Chapter 2 - Biological Classification | Biological Classification Quiz Questions

Practice Questions

Kingdom Classification

1. Who was the first to attempt a more scientific basis of classification?

(a) Linnaeus

(b) Aristotle

(d) Bentham and Hooker

2. Aristotle classified plants in herbs, shrubs and trees on the basis of

(a) Anatomical feature

(b) Morphological characters

(d) Biochemical characters

3. In how many groups did Aristotle divide the animals on the basis of presence/absence of RBC?

(a) 1

(b) 2

(d) 4

4. Two kingdom classification does not distinguish between

(a) Eukaryote and prokaryote

(b) Unicellular and multi-cellular organisms

(d) All the above

5. In which year Whittaker proposed the five kingdom classification?

(a) 1960

(b) 1959

(d) 1979

6. Whittaker’s kingdom are

(a) Plantae and Animalia

(b) Monera and Protista

(d) All of these

7. How many main criteria were used by Whittaker for classification?

(a) 1

(b) 3

(d) 5

8. What is the criteria used by Whittaker for classification?

(1) Cell structure (2) Thallus organization

(3) Mode of nutrition (4) Reproduction

(5) Phylogenetic relationship

(6) Biochemical difference

(7) Physiological character

(a) All except (5) and (6)

(b) All except (5) and (7)

(d) All except (3) and (4)

9. In earlier classification (like two kingdoms), the following are included in plant

(1) Bacteria, blue green algae, fungus

(2) Mosses and fern

(3) Gymnosperms and angiosperm

(a) (1) only

(b) (2) and (3) only

(d) All of these

10. What is common to bacteria, mosses and fungus?

(a) It is a mode of nutrition

(b) Presence of cell wall

(d) Body organization

11. All prokaryotic groups are put under _________ kingdom

(a) Monera

(b) Plantae

(d) Protista

12. Kingdom protista contains

(a) Blue green algae

(b) Fungi

(d) All of these

13. Chlamydomonas, chlorella, paramecium and amoeba are placed in which kingdom of Whittaker’s classification?

(a) Monera

(b) Plantae

(d) Protista

14. Phylogeny refers to

(a) Morphology

(b) Physiology

(d) Evolutionary relationship

15. Kingdom monera contains

(a) Bacteria

(b) Dinoflagellate

(d) Euglenoid

16. Most abundant microorganism are

(a) bacteria

(b) virus

(d) paramecium

17. Which of the following is incorrect about bacteria?

(A) It is grouped under five categories on the basis of shape.

(B) It can live in hot spring, deep ocean, snow and desert areas.

(D) It is composed of simple behaviour and complex structure.

(a) (A) and (B) only

(b) (A) and (D) only

(d) (C) and (D) only

18. Most extensive metabolic diversity is found in

(a) Protozoans

(b) Amphibian

(d) Fungi

19. Most of the bacteria are

(a) Chemo-autotrophs

(b) Photo-autotrophs

(d) Holozoic

20. Match the column:

Column I Column II

A. Salty area 1. Thermoacidophile

B. Hot spring 2. Methanogen

C. Marshy area 3. Halophiles

(a) A‒3, B‒1, C‒2

(b) A‒1, B‒2, C‒3

(d) A‒2, B‒3, C‒1

21. Archaebacteria can live in some of the most harsh habitats because of

(a) Presence of mesosome

(b) High power of multiplication

(d) All of these

22. Following are present in gut of cows and buffaloes and is responsible for the production of

methane from the dung of these animals

(a) Methanogen (b) Thermoacidophiles

23. Motile bacteria possess

(a) Cilia (b) Flagella

24. Which of the following statements is true about cyanobacteria?

(a) It is found in fresh water only.

(b) It may be unicellular, colonial or filamentous.

(d) Colonies are not surrounded by gelatinous sheath.

25. Specialized cell of nostoc and anabaena fix nitrogen are known as

(a) Cyst (b) Heterocyst

26. Find out the total number of false statements:

A. Cyanobacteria have chlorophyll ‘a’ like green plants.

B. Bacteria which oxidizes various inorganic substance such as nitrates and ammonia and

uses the released energy for ATP production are chemosynthesis autotrophic bacteria.

