Biological Classification MCQ Solved Paper for NMAT
Thursday 9th of March 2023
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1. Which of the following pair is not correctly matched ?
A. Anabaena Cyanobacteria
B. Amoeba Protozoa
C. Gonyaulax Dinoflagellates
D. Albugo Chrysophytes
Answer : D
A. Anabaena Cyanobacteria
B. Amoeba Protozoa
C. Gonyaulax Dinoflagellates
D. Albugo Chrysophytes
Answer : D
2. Protists are
A. single-celled eukaryotes.
B. multicellular eukaryotes.
C. single-celled prokaryotes.
D. single-celled akaryote.
Answer : A
A. single-celled eukaryotes.
B. multicellular eukaryotes.
C. single-celled prokaryotes.
D. single-celled akaryote.
Answer : A
3. Identify the following figures A, B and C.
A. A – Euglena, B – Paramecium, C – Agaricus
B. A – Euglena, B – Planaria, C – Agaricus
C. A – Planaria, B – Paramecium, C – Agaricus
D. A – Euglena, B – Paramecium, C – Aspergillus
Answer : A
A. A – Euglena, B – Paramecium, C – Agaricus
B. A – Euglena, B – Planaria, C – Agaricus
C. A – Planaria, B – Paramecium, C – Agaricus
D. A – Euglena, B – Paramecium, C – Aspergillus
Answer : A
4. The genetic material of virus includes
A. only RNA.
B. only DNA.
C. RNA and DNA both
D. RNA or DNA i.e. one nucleic acid in a virus.
Answer : D
A. only RNA.
B. only DNA.
C. RNA and DNA both
D. RNA or DNA i.e. one nucleic acid in a virus.
Answer : D
5. Match the class of fungi given in column-I with their common name given in column-II and select the correct option.
A. A II, B I, C IV, D III
B. A II, B IV, C I, D III
C. A IV, B I, C II, D III
D. A IV, B III, C II, D I
Answer : A
| Column-I | Column-II |
|---|---|
| (Class of fungi) | (Common name) |
| A. Phycomycetes | I. Sac fungi |
| B. Ascomycetes | II. Algal fungi |
| C. Basidiomycetes | III. Fungi imperfecti |
| D. Deuteromycetes | IV. Club fungi |
A. A II, B I, C IV, D III
B. A II, B IV, C I, D III
C. A IV, B I, C II, D III
D. A IV, B III, C II, D I
Answer : A
6. Protozons are not included in kingdom animalia because they are
A. mostly asymmetrical.
B. unicellular eukaryotes.
C. heterotrophic in nature.
D. multicellular prokaryotes.
Answer : B
A. mostly asymmetrical.
B. unicellular eukaryotes.
C. heterotrophic in nature.
D. multicellular prokaryotes.
Answer : B
7. Which one of the following is a characteristic feature of chrysophytes?
A. They are parasitic forms which cause diseases in animals.
B. They have a protein rich layer called pellicle.
C. They have indestructible wall layer deposited with silica.
D. They are commonly called dinoflagellates.
Answer : C
A. They are parasitic forms which cause diseases in animals.
B. They have a protein rich layer called pellicle.
C. They have indestructible wall layer deposited with silica.
D. They are commonly called dinoflagellates.
Answer : C
8. Match column I (Kingdom) with column II (Class) and select the correct options
A. A IV, B III, C II, D I
B. A I, B II, C III, D IV
C. A III, B IV, C II, D I
D. A IV, B II, C III, D I
Answer : A
| Column-I | Column-II |
|---|---|
| (Kingdom) | (Class) |
| A. Plantae | I. Archaebacteria |
| B. Fungi | II. Euglenoids |
| C. Protista | III. Phycomycetes |
| D. Monera | IV. Algae |
A. A IV, B III, C II, D I
B. A I, B II, C III, D IV
C. A III, B IV, C II, D I
D. A IV, B II, C III, D I
Answer : A
9. Which of the following pairs comes under the group chrysophytes ?
A. Diatoms and Euglena
B. Euglena and Trypanosoma
C. Diatoms and Desmids
D. Gonyaulax and Desmids
Answer : C
A. Diatoms and Euglena
B. Euglena and Trypanosoma
C. Diatoms and Desmids
D. Gonyaulax and Desmids
Answer : C
10. Which of the following is used extensively in biochemical and genetic work ?
A. Agaricus
B. Alternaria
C. Neurospora
D. Mucor
Answer : C
A. Agaricus
B. Alternaria
C. Neurospora
D. Mucor
Answer : C
11. Which of the following statement(s) is/are correct about class basidiomycetes ?
(i) They are commonly known as imperfect fungi because only the asexual or vegetative phases of these fungi are known.
