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1000+ Biological Classification Multiple Choice Question Answer [Solved]

Thursday 9th of March 2023

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1. Match the characters given in column I with their examples given in column II.
Column IColumn II
A. Long slender thread(i) Lichen like structures
B. Association of fungi with(ii) Mycorrhiza roots of higher plants
C. Parasitic fungi on mustard(iii) Neurospora
D. Fungi extensively used in(iv) Albugo biochemical and genetic work
E. An association in which(v) Hyphae algal component is called phycobiont
A. A-(v) B-(ii) C-(iv) D-(iii) E-(i)
B. A-(iii) B-(i) C-(iv) D-(ii) E-(v)
C. A-(ii) B-(i) C-(iii) D-(v) E-(iv)
D. A-(iii) B-(ii) C-(iv) D-(i) E-(v)
Answer : A
2. 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
3. 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
4. Which of the following processes involved in the reproduction of protists ?
A. Binary fission and budding
B. Cell fusion and zygote formation
C. Spore formation and cyst formation
D. All of the above
Answer : D
5. 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
6. Identify the basis of classification of fungi into phycomycetes, ascomycetes, basidiomycetes and deuteromycetes.
i. Fruiting bodies
ii. Nature of habitat
iii. Morphology of mycelium
iv. Mode of spore formation
A. i & ii only
B. ii & iii only
C. i, ii, & iv only
D. All of these
Answer : C
7. 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
8. How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosomes, Porphyra, Wolffia
A. Four
B. Five
C. Six
D. Three
Answer : C
9. Which of the following pair is not correctly matched ?
A. Anabaena Cyanobacteria
B. Amoeba Protozoa
C. Gonyaulax Dinoflagellates
D. Albugo Chrysophytes
Answer : D
10. Which of the following kingdom does not have nuclear membrane ?
A. Protista
B. Fungi
C. Monera
D. Plantae
Answer : C
11. 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
12. Which of the following is a parasitic fungi on the mustard plant ?
A. Albugo
B. Puccinia
C. Yeast
D. Ustilago
Answer : A
13. 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
14. Which of the following pair is correctly matched ?
A. Fungi Saprophytic parasitic mode of nutrition.
B. Monera Nuclear membrane is present.
C. Plantae Cell wall is made up of cellulose.
D. Animalia Cell wall is absent.
Answer : B
15. 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
16. Which of the following characteristic(s) is used by Whittaker for the classification of organisms ?
A. Mode of nutrition
B. Thallus organisation
C. Phylogenetic relationships
D. All of the above
Answer : D
17. The subunit of capsid is called
A. core
B. nucleotide
C. amino acid
D. capsomere
Answer : D
18. Assume that two normal hyphal cells of different fungal mating types unite. After a period of time, the cell between these cells will dissolve producing a
A. mycelium
B. fruiting body
C. zygote
D. dikaryotic cell, which is also heterokaryotic
Answer : D
19. Which of the following is used extensively in biochemical and genetic work ?
A. Agaricus
B. Alternaria
C. Neurospora
D. Mucor
Answer : C
20. Match column I with column II and choose the correct option.
Column IColumn II
A. Mycoplasma(i) Nitrogen fixing cells
B. Decomposers(ii) Blue green algae
C. Methanogens(iii) Production of methane
D. Heterocysts(iv) Most abundant heterotrophs
E. Cyanobacteria(v) Pathogenic in plants and animals
A. A-(i) B-(ii) C-(iii) D-(iv) E-(v)
B. A-(iii) B-(v) C-(ii) D-(iv) E-(i)
C. A-(iii) B-(i) C-(v) D-(ii) E-(iv)
D. A-(v) B-(iv) C-(iii) D-(i) E-(ii)
Answer : D
21. Which of the following statement is correct for both bluegreen algae and bacteria ?
A. Both show anaerobic respiration.
B. Both have chlorophyll pigment.
C. Both are devoid of true nucleus.
D. None of the above
Answer : C
22. 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
23. Which of the following group of kingdom protista is being described by the statements given below ?
(i) This group includes diatoms and golden algae.
(ii) They are microscopic and float passively in water currents (plankton).
(iii) Most of them are photosynthetic.
(iv) They have deposits in their habitat; this accumulation over billion of years is referred to as diatomaceous earth.