C. Heterotrophic bacteria are less in abundance in nature.

D. Majority of heterotrophic bacteria are decomposers.

E. Chemosynthetic autotrophic bacteria play an important role in recycling of nutrients like

nitrogen, phosphorus iron and sulphur.

(a) 1 (b) 2 (c) 3 (d) 4

27. Heterotrophic bacteria helps in

(a) Curding of milk (b) Production of antibiotic

28. Select the total number of disease from the following caused by bacteria:

Mumps, Smallpox, Citrus canker, Cholera, Typhoid, Tetanus, Sleeping sickness, Malaria

(a) 2 (b) 4 (c) 5 (d) 6

29. Which one is correct about reproduction in bacteria?

(a) Mainly by binary fission

(b) Spores are formed under unfavorable condition

(d) All of these

30. Following features belong to

A. Complete lacking of cell wall

B. Anaerobic

C. Smallest living cell

D. Many of them are pathogenic to plant and animals

(a) Chrysophytes (b) Prions

31. Which of the following is incorrect about protista?

(a) All are single cell eukaryotes

(b) Some have flagella or cilia

(d) Members of protista are primarily terrestrial

32. Kingdom protista include

(a) Chrysophyte (b) Dinoflagellate (c) Euglenoids (d) All of these

33. Which kingdom of Whittaker are not well-defined?

(a) Monera (b) Protista (c) Fungi (d) Animalia

34. Which of the following is correct about chrysophytes?

I. Found in fresh and marine water II. Microscopic plankton

III. Cell walls are embedded with CaCO3 IV. Most of them are photosynthetic

(a) I and III only (b) I, III and IV only (c) I, II and IV only (d) I and IV only

