NEET Biology Chapter Wise Mock Test – Biological Classification
1. All monerans
(a) contain DNA and RNA
(b) demonstrate a long circular strand of DNA, notfound enclosed in a nuclear membrane 0
(c) are bacteria
(d) All of the above
2. The most primitive monerans are
(a) Rickettsiae
(b) Actinomycetes
(c) Progenote
(d) Archaebacteria
3. Archaebacteria found in salt pans and saltmarshes are
(a) methanogens
(b) thermoacidophiles
(c) ruminent symbionts
(d) halophiles
4. Thermococcus, Methanococcus and Methanobacterium exemplify
(a) archaebacteria that contain protein homologous to eukaryotic core histones
(b) archaebacteria that lack any histones resembling those found in eukaryotes, but whose DNA is negatively supercoiled
(c) bacteria whose DNA is rolaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria
(d) bacteria that contain a cytoskeleton and ribosomes
5.Extra nuclear DNA in E. coli is termed as
(a) F+ factor
(b) sex factor
(c) episome
(d) All of these
6.Bacteria are (were) considered more as plants than animals because of the presence of
(a)small nucleus
(b) plasma membrane
(c) cell wall
(d) spore formation
7.The bacterium (Clostridium botulinum) that causes botulism is
(a) a facultative anaerobe
(b) an obligate anaerobe
(c) a facultative aerobe
(d) an obligate aerobe
8.When a bacteriophage in its lytic phase, carries some of the bacterium’s partially digested chromosome with it to anotherhost cell, the process is called
(a) transformation
(b) general transduction
(c) restricted transduction
(d) conjugation
9.Which statement is correct for the bacterial transduction?
(a) transfer of some genes from one bacteria to another bacteria through virus
(b) transfer of genes from one bacteria to another bacteria by conjugation
(c) bacteria obtained its DNA directly
(d) bacteria obtained DNA from other external source
10.The fertility or F+ factor that plays a role in conjugation is a
(a) retrovirus
(b) plasmid
(c) viroid
(d) lysogenic phage
11. Curing of tea leaves is brought about by the activity of
(a) bacteria
(b) mycorrhiza
(c) viruses
(d) fungi
12. Nitrifying bacteria convert the
(a) nitrates into nitrites
(b) nitrites into nitrates
(c) ammonium salts into nitrates
(d) ammonium salts into amino acid
13. Which of the following statements regarding cilia is not correct?
(a) The organised beating of cilia is controlled by fluxes of Ca2+ across the membrane
(b) Cilia are hair-like cellular appendages
(c) Microtubules of cilia are composed of tubulin
(d) Cilia contain an outer ring of nine doublet microtubules surrounding two single microtubules
14. The bacterial genome is called
(a) nucleu
(b) nucleolus
(c) nucleoid
(d) None of these
15. Bacterial flagella do not show ATPase activity and9 + 2 organisation. These are chemically
(a) flagellin
(b) pilin
(c) tubulin
(d) bacterin
16. Certain bacteria living in the soil, poor in oxygen convert nitrates into nitrites qpd then to free nitrogen and such bacteria are termed as
(a) nitrogen fixing bacteria
(b) denitrifying bacteria
(c) ammonifying bacteria
(d) saprophytic bacteria
17. Basophilic prokaryotes
(a) grow slowly in highly alkaline frozen lakes at high altitudes
(b) occur in water containing high concentration of barium hydroxide
(c) grow and multiply in very deep marine sediments
(d) readily grow and divide in sea water enriched in any soluble salt of barium
18. All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia
(a) can induce root nodules on many plant species
(b) can fix nitrogen in the free-living state
(c) like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host’s cortex
(d) forms specialised vesicles, in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids
19. Which of the following bacteria plays a key role in gastritis and peptic ulcer disease?
(a) Mycobacterium tuberculosis .
(b) Helicobacter pylori
(c) Thermophillus aquaticus
(d) Methylophylus methylotroph’us
20. Bacterial flagella is made up of
(a) proteins
(b) amines
(c) lipids
(d) carbohydrates
21. The bacteria Pseudomonas is useful because of its ability to
(a) transfer genes from one plant to another
(b) decompose a variety of organic compounds
(c) fix atmospheric nitrogen in the soil
(d) produce a wide variety of antibiotics
22. Viral genome, incorporated and integrated with bacterial genome is referred to as
(a) prophages
(b) RNA
(c) DNA
(b) Both (a) and (c)
23. The greatest biomass of autotrophs in the world’s oceans is that of
(a) benthic brown algae, coastal red algae and daphnids
(b) benthic diatoms and marine viruses
(c) sea grasses and slime moulds
(d) free-floating micro-algae, cyanobacteria and nanoplankton
24. The cells of cyanobacteria and bacteria exhibit similarity in having
(a) plastids
(b) nuclei
(c) centrosome
(d) naked DNA
25. A free-living nitrogen fixing cyanobacterium, which can also form symbiotic association with the water fern Azolla is