(ii) They grow in soil, on logs and tree stumps and in living plant bodies as parasites, e.g., rusts and smuts.
(iii) The mycelium is branched and septate.
(iv) Some common members are Agaricus, Ustilago and Puccinia.
A. Only (i)
B. Both (ii) and (iii)
C. (ii), (iii) and (iv)
D. All of these
Answer : C
(i) They are commonly known as imperfect fungi because only the asexual or vegetative phases of these fungi are known.
(ii) They grow in soil, on logs and tree stumps and in living plant bodies as parasites, e.g., rusts and smuts.
(iii) The mycelium is branched and septate.
(iv) Some common members are Agaricus, Ustilago and Puccinia.
A. Only (i)
B. Both (ii) and (iii)
C. (ii), (iii) and (iv)
D. All of these
Answer : C
12. The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as
A. cyanobacteria
B. archaebacteria
C. chemosynthetic autotrophs
D. heterotrophic bacteria
Answer : D
A. cyanobacteria
B. archaebacteria
C. chemosynthetic autotrophs
D. heterotrophic bacteria
Answer : D
13. Fungi are filamentous with the exception of X which is unicellular. Identify X.
A. Yeast
B. Algae
C. Bacteria
D. Lichen
Answer : A
A. Yeast
B. Algae
C. Bacteria
D. Lichen
Answer : A
14. Which one of the following statement is correct for archaea?
A. Archaea resemble eukaryotes in all respects.
B. Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
C. Archaea completely differ from both prokaryotes and eukaryotes.
D. Archaea completely differ from prokaryotes.
Answer : B
A. Archaea resemble eukaryotes in all respects.
B. Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
C. Archaea completely differ from both prokaryotes and eukaryotes.
D. Archaea completely differ from prokaryotes.
Answer : B
15. Which of the following statements regarding cyanobacteria is incorrect?
A. It is also called blue green algae.
B. They are chemosynthetic autotrophs.
C. It forms blooms in polluted water bodies.
D. It is unicellular, colonial or filamentous, marine or terrestrial bacteria.
Answer : B
A. It is also called blue green algae.
B. They are chemosynthetic autotrophs.
C. It forms blooms in polluted water bodies.
D. It is unicellular, colonial or filamentous, marine or terrestrial bacteria.
Answer : B
16. The subunit of capsid is called
A. core
B. nucleotide
C. amino acid
D. capsomere
Answer : D
A. core
B. nucleotide
C. amino acid
D. capsomere
Answer : D
17. Which of the following is an example of amoeboid protozoans ?
A. Trypanosoma
B. Paramecium
C. Gonyaulax
D. Entamoeba
Answer : D
A. Trypanosoma
B. Paramecium
C. Gonyaulax
D. Entamoeba
Answer : D
18. Bacteria and yeast are similar in all the following features except that
A. both are unicellular.
B. both are prokaryotes.
C. both are capable of causing fermentation.
D./strong> both produce spores.
Answer : B
A. both are unicellular.
B. both are prokaryotes.
C. both are capable of causing fermentation.
D./strong> both produce spores.
Answer : B
19. Refer the given figure of bacteria cell and Nostoc and choose the option which shows correct label for the structure marked as A, B, C, D and E ?
A. A – Cell wall, B – Cell membrane, C – Heterocyst, D – DNA, E – Mucilagenous sheath
B. A – Cell wall, B – Cell membrane, C – DNA, D – Heterocyst, E – Mucilagenous sheath
C. A – Mucilagenous sheath, B – Cell membrane, C – DNA, D – Heterocyst, E – Cell wall
D. A – Cell membrane, B – Cell wall, C – DNA, D – Heterocyst, E – Mucilagenous sheath
Answer : B
A. A – Cell wall, B – Cell membrane, C – Heterocyst, D – DNA, E – Mucilagenous sheath
B. A – Cell wall, B – Cell membrane, C – DNA, D – Heterocyst, E – Mucilagenous sheath
C. A – Mucilagenous sheath, B – Cell membrane, C – DNA, D – Heterocyst, E – Cell wall
D. A – Cell membrane, B – Cell wall, C – DNA, D – Heterocyst, E – Mucilagenous sheath
Answer : B
20. Which of the following kingdom does not have nuclear membrane ?
A. Protista
B. Fungi
C. Monera
D. Plantae
Answer : C
A. Protista
B. Fungi
C. Monera
D. Plantae
Answer : C
21. Which of the following are the characters of dinoflagellates?
(i) They are planktonic golden yellow algae with soap box like structure.
