Biological Classification 1000+ MCQ with answer for RRB NTPC

1. Which of the following pigment is present in cyanobacteria?
A. Chlorophyll a
B. Chlorophyll b
C. Chlorophyll c
D. Chlorophyll d
Answer : A

2. 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

3. 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

4. Match the type of protozoans given in column-I with their examples given in column-II and choose the correct option.

Column-I	Column-II
(Type of Protozoans)	(Examples)
A. Amoeboid protozoans	I. Paramecium
B. Ciliated protozoans	II. Plasmodium
C. Flagellated protozoans	III. Amoeba
D. Sporozoans	IV. 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

5. 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

6. 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

7. A fungus contains cells with two nuclei from different genomes. The nuclei do not fuse but divide independently and simultaneously as new cells are formed. This fungus belongs to
A. phycomycetes
B. zygomycetes
C. deuteromycetes
D. basidiomycetes
Answer : D

8. Choose the correct statements (i v) regarding mycoplasma
(i) Mycoplasma has no cell wall.
(ii) Mycoplasma is the smallest living organism.
(iii) Mycoplasma cannot survive without O2.
(iv) Mycoplasma are pathogenic in animals and plants.
(v) A sort of sexual reproduction occurs in bacterium by adopting a primitive DNA transfer from one bacterium to the other.
A. Only (iii)
B. (i), (iii) and (v)
C. (i), (ii), (iv), and (v)
D. All of the above
Answer : C

9. 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

10. 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

11. Which of the following is used extensively in biochemical and genetic work ?
A. Agaricus
B. Alternaria
C. Neurospora
D. Mucor
Answer : C

12. Which of the following statement is/ are correct for bacteria ?
A. They are the members of the kingdom monera.
B. They live in extreme habitats such as hot springs, deserts, snow and deep oceans.
C. They show the most extensive metabolic diversity.
D. All of the above
Answer : D

13. 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

14. Protists are
A. single-celled eukaryotes.
B. multicellular eukaryotes.
C. single-celled prokaryotes.
D. single-celled akaryote.
Answer : A

15. 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

16. 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

17. An X reproduces in such a great numbers that the water may appearred, producing a red tides and ills 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

18. 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

19. Which of the following statement is correct for dinoflagellates flagella ?
A. A single flagellum lies in the transverse groove between the cell plates.
B. A single flagellum lies in the longitudinal groove between the cell plates.
C. Two flagella, one lies longitudinally and the other transversely in a furrow between the wall plates.
D. Flagella are absent.
Answer : C

20. Which group of fungi is commonly known as imperfect fungi ?
A. Phycomycetes
B. Ascomycetes
C. Basidiomycetes
D. Deuteromycetes
Answer : D

21. 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

22. The symbiotic association of fungi and algae is called
A. lichen
B. mycorrhiza
C. rhizome
D. endomycorrhiza
Answer : A

23. 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

24. Which of the following pair is not correctly matched ?
A. Anabaena Cyanobacteria
B. Amoeba Protozoa
C. Gonyaulax Dinoflagellates
D. Albugo Chrysophytes
Answer : D

25. Which of the following class of fungi is being described by the given statements ?
(i) They are found in aquatic habitats and on decaying wood in moist and damp places.
(ii) Mycelium is aseptate and coenocytic.
(iii) Asexual reproduction takes place by zoospores (motile) or by aplanospores (non-motile).
(iv) Some common examples are Mucor, Rhizopus and Albugo.
A. Ascomycetes
B. Phycomycetes
C. Basidiomycetes
D. Deuteromycetes
Answer : B

26. The subunit of capsid is called
A. core
B. nucleotide
C. amino acid
D. capsomere
Answer : D

27. The given characters are seen in which of the following group?
(i) Unicellular, colonial, filamentous, marine or terrestrial forms.
(ii) The colonies are surrounded by a gelatinous sheath.
(iii) Some can fix atmospheric nitrogen in specialized cells called heterocysts.
(iv) They often form blooms in water bodies.
A. Archaebacteria
B. Cyanobacteria
C. Chrysophytes
D. Dinoflagellates
Answer : B

28. Match column I (containing fungus name) with column II (common name) and choose the correct options.

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

29. 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

30. 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

31. 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

32. 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

33. 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

34. Which statement is not correct for viuses ?
A. Viruses are obligate parasites.
B. Viruses can multiply only when they are inside the living cells.
C. Viruses cannot pass through bacterial filters.
D. Viruses are made up of protein and DNA or RNA (never both DNA and RNA).
Answer : C

35. Read the following statements and answer the question given below
(i) They are saprophytic protists.
(ii) Under suitable conditions, they form an aggregation (called plasmodium) which may grow and spread over several feet.
(iii) During unfavourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips.
Which of the following class of protists is being described by the above statements ?
A. Euglenoids
B. Dinoflagellates
C. Slime moulds
D. Protozoans
Answer : C

36. In some viruses, RNA is present instead of DNA indicating that
A. their nucleic acid must combine with host DNA before replication.
B. they cannot replicate.
C. there is no hereditary information.
D. RNA can transfer heredity material.
Answer : D

37. Fungi show asexual reproduction by all of the following kinds of spores except
A. conidia
B. oospores
C. sporangiospores
D. zoospores
Answer : B

38. 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

39. Match column I (Kingdom) with column II (Class) and select the correct options

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

40. 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

41. 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

42. Match the scientists given in column I with their discovery given in column II and choose the correct option.

Column-I	Column-II
(Scientists)	(Discovery)
A. Ernst Mayr	I. Discovered Viroids
B. Whittaker	II. Gave the name virus
C. Pasteur	III. Proposed five kingdom classification
D. Diener	IV. 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

43. 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

44. 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

45. Which of the following kingdom does not have nuclear membrane ?
A. Protista
B. Fungi
C. Monera
D. Plantae
Answer : C

46. How many bacteria are produced in four hours if a bacterium divides once in half an hour ?
A. 8
B. 64
C. 16
D. 256
Answer : D

47. Clamp connection is found in
A. basidiomycetes
B. ascomycetes
C. saccharomycetes
D. haplomycetes
Answer : A

48. Match the terms given in column-I with their examples given in column-II and choose the correct option

Column-I	Column-II
(Terms)	(Examples)
A. Ascus	I. Spirulina
B. Basidium	II. Penicillium
C. Protista	III. Agaricus
D. Cyanobacteria	IV. Euglena
E. Animalia	V. Sponges

A. A II, B III, C IV, D V, E I
B. A I, B II, C III, D V, E IV
C. A II, B V, C III, D I, E IV
D. A II, B III, C IV, D I, E V
Answer : D

49. 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

50. Consider the following statements with respect to characteristic features of the kingdom.
(i) In animalia, the mode of nutrition is autotrophic.
(ii) In monera, the nuclear membrane is present.
(iii) In protista, the cell type is prokaryotic.
(iv) In plantae, the cell wall is present.
Of the above statements, which one is correct ?
A. (i) only
B. (ii) only
C. (iii) only
D. (iv) only
Answer : D