35. Chief producers in ocean are

(a) Euglenoids (b) Dinoflagellate (c) BGA (d) Chrysophytes

36. Chrysophytes include

(a) Diatoms (b) Golden algae (c) Desmids (d) All of these

37. Diatomaceous earth is used in

(a) Polishing (b) Filteration of oils

38. In _______ cell wall forms two thin overlapping shells which fit together as in a soap box.

(a) Dinoflagellates (b) Diatoms (c) Euglenoids (d) None of these

39. Mostly marine, photosynthetic and biflagellate organisms are

(a) Diatoms (b) Desmids (c) Dinoflagellates (d) Euglenoids

40. The following features belong to

I. Appear yellow, green, brown, blue and red depending on the pigment in cell.

II. Stiff cellulose plate forms cell wall.

III. One longitudiual and one transverse flagella present.

IV. Photosynthetic

(a) Diatoms (b) Desmids (c) Dinoflagellates (d) Euglenoids

41. Red tide is because of

(a) Desmids (b) Gonyaulax (c) Euglena (d) Red algae

42. Which of the following is true about gonyaulax?

(a) Release toxin (b) Slow multiplication causing red tide

43. Habitat of euglenoids is

(a) Fresh river water (b) Fresh stagnant water

44. Mode of nutrition in euglenoids is

(a) Autotropic (b) Heterotropic (c) Symbiotic (d) Mixotropic

45. Characteristic feature of euglenoids are

A. Presence of cell wall B. Presence of two flagella

C. Photosynthetic in presence of sunlight D. Presence of pellicle on their cell

(a) A and D only (b) B and D only

46. Euglenoids have flexible body because of

(a) Cellulosic wall (b) Protein rich pellicle

47. Pigments of euglenoids are identical to

(a) Bacteria (b) Diatoms (c) Dinoflagellates (d) Higher plants

48. Euglena posses all except

(a) Pellicle (b) Two equal flagella

49. Character belongs to slime moulds

A. Saprophytes

B. Forms plasmodium under favourable condition

C. Spores posses true walls

D. Spores are dispersed by water

E. Body moves along decaying twings and leaves engulfing organic matter.

(a) All except E (b) All except D

50. Which protist are believed to be the relatives of animals?

(a) Slime moulds (b) Dinoflagellates (c) Protozoans (d) Diatoms

51. Protozoans are

A. Hetrotrops

B. Parasites or predators

C. Protist

D. Belived to be primitive relative of animals

(a) A and B only (b) B and C only (c) D and A only (d) All of these

52. Amoeboid protozoans

(a) Live in fresh water, sea water or moist soil

(b) Captures prey by putting pseudopodia

(d) All of the above

53. False feet is the characteristic of which protozoan?

(a) Sporozoan (b) Ciliated protozoan

54. Sleeping sickness is caused by

(a) Plasmodium (b) Paramoecium (c) Trypanosoma (d) Entamoeba

55. The protist which possess flagella is

(a) Paramoecium (b) Plasmodium (c) Trypanosoma (d) Entamoeba

56. Ciliated protozoan possess

(a) Thousands of cilia (b) Gullet that opens outsides to cell

57. Sporozoans possesss

(a) Spore like stage in life cycle (b) They are infectious

58. Select the correct statement from the following for kingdom fungi

A. They are heterotrophic.

B. They show less diversity in morphology and habitat.

C. Yeast is an unicellular fungus.

D. They prefer to grow in warm and humid places.

(a) A and D only (b) C and D only (c) A, C and D only (d) A and B only

59. Which of the following are example of fungus?

(a) Toadstool (b) Puccinia (c) Yeast (d) All of these

60. Which of the following pairs belongs to the same kingdom?

(a) Mycoplasma and Euglena (b) Golden algae and Green algae

61. Refrigeration prevents food from spoilage by

(a) Fungus (b) Bacteria (c) Both (d) None of these

62. Which is not a correct matching?

(a) Rust → Puccinia (b) Yeast → Bread and beer

63. The following features belongs to

A. Body consist of long, slender thread-like structures called hyphae.

B. Cell wall consist of chitin.

C. Cosmopolitan

(a) Ciliated protozoans (b) Slime moulds

64. If hyphae are continuous tube filled with multinucleated cytoplasm it is known as

(a) Septate hyphae (b) Coenocytic hyphae

65. Select the correct matching:

A. Fungi depend on dead substrate ‒ Saprophytic

B. Fungi depend on living plants and animals ‒ Parasite

C. Fungi as symbiont with algae ‒ Lichens

D. Fungi as symbiont with root of higher plant ‒ Mycorrhazia

(a) A and B only (b) B and C only (c) C and D only (d) All of these

66. Vegetative reproduction in fungus takes place by

(a) Fragmentation (b) Fission (c) Budding (d) All of these

67. Asexual reproduction in fungus occurs by spores known as

(a) Conidia (b) Sporangiospores

68. Sexual reproduction in fungus is by

(a) Oospores (b) Ascospores

69. Sexual reproduction in fungus occurs in the following sequential event. Arrange them properly.

A. Fusion of two nuclei called karyogamy.

B. Fusion of protoplasm between two motile or non-motile gametes.

C. Meiosis in zygote resulting in haploid spores.

(a) A → B → C (b) B → A → C (c) C → B → A (d) C → A → B

70. Dikaryon and dikaryophase is seen in the case of

(a) Ascomycetes (b) Basidiomycetes

71. The kingdom fungi is divided into various classes on the basis of

(a) Morphology of mycelium (b) Mode of spore formation

72. During sexual reproduction in fungus

(a) Hyphae of same class come together and fuse.

(b) Hyphae of same genus come together and fuse.

(d) Hyphae of compatible mating type come together and fuse.

73. Habitats of phycomycetes are

(a) Aquatic (b) Decaying wood in moist and damp place

74. Endogenously produced spores are found in all except

(a) Mushroom (b) Mucor

75. The following features belong to class

A. Asexual reproduction by zoospores or aplanospores.

B. Fusion of gametes may be isogamous, anisogamous or oogamous.

C. Mycelium is aseptate and coenocytic.

D. Spores are endogenously produced in sporangium.

(a) Ascomycetes (b) Deuteromycetes

76. The following fungus belongs to class ascomycetes (count the total number).

Rhizopus, Penicillium, Yeast, Mucor, Agaricus, Puccinia, Albugo, Claviceps, Neurospora,

Alternaria, Trichoderma, Aspergillus, Ustilago, Morels, Buffles, Colletotrichum, Toadstool

