. The vector for plague is

  1. Anopheles
  2. Aedes
  3. Xenopsylla
  4. Culex

Answer: 2. Aedes

Question 170. Lung tuberculosis is caused by

  1. Pseudomonas aeruginosa
  2. Mycobacterium tuberculosis
  3. Streptococcus pneumoniae
  4. Escherichia coli

Answer: 2. Mycobacterium tuberculosis

Question 171. An example for symbiotic bacteria is

  1. Erwinia amylovora
  2. Rhizobium leguminosarum
  3. Xanthomonas campestris
  4. Agrobacterium tumefaciens

Answer: 3. Xanthomonas campestris

Question 172. Non-pathogenic bacteria found in our vermiform appendix is

  1. Entamoeba histolytica
  2. Shigella
  3. Escherichia coli
  4. Ascaris

Answer: 1. Entamoeba histolytica

Question 173. Which one of the following organisms possesses characteristics of plant and an animal?

  1. Euglena
  2. Bacteria
  3. Mycoplasma
  4. Paramoecium

2. Bacteria

Question 174. The scientist who coined the term Protista to include both plant and animal-like unicellular organisms was

  1. Robert Koch
  2. E.F. Haeckel
  3. L. Pasteur
  4. Joseph Lister

Answer: 1. Robert Koch

Question 175. Protista includes

  1. Protozoa, algae, and fungi
  2. Algae, Bryophyta, bacteria, and fungi
  3. Fungi, slime molds, and vascular plants
  4. Protozoa, bacteria, algae, and Bryophyta

Answer: 2. Algae, Bryophyta, bacteria, and fungi

Question 176. Slime molds belong to the kingdom

  1. Monera
  2. Protista
  3. Plantae
  4. Animalia

Answer: 1. Monera

Question 177. Which protist reproduces both by binary fission and conjugation?

  1. Amoeba
  2. Paramecium
  3. Euglena
  4. Monocytes

Answer: 2. Paramecium

Question 178. Total parasites belong to a protozoan group

  1. Sporozoa
  2. Ciliata
  3. Sarcodina
  4. Zooflagellata

Answer: 2. Ciliata

Question 179. Protozoan protists respire through

  1. Pseudopodia
  2. Contractile vacuole
  3. Mitochondria
  4. General surface

Answer: 1. Pseudopodia

Question 180. Which one is not a protozoan protist?

  1. Plasmodium vivax
  2. Paramecium caudatum
  3. Enterobius vermiclaris
  4. Trypanosoma gambiense

Answer: 2. Paramecium caudatum

Question 181. Protozoan protists are differentiated on the basis of

  1. Nuclei
  2. Size
  3. Shape
  4. Locomotory structures

Answer: 3. Shape

Question 182. Endoparasitic protistan protozoans belong to

  1. Sporozoa
  2. Ciliata
  3. Sarcodina
  4. Mastigophora

Answer: 4. Mastigophora

Question 183. Protozoans found commensal in the human colon is

  1. Entamoeba coli
  2. P. vivax
  3. A. aegypti
  4. All of these

Answer: 1. Entamoeba coli

Question 184. The primary grouping of protozoan protists is based on

  1. Locomotor organelles
  2. Size and shape
  3. Mode of feeding
  4. Mode of reproduction

Answer: 1. Locomotor organelles

Question 185. Protozoans are able to live efficiently due to their

  1. Motility
  2. Rapid reproduction
  3. Ability to manufacture food
  4. Specialized organelles

Answer: 1. Motility

Question 186. Protista contains

  1. Euglena, dinoflagellates, and yeast
  2. Amoeba, paramecium, hydra
  3. Euglena, paramecium, mushroom
  4. Amoeba, paramecium, and dinoflagellates

Answer: 4. Amoeba, paramecium, and dinoflagellates

Question 187. The cyanobacteria are also referred to as

  1. Golden algae
  2. Slime molds
  3. Blue-green algae
  4. Protists

Answer: 3. Blue-green algae

Question 188. Which one of the following does not differ in E. coli and Chlamydomonas

  1. Chromosomal organization
  2. Cell wall
  3. Cell membrane
  4. Ribosomes

Answer: 3. Cell membrane

Question 189. The nuclear membrane is absent in

  1. Agaricus
  2. Volvox
  3. Nostoc
  4. Penicillium

Answer: 3. Nostoc

Question 190. Maximum nutritional diversity is found in the group

  1. Animalia
  2. Monera
  3. Plantae
  4. Fungi

Answer: 2. Monera

Question 191. The most abundant prokaryotes helpful to humans in making curd from milk and in the production of antibiotics are the ones categorized as

  1. Archaebacteria
  2. Chemosynthetic autotrophs
  3. Heterotrophic bacteria
  4. Cyanobacteria

Answer: 3. Heterotrophic bacteria

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