A. Dinoflagellates
B. Chrysophytes
C. Euglenoids
D. Slime moulds
Answer : B
24. 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
25. 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
26. A specimen of fungus is brought by a student for identification. Upon close examination, he discovered that its hyphae are completely septate and it has gills on the underside of the pileus. To which fungal group does it most likely belong ?
A. Basidiomycetes
B. Zygomycetes
C. Ascomycetes
D. Chytrids
Answer : A
27. 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
28. 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 ? 
img1
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
29. Match column I (containing fungus name) with column II (common name) and choose the correct options.
Column-IColumn-II
(Fungus name)(Commonly called)
A. PucciniaI. Yeast
B. UstilagoII. Mushroom
C. AgaricusIII. Smut fungus
D. SaccharomycesIV. 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
30. Protists are
A. single-celled eukaryotes.
B. multicellular eukaryotes.
C. single-celled prokaryotes.
D. single-celled akaryote.
Answer : A
31. Which of the following is smallest living cell and can live without oxygen ?
A. Mycoplasma
B. Mycorrhiza
C. Euglena
D. Trypanosoma
Answer : A
32. Protista includes
A. unicellular eukaryotes with well-defined nucleus only.
B. unicellular prokaryotes with membrane bound organelles.
C. unicellular eukaryotes with well-defined nucleus and membrane bound organelles.
D. both unicellular and multicellular eukaryotes with welldefined nucleus and membrane bound organelles.
Answer : C
33. Which of the following is/are example(s) of deuteromycetes?
A. Alternaria
B. Colletotrichum
C. Trichoderma
D. All of these
Answer : D
34. Match the scientists given in column I with their discovery given in column II and choose the correct option.
Column-IColumn-II
(Scientists)(Discovery)
A. Ernst MayrI. Discovered Viroids
B. WhittakerII. Gave the name virus
C. PasteurIII. Proposed five kingdom classification
D. DienerIV. Darwin of the 20th century
A. A IV, B III, C II, D I
B. A III, B IV, C II, D I
C. A II, B III, C IV, D I
D. A I, B II, C III, D IV
Answer : A
35. Which of the following is the correct sequence of three steps in the sexual cycle of fungi?
A. Mitosis -> Meiosis -> Fertilization
B. Plasmogamy -> Karyogamy -> Meiosis
C. Mitosis -> Plasmogamy -> Karyogamy
D. Karyogamy -> Plasmogamy -> Meiosis
Answer : B
36. 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.
img5
A. Spores - Reproduction
B. Heterocysts - Nitrogen fixation
C. Pellicle - Recycling of nutrition
D. Mucilaginous sheath - Photosynthesis
Answer : B
37. Why food can be kept for a longer time in cold house than in normal conditions ? Because,
A. insect cannot enter.
B. bacterial multiplication stops.
C. bacterial multiplication is reduced.
D. there is plasmolysis at low temperature.
Answer : C
38. 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
39. Match the type of protozoans given in column-I with their examples given in column-II and choose the correct option.
Column-IColumn-II
(Type of Protozoans)(Examples)
A. Amoeboid protozoansI. Paramecium
B. Ciliated protozoansII. Plasmodium
C. Flagellated protozoansIII. Amoeba
D. SporozoansIV. Trypanosoma
A. A I; B III; C IV; D II
B. A III; B I; C II; D IV
C. A III; B I; C IV; D II
D. A III; B IV; C I; D II
Answer : C
40. 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
41. 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
42. Which of the following is an example of amoeboid protozoans ?
A. Trypanosoma
B. Paramecium
C. Gonyaulax
D. Entamoeba
Answer : D
43. 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. both produce spores.
Answer : B
44. Match the class of fungi given in column I with their examples given in column II and choose the correct option
Column-IColumn-II
(Class of fungi)(Examples)
A. AscomycetesI. Rhizopus
B. BasidiomycetesII. Penicillium
C. DeuteromycetesIII. Ustilago
D. PhycomycetesIV. Alternaria
A. A IV, B III, C I, D II
B. A II, B III, C IV, D I
C. A IV, B I, C II, D III
D. A III, B IV, C II, D I
Answer : B
45. Chemosynthetic autotrophic bacteria are named so because
A. they oxidize various inorganic substances such as nitrates, nitrites and ammonia and use the released energy for their ATP production.
B. they oxidize various organic substances and use the released energy for their ATP production.
C. both (a) and (b)
D. none of these
Answer : A
46. 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
47. 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
48. 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
49. 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
50. 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 fexible.
(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
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