(a) 5 (b) 7 (c) 9 (d) 10

77. Ascomycetes are mostly

(a) Acellular (b) Unicellular (c) Multicellular (d) All of these

78. Unicellular ascomycetes is

(a) Penicillium (b) Alternaria

79. The following features belongs to class

A. Mycelium branched and septate.

B. Asexual spores conidia produced exogenously.

C. Sexual spores produced endogenously.

D. Many members of this class are edible.

(a) Ascomycetes (b) Phycomycetes (c) Basidiomycetes (d) Deuteromycetes

80. Which of the following is extensively used in biochemical and genetic work?

(a) Aspergillus (b) Claviceps (c) Neurospora (d) Penicillium

81. The commonly known form of basidiomycetes are

(a) Mushrooms (b) Bracket fungi (c) puffballs (d) all

82. The following characteristics are of which of the given fungi?

A. Mycelium branched and septate.

B. Asexual spores are generally not found.

C. Vegetative reproduction by fragmentation is common.

D. Sex organs are absent but plasmogamy is by fusion of two somatic cells of different

strains or genotype.

(a) Phycomycetes (b) Basidiomycetes (c) Deuteromycetes (d) Ascomycetes

83. Karyogamy and meiosis occurs in basidium produces ______ basidiospores.

(a) 1 (b) 2 (c) 3 (d) 4

84. Basidiospores are produced on basidium

(a) Endogenously (b) Exogenously (c) Both (a) and (b) (d) None of these

85. Find out the correct matching:

(a) Ustilago–Smut (b) Puccinia–Rust

86. Which of the following fungi only reproduce by asexual spores conidia?

(a) Alternaria (b) Colletotrichum (c) Trichoderma (d) All of these

87. Deuteromycetes are known as imperfect fungi because

(a) Only sexual phase is found.

(b) Only asexual or vegetative phase are known.

(d) Reproduction in these fungi is absent.

88. Many members of _______ class are decomposers of litter and help in mineral cycling.

(a) Ascomycetes (b) Deuteromycetes

89. The following features belongs to

A. Mycelium septate and branched.

B. Some members are saprophytes or parasites.

C. Reproduce only by conidia.

(a) Ascomycetes (b) Deuteromycetes (c) Basidiomycetes (d) Phycomycetes

90. Which of the following are examples of insectivorous plants?

(a) Bladderwort (b) Venus fly trap (c) Cuscuta (d) Both (a) and (b)

91. Kingdom plantae include

(a) Algae and bryophytes (b) Pteridophytes and gymnosperms

92. Plant cells have all except

(a) Chloroplast (b) Cellulosic cell wall

93. Alternation of generation is seen in all except

(a) Fucus (b) Sphagnum (c) Equisetum (d) Alternaria

94. Life cycle in plant has generally two distinct phase the ______ sporophytic and the ______

gametophytic that alternate with each other. This phenomenon is called as alternation of

generation.

(a) diploid, diploid (b) diploid, haploid

95. Select from the following the total number of features belonging to animal kingdom.

1. Multicellular, heterotrophic.

2. Most of them capable of locomotion.

3. Have definite shape and size.

4. Digestion of food in internal cavity.

5. Holozoic mode of nutrition.

6. Stored food reserve as glycogen or fat.

7. Higher forms shows sensory and

neuromotor mechanism.

8. Some members are autotrophic.

9. Presence of cellulose cell wall.

10. Sexual reproduction generally by

copulation of male and female.

(a) 6 (b) 7 (c) 8 (d) 10

Viruses,Viroids and Lichens

96. In five kingdom classification of Whittaker, some acellular organisms are not included, they are

(a) Virus (b) Viroids (c) Lichens (d) Both (a) and (b)