(ii) They are marine red biflagellated protista.
(iii) They appear yellow, green, brown, blue and red in colour.
(iv) They are biflagellated organisms with pellicle.
(v) They are saprophytic (or) parasitic unicellular forms.
A. (ii) and (iii)
B. (ii) and (v)
C. (i), (ii) and (iii)
D. (ii), (iv) and (v)
Answer : C
(i) They are planktonic golden yellow algae with soap box like structure.
(ii) They are marine red biflagellated protista.
(iii) They appear yellow, green, brown, blue and red in colour.
(iv) They are biflagellated organisms with pellicle.
(v) They are saprophytic (or) parasitic unicellular forms.
A. (ii) and (iii)
B. (ii) and (v)
C. (i), (ii) and (iii)
D. (ii), (iv) and (v)
Answer : C
22. Match column-I (Characters/feature) with column-II (examples) and choose the correct option.
A. A III; B II; C I; D IV
B. A II; B III; C I; D IV
C. A II; B III; C IV; D I
D. A II; B IV; C III; D I
Answer : C
| Column-I | Column-II |
|---|---|
| (Characters/features) | (Examples) |
| A. Red dinoflagellates | I. Rhizopus |
| B. Unicellular fungi used to | II. Gonyaulax make bread and beer |
| C. Source of antibiotics | III. Yeast |
| D. Bread mould | IV. Penicillium |
A. A III; B II; C I; D IV
B. A II; B III; C I; D IV
C. A II; B III; C IV; D I
D. A II; B IV; C III; D I
Answer : C
23. The figure given below shows the structure of a bacteriophage. Identify its parts labelled as A, B, C and D.
A. A - Tail fibres B - Head C - Sheath D - Collar
B. A - Sheath B - Collar C - Head D - Tail fibres
C. A - Head B - Sheath C - Collar D - Tail fibres
D. A - Collar B - Tail fibres C - Head D - Sheath
Answer : C
A. A - Tail fibres B - Head C - Sheath D - Collar
B. A - Sheath B - Collar C - Head D - Tail fibres
C. A - Head B - Sheath C - Collar D - Tail fibres
D. A - Collar B - Tail fibres C - Head D - Sheath
Answer : C
24. T. O. Diener discovered a new infectious agent that was smaller than viruses and have the following characteristics.
(i) It causes potato spindle tuber disease.
(ii) It has free RNA.
(iii) Molecular weight of RNA is low.
Identify the infections agent.
A. Viruses
B. Viroids
C. Virion
D. Mycoplasma
Answer : B
(i) It causes potato spindle tuber disease.
(ii) It has free RNA.
(iii) Molecular weight of RNA is low.
Identify the infections agent.
A. Viruses
B. Viroids
C. Virion
D. Mycoplasma
Answer : B
25. Bacteria lack alternation of generation because there is
A. neither syngamy nor reduction division.
B. no distinct chromosomes.
C. no conjugation.
D. no exchange of genetic material.
Answer : A
A. neither syngamy nor reduction division.
B. no distinct chromosomes.
C. no conjugation.
D. no exchange of genetic material.
Answer : A
26. The bacteria which oxidize various inorganic substances and use the released energy for their ATP production are called _______________.
A. Archaebacteria
B. Heterotrophic bacteria
C. Photosynthetic autotrophic bacteria
D. Chemosynthetic autotrophic bacteria
Answer : D
A. Archaebacteria
B. Heterotrophic bacteria
C. Photosynthetic autotrophic bacteria
D. Chemosynthetic autotrophic bacteria
Answer : D
27. The given statements are some characters of a particular group of Kingdom protista.
(i) Most of them are fresh water organisms found in standing water.
(ii) They have a protein rich layer (called pellicle) which makes their body flexible.