(a) Tolypothrix
(b) Chlorella
(c) Nostoc
(d) Anabaena
26. In mycoplasma (PPLO), the plasmalemma is rich in
(a) cholesterol
(b) glycogen
(c) cellulose
(d) myosin
27. Mycoplasma differ from viruses in that they are sensitive to
(a) penicillin
(b) tetracyclines
(c) sugars
(d) amino acids
28. Outer limiting layer of mycoplasma is layer
(a) slime layer
(b) mucilage layer
(c) cell wall
(d) cell membrane
29. Which one of the following statements about mycoplasma is wrong?
(a) They are also called PPLO
(b) They are pleomorphic
(c) They are sensitive to penicillin
(d) They cause disease in plants
30. Which of the following microorganism is the smallest living cell without cell wall?
(a) Virus
(b) Archaebacteria
(c) Mycoplasma
(d) Eubacteria
31. The causative agent of mad-cow disease is a
(a) bacterium
(b) prion
(c) worm
(d) virus
32. Which of the following is not correct about viruses?
(a) In addition to proteins, viruses also contain genetic material that could be either DNA or RNA
(b) No virus contains both RNA and DNA
(c) A virus is a nucleoprotein and genetic material is infectious
(d) The protein coat called capsid is made up of small subunits called viroids
33. Viruses that infect bacteria multiply and cause their lysis, are called
(a) lysozymes
(b) lipolytic
(c) lytic
(d) lysogenic
34. In 1971, TO Diener discovered a new infectious agent that was smaller than viruses and known as viroid. Which of the following disease is caused by viroids?
(a) Bunchy top of banana
(b) Witches broom
(c) Potato spindle tuber disease
(d) None of the above
35. Cell theory was proposed by Schleiden and Schwann.
Which of the following is an exception for cell theory?
(a) Archaebacteria
(b) Eubacteria
(c) Viruses
(d) Dinoflagellates
36. The correct statement is
(a) generally viruses that infect plants have single stranded RNA
(b) generally viruses that infect Animals have either single or double stranded RNA or double stranded DNA
(c) bacteriophages are double stranded DNA viruses
(d) All of the above
37. Single stranded DNA is found in
(a) TMV (b) Mycobacterium
(c) ∅ x 174 (d) all viruses
38. Double stranded RNA is found in
(a) Reoviruses
(b) TMV
(c) T2-bacteriophages
(d) T4-bacteriophages
39. Contagium vivum fluidum was proposed by
(a) DJ Ivanowsky
(b) MW Beijerinck
(c) Stanley
(d) Robert Hook
40. In cyanophages, the genetic material is
(a) DNA (b) RNA
(c) Both (a) and (b)
(d) Proteins
41. A naked RNA particle causing the symptoms like that of a viral disease is known as
(a) viroid
(b) virion
(c) viral
(d) None of these
42. Outer covering of virus made up of protein is
(a) capsid
(b) coat
(c) virion
(d) viroid
43. Rickettsiae belong to the group under
(a) an independent category between viruses an bacteria
(b) fungi
(c) viruses
(d) bacteria
44. Which of the following is a slime mould?
(a) Rhizopus
(b) Physarum
(c) Thiobacillus
(d) Anabaena
45. The thalloid body of a slime mould (Myxomycetes) is known as
(a) protonema
(b) Plasmodium
(c) fruiting body
(d) mycelium’
46. What is common about Trypanosoma, Noctiluca, Monocystis and Giardia?
(a) These are all unicellular protists
(b) They have flagella
(c) They produce spores
(d) These are all parasites
47. Auxospores and hormocysts are fprmed, respectively by
(a) several diatoms and a few cyanobacteria
(b) several cyanobacteria and several diatoms
(c) some diatoms and several cyanobacteria
(d) some cyanobacteria and many diatoms
48. Slime moulds in the division-Myxomycota (true slime moulds) have
(a) pseudoplasmodia
(b) spores that develop into free-living amoeboid cells
(c) spores that develop into flagellated gametes
(d) feeding stages consisting of solitary individual cells
49. Which of the following is a dinoflagellate responsible for red tides?
(a) Anabaena
(b) Gonyaulaux
(c) Mycoplasma
(d) Archaebacteria
50. The slime moulds and multicellular algae are presently included in the kingdom-Protista because
(a) they appear to be more closely related to unicellular eukaryotes
(b) they lack important characteristics of the fungi and plants ,
(c) kingdom-Protista includes eukaryotic organisms that do not clearly belong in the other three kingdoms
(d) AII of the above
51. Which of the following is not correctly matched?
(a) Amoeboid protozoan — Amoeba
(b) Flagellated protozoan — Trypanosoma
(c) Sporozoan — Anopheles
(d) Ciliated protozoan — Paramecium
52. Which of the following unicellular organisms has a macronucleus for trophic function and one or more mirconuclei for reproduction?