(iii) They have two flagella, a short and a long one.
(iv) Though they are photosynthetic in the presence of sunlight, but in the absence of sunlight they behave like heterotrophs by predating on other smaller organisms.
Identify the correct group on the basis of these characters.
A. Protozoans
B. Chrysophytes
C. Slime moulds
D. Euglenoids
Answer : D
(i) Most of them are fresh water organisms found in standing water.
(ii) They have a protein rich layer (called pellicle) which makes their body flexible.
(iii) They have two flagella, a short and a long one.
(iv) Though they are photosynthetic in the presence of sunlight, but in the absence of sunlight they behave like heterotrophs by predating on other smaller organisms.
Identify the correct group on the basis of these characters.
A. Protozoans
B. Chrysophytes
C. Slime moulds
D. Euglenoids
Answer : D
28. Which scientist classify plants into trees, shrubs and herbs & animals into two groups having red blood cells and without red blood cells?
A. Aristotle
B. R. H. Whittaker
C. D. J. Ivanowsky
D. W. M. Stanley
Answer : A
A. Aristotle
B. R. H. Whittaker
C. D. J. Ivanowsky
D. W. M. Stanley
Answer : A
29. Read the following statements and answer the question.
(i) Some members are saprophytes or parasites while a large number of them are decomposers of litter and help in mineral cycling.
(ii) They reproduce only by asexual spores known as conidia.
(iii) Mycelium is septate and branched.
(iv) Alternaria, Colletotrichum and Trichoderma are examples of this class.
Which of the following class of fungi is being described by the above statements ?
A. Phycomycetes
B. Deuteromycetes
C. Basidiomycetes
D. Ascomycetes
Answer : B
(i) Some members are saprophytes or parasites while a large number of them are decomposers of litter and help in mineral cycling.
(ii) They reproduce only by asexual spores known as conidia.
(iii) Mycelium is septate and branched.
(iv) Alternaria, Colletotrichum and Trichoderma are examples of this class.
Which of the following class of fungi is being described by the above statements ?
A. Phycomycetes
B. Deuteromycetes
C. Basidiomycetes
D. Ascomycetes
Answer : B
30. A virus can be considered a living organism because it
A. responds to touch stimulus
B. respires
C. reproduces (inside the host)
D. can cause disease
Answer : C
A. responds to touch stimulus
B. respires
C. reproduces (inside the host)
D. can cause disease
Answer : C
31. Which one single organism or the pair of organisms is correctly assigned to its taxonomic group?
A. Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.
B. Lichen is a composite organism formed from the symbiotic association of an alga and a protozoan.
C. Yeast used in making bread and beer is a fungus.
D. Nostoc and Anabaena are examples of protista.
Answer : C
A. Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.
B. Lichen is a composite organism formed from the symbiotic association of an alga and a protozoan.
C. Yeast used in making bread and beer is a fungus.
D. Nostoc and Anabaena are examples of protista.
Answer : C
32. Ustilago causes plant diseases (called smuts) because
A. they parasitize on cereals.
B. they lack mycelium.
C. they develop sooty masses of spores.
D. their affected parts becomes completely black.
Answer : D
A. they parasitize on cereals.
B. they lack mycelium.
C. they develop sooty masses of spores.
D. their affected parts becomes completely black.
Answer : D
33. Mycorrhizae are useful for plants because they
A. fix atmospheric nitrogen.
B. enhance absorption of nutrients from the soil.
C. kill insects and pathogen. D. provide resistance against abiotic stresses.
Answer : B
A. fix atmospheric nitrogen.
B. enhance absorption of nutrients from the soil.
C. kill insects and pathogen. D. provide resistance against abiotic stresses.
Answer : B
34. Which of the following statement is incorrect ?
A. TMV has a double-stranded RNA molecule.
B. Most plant viruses are RNA viruses.
C. The bacteriophage has a double-stranded DNA molecule.
D. Most animal viruses are DNA viruses.
Answer : A
A. TMV has a double-stranded RNA molecule.
B. Most plant viruses are RNA viruses.
C. The bacteriophage has a double-stranded DNA molecule.
D. Most animal viruses are DNA viruses.
Answer : A
35. Yeast is not included in protozoans but in fungi because
A. it has no chlorophyll.
B. some fungal hyphae grow in such a way that they give the appearance of pseudomycelium.
C. it has eukaryotic organization.
D. cell wall is made up of cellulose and reserve food material is starch.
Answer : B
A. it has no chlorophyll.
B. some fungal hyphae grow in such a way that they give the appearance of pseudomycelium.
C. it has eukaryotic organization.
D. cell wall is made up of cellulose and reserve food material is starch.
Answer : B
36. Read the given statements and answer the question.
(i) It includes unicellular as well as multicellular fungi.
(ii) In multicellular forms hyphae are branched and septate.
(iii) Conidiophore produces conidia (spores) exogenously in chain.
(iv) Sexual spores are ascospores produced endogenously in chain.
(v) Fruiting body is called ascocarp.
Identify the correct class of fungi which have all the given characteristics.
A. Phycomycetes
B. Sac fungi
C. Club fungi
D. Fungi imperfecti
Answer : B
(i) It includes unicellular as well as multicellular fungi.
(ii) In multicellular forms hyphae are branched and septate.
(iii) Conidiophore produces conidia (spores) exogenously in chain.
(iv) Sexual spores are ascospores produced endogenously in chain.
(v) Fruiting body is called ascocarp.
Identify the correct class of fungi which have all the given characteristics.
A. Phycomycetes
B. Sac fungi
C. Club fungi
D. Fungi imperfecti
Answer : B
37. Which of the following statement is not correct for methanogens?
A. They are archaebacteria.
B. They live in marshy areas.
C. Methane is their preferred carbon source.
D. They are present in guts of several ruminant animals (cow, buffaloes) and produce biogas (CH4) from the dung of these animals.
Answer : C
A. They are archaebacteria.
B. They live in marshy areas.
C. Methane is their preferred carbon source.
D. They are present in guts of several ruminant animals (cow, buffaloes) and produce biogas (CH4) from the dung of these animals.
Answer : C
38. Which class of fungi lacks sex organs but the process of plasmogamy is brought about by fusion of two vegetative or somatic cells of different strains or genotypes?
A. Sac fungi
B. Bracket fungi
C. Imperfect fungi
D. Phycomycetes
Answer : B
A. Sac fungi
B. Bracket fungi
C. Imperfect fungi
D. Phycomycetes
Answer : B
39. Bacteria were regarded to be plants because
A. some of them are green in colour.
B. they are present every where.
C. some of them cannot move.
D. they have a rigid cell wall.
Answer : D
A. some of them are green in colour.
B. they are present every where.
C. some of them cannot move.
D. they have a rigid cell wall.
Answer : D
40. An X reproduces in such a great numbers that the water may appearred, producing a red tides and kills large marine animals like Z. X belongs to Y. Identify X, Y and Z.
A. X - Gonyaulax ; Y - Dinoflagellates; Z - Fishes
B. X - Paramecium ; Y - Protozoa ; Z - Crocodiles
C. X - Trypanosoma ; Y - Protozoa ; Z - Frogs
D. X - Plasmodium ; Y - Euglenoids ; Z - Oysters
Answer : A
A. X - Gonyaulax ; Y - Dinoflagellates; Z - Fishes
B. X - Paramecium ; Y - Protozoa ; Z - Crocodiles
C. X - Trypanosoma ; Y - Protozoa ; Z - Frogs
D. X - Plasmodium ; Y - Euglenoids ; Z - Oysters
Answer : A
41. Match column I (containing fungus name) with column II (common name) and choose the correct options.
A. A I, B II, C III, D IV
B. A II, B III, C IV, D I
C. A III, B IV, C I, D II
D. A IV, B III, C II, D I
Answer : D
| Column-I | Column-II |
|---|---|
| (Fungus name) | (Commonly called) |
| A. Puccinia | I. Yeast |
| B. Ustilago | II. Mushroom |
| C. Agaricus | III. Smut fungus |
| D. Saccharomyces | IV. Rust fungus |
A. A I, B II, C III, D IV
B. A II, B III, C IV, D I
C. A III, B IV, C I, D II
D. A IV, B III, C II, D I
Answer : D
42. The given figure shows the structure of filamentous blue green algae, Nostoc with a structure marked as X. Select the option which shows the correct identification of the X with its feature.