(a) Euglena
(b) Amoeba
(c) Paramecium
(d) Trypanosoma
53. Man, in the life cycle of Plasmodium is
(a) primary host
(b) secondary host
(c) Both (a) and (b)
(d) None of these
54. Which of the following is not the locomotory organ of Protozoa?
(a) Cilia
(b) Flagella
(c) Parapodia
(d) Pseudopodia
55. Golden brown protists belong to
(a) Chrysophytes
(b) Euglenoids
(c) Dinoflagellates
(d) Diatoms
56. Protists having transverse and longitudinal groove in their theca are
(a) foraminiferans
(b) radiolarians
(c) diatoms
(d) dinoflagellates
57. Nuclear dimorphism occurs in group
(a) zooflagellata
(b) ciliata
(c) sporozoa
(d) sarcodina
58. Myxomycetes are
(a) saprobes or parasites, having mycelia, asexual reproduction by fragmentation, sexual reproduction by fusion of gametes
(b) slimy mass of multinucleate protoplasm having pseudopodia like structures for engulfing food, reproduction through fragmentation or zoospores
(c) prokaryotic organisms, cellular or acellular, saprobes or autotrophs, reproduce by binary fission
(d) eukaryotic, single-celled or filan^entous saprobes or autotrophs, asexual reproduction by division of haploid individuals, sexual reproduction by fusion of two cells or their nuclei
59. In the following table, identify the correct matching of the crop, its pathogen. disease and the corresponding
Crop Disease Pathogen
(a) Citrus Canker Pseudomonas rubrilineans
(b) Potato Late blight Fusarium udum
(c) Brinjal Root-knot Meloidogyne incognita
(d) Pigeon pea Seed gall Phytophthora infestans
60. With respect to fungal sexual cycle, choose the correct sequence of events.
(a) Karyogamy, plasmogamy and meiosis
(b) Meiosis, plasmogamy and karyogamy
(c) Plasmogamy, karyogamy and meiosis
(d) Meiosis, karyogamy and plasmogamy
61. A dikaryon is formed when
(a) meiosis is arrested
(b) the two haploid cells do not fuse immediately
(c) cytoplasm does not fuse
(d) None of the above
62. In most of the fungi, the food material is stored in the form of
(a) starch
(b) glucose
(c) sucrose
(d) glycogen
Direction (Q. Nos. 63-65) In each of the following questions, a statement of Assertion is given followed by corresponding statement of Reason. Of the statements, make the correct answer as
(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
(b) Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
(c) Assertion is true, but Reason is false
(d) Assertion is false, but Reason is true
63. Assertion Monera includes all prokaryotes.
Reason Nuclei of monerans are not organised with nuclear membrane, nucleoplasm chromatic fibres and nucleolus.
64. Assertion In bacteria the chromosomes is irregularly folded into a compact mass, the nucleoid or genophore of definite form.
Reason In bacteria there is no organised nucleus
65. Assertion Eukaryotic cells have more DNA than prokaryotic cells.
Reason Eukaryotes are more complex than prokaryotes genetically.
66. Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread?
I. Temperature of about 25°C.
II. Temperature of about 5°C.
III. Relative humidity of about 5%.
IV. Relative humidity of about 95%.
V. A shady place.
VI. A brightly illuminated place.
Choose the answer from the following option.
(a) I, IV and V (b) II, IV and V
(c) II, III and VI (d) I, III and V
67. Members of phycomycetes are found in
I. aquatic habitats
II. on decaying wood ‘
III. moist and damp places
IV. as obligate parasites on plants
Choose from the following option.
(a) I and IV
(b) II and III
(c) I, II, III and IV .
(d) None of the above
68. Which one of the following matches is correct?
Column 1 Column II Column III
(a) Phytophthora Aseptate mycelium Basidiomycetes
(b) Alternaria Sexual reproduction absent Deuteromycetes
(c) Mucor Reproduction by conjugation Ascomycetes
(d) Agaricus Parasitic fungus Basidiomycetes
69. Which one of the following shows heterothalism?
(a) Rhizopus
(b) Bacterium
(c) Cycas
(d) Ricinus
70. Which of the following is a cyanophage?
(a) S-13 (b) ∅x174 (c) SV – 40 (d) LPP-1
71. Leghaemoglobin helps in
(a) nitrogen fixation
(b) protecting nitrogenase from 02
(c) destroy bacteria
(d) transport of food in plants
72. ‘Archaebacteria differ from eubacteria in
(a) cell membrane structure
(b) mode of nutrition
(c) cell shape
(d) mode of reproduction
73. Which of the following are likely to be present in deep
sea water?
(a) Eubacteria
(b) Blue-green algae
(c) Saprophytic
(d) Archaebacteria
74. Pigment containing membranous extensions in some
cyanobacteria are
(a) Basal bodies
(b) Pneumatophores
(c) Chromatophores
(d) Heterocysts
75. A good producer of citric acid is
(a) Pseudomonas
(b) Clostridium
(c) Saccharomyces
(d) Aspergillus
76. Protists obtain their food as
(a) photosynthesisers
(b) chemosynthesisers
(c) heterotrophs
(d) Both (a) and (c)
77. Photosynthetic bacteria have
(a) pigment system I
(b) pigment system II
(c) Both (a) and (b)
(d) some other kind of pigments, B890
78. Single celled eukaryotes are included in
(a) Protista
(b) Fungi
(c) Archaea
(d) Monera
Answers :
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