A. Spores - Reproduction
B. Heterocysts - Nitrogen fixation
C. Pellicle - Recycling of nutrition
D. Mucilaginous sheath - Photosynthesis
Answer : B
A. Spores - Reproduction
B. Heterocysts - Nitrogen fixation
C. Pellicle - Recycling of nutrition
D. Mucilaginous sheath - Photosynthesis
Answer : B
43. Bacteria are found to be primitive organisms because they
A. are small, microscopic which are not seen with naked eye.
B. cause serious diseases to human being, domesticated animals and crop plants.
C. produce endospores which are very resistant to adverse conditions.
D. possess incipient nucleus and show amitotic division.
Answer : D
A. are small, microscopic which are not seen with naked eye.
B. cause serious diseases to human being, domesticated animals and crop plants.
C. produce endospores which are very resistant to adverse conditions.
D. possess incipient nucleus and show amitotic division.
Answer : D
44. Plasmogamy is the fusion of
A. two haploid cells including their nuclei.
B. two haploid cells without nuclear fusion.
C. sperm and egg.
D. sperm and two polar nuclei.
Answer : B
A. two haploid cells including their nuclei.
B. two haploid cells without nuclear fusion.
C. sperm and egg.
D. sperm and two polar nuclei.
Answer : B
45. Which of the following pigment is present in cyanobacteria?
A. Chlorophyll a
B. Chlorophyll b
C. Chlorophyll c
D. Chlorophyll d
Answer : A
A. Chlorophyll a
B. Chlorophyll b
C. Chlorophyll c
D. Chlorophyll d
Answer : A
46. Select the correct match from the given option.
A. Occurrence of dikaryotic stage - ascomycetes and basidiomycetes.
B. Saprophytes - They are autotrophic and absorb soluble organic matter from dead substrates.
C. Vegetative mean of reproduction in fungi - fragmentation, budding and sporangiophores.
D. Steps involved in asexual cycle of fungi - plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
Answer : A
A. Occurrence of dikaryotic stage - ascomycetes and basidiomycetes.
B. Saprophytes - They are autotrophic and absorb soluble organic matter from dead substrates.
C. Vegetative mean of reproduction in fungi - fragmentation, budding and sporangiophores.
D. Steps involved in asexual cycle of fungi - plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
Answer : A
47. Which of the following is a parasitic fungi on the mustard plant ?
A. Albugo
B. Puccinia
C. Yeast
D. Ustilago
Answer : A
A. Albugo
B. Puccinia
C. Yeast
D. Ustilago
Answer : A
48. Which of the following statement(s) is/are correct ?
(i) Reproduction in fungi can take place by vegetative means fragmentation, fission and budding.
(ii) Fusion of two nuclei is called plasmogamy.
(iii) Fusion of protoplasms between two motile or nonmotile gametes is called karyogamy.
(iv) Meiosis in zygote results in diploid spores.
A. Only (i)
B. Both (ii) and (iii)
C. (ii), (iii) and (iv)
D. All of these
Answer : A
(i) Reproduction in fungi can take place by vegetative means fragmentation, fission and budding.
(ii) Fusion of two nuclei is called plasmogamy.
(iii) Fusion of protoplasms between two motile or nonmotile gametes is called karyogamy.
(iv) Meiosis in zygote results in diploid spores.
A. Only (i)
B. Both (ii) and (iii)
C. (ii), (iii) and (iv)
D. All of these
Answer : A
49. Choose the correct names of the different bacteria given below according to their shapes.
A. A – Cocci, B – Bacilli, C – Spirilla, D – Vibrio
B. A – Bacilli, B – Cocci, C – Spirilla, D – Vibrio
C. A – Spirilla, B – Bacilli C – Cocci, D – Vibrio
D. A – Spirilla, B – Vibrio, C – Cocci, D – Bacilli
Answer : A
A. A – Cocci, B – Bacilli, C – Spirilla, D – Vibrio
B. A – Bacilli, B – Cocci, C – Spirilla, D – Vibrio
C. A – Spirilla, B – Bacilli C – Cocci, D – Vibrio
D. A – Spirilla, B – Vibrio, C – Cocci, D – Bacilli
Answer : A
50. When a moist bread is kept exposed in air, it becomes mouldy and black because
A. spores are present in the water.
B. spores are present in the bread.
C. spores are present in the air.
D. the bread decomposes.
Answer : B
A. spores are present in the water.
B. spores are present in the bread.
C. spores are present in the air.
D. the bread decomposes.
Answer : B
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