97. Virus is

(a) Completely non-living

(b) Inert crystalline structure outside the living cell

(d) One of Whittaker’s classification

98. ‘Virus’, the name means

(a) Venom or poisonous fluid

(b) Acellular form

(d) The connecting link between living and non-living

99. ‘Virus’ , the name was given by

(a) Ivanowsky (b) Pasteur (c) Whittaker (d) Beijerinck

100. Contagium vivum fluidum (infections living fluid) name given to fluid extract from infected

tobacco plant was given by

(a) Ivanowsky (b) Pasteur (c) Whittaker (d) Beijerinek

101. Viruses are

(a) Inert outside their specific host cell (b) Obligate parasite

102. Who showed that virus can be crystallized out?

(a) Ivanowsky (b) Beijerinck

103. Virus contains

(a) Protein (b) DNA

(d) RNA (d) (a) and either (b) or (c)

104. Virus infected plants generally have

(a) Single stranded DNA (b) Double stranded DNA

105. Viruses which infect animals have

(a) Single stranded RNA (b) Double stranded RNA

106. Bacteriophage generally have

(a) Single stranded RNA (b) Double stranded RNA

107. Capsomeres may be arranged in

(a) Helical (b) Polyhedral (c) Ellipsoid (d) Either (a) or (b)

108. In virus infected plants the following symptoms can be observed

(a) Mosaic formation and stunted growth (b) Leaf rolling and curling

109. Select the total number of diseases from the following which can be caused by virus in plant or

animals.

Mumps, Small pox, Rust, Smut, Herpes, Influenza, Potato spindle tuber, Red rot of sugar cane,

Turnip mosaic, Black rot crucifier

(a) 4 (b) 5 (c) 7 (d) 8

110. Potato spindle tuber disease is caused by

(a) Virus (b) Viroids (c) Lichens (d) Fungi

111. ‘Viroids’ is discovered by

(a) Ivanowsky (b) T. O. Diener (c) Beijerinck (d) Stanley

112. Viroids are

(a) Free protein (b) Free RNA (c) Free DNA (d) Free saccharides

113. The molecular weight of RNA of viroid is

(a) High (b) Low

114. Lichens are symbiotic association between

(a) Algae and bacteria (b) Bacteria and fungus

115. In lichen, the algal component is called ______ and fungal component is called ______.

(a) mycobiont, phycobiont (b) phycobiont, mycobiont

116. Which one of the following is heterotrophic in lichen?

(a) Fungus (b) Algae (c) Both (a) and (b) (d) None

117. Lichens are

(a) Pollution indicators

(b) Symbiotic association between algae and fungus

(d) All of the above

118. Which of the following is incorrect about lichens?

(a) Algae part is autotrophic (b) Fungus part absorb nutrient and minerals

Previous Year Questions

2. Select the correct combination of the statements (A-D) regarding the characteristics of certain

organisms

[AIPMT MAINS 2010]

(A) Methanogens are archaebacteria which produce methane in marshy areas.

(B) Nostoc is a filamentous blue–green algae which fixes atmospheric nitrogen.

(D) Mycoplasma lack a cell wall and can survive without oxygen.

The correct statements are:

(a) (B) and (C) (b) (A), (B) and (C)

3. Some hyperthermophilic organisms that grow in highly acidic (pH = 2) habitats belong to the

two groups called

[AIPMT PRE 2010]

(a) Eubacteria and archaea (b) Cyanobacteria and diatoms

4. Single-celled eukaryotes are included in

[AIPMT PRE 2010]

(a) Protista (b) Fungi

5. The virus envelope is known as

[AIPMT PRE 2010]

(a) Capsid (b) Virion

6. Infectious proteins are present in

[AIPMT PRE 2010]

(a) Gemini viruses (b) Prions

7. Organisms called methanogens are most abundant in a

[AIPMT PRE 2011]

(a) Cattle yard (b) Polluted stream

8. How many organisms in the list given below are autotrophs?

Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces,

Trypanosoma, Porphyra, Wolffia

[AIPMT MAINS 2012]

(a) Five (b) Six

9. The most abundant prokaryotes helpful to humans in making curd from milk and in produc-

tion of antibiotics are the ones categorized as:

[AIPMT PRE 2012]

(a) Cyanobacteria

(b) Archaebacteria

(d) Heterotrophic bacteria

10. The cyanobacteria are also referred to as:

[AIPMT PRE 2012]

(a) Protists (b) Golden algae

11. Which statement is wrong for viruses?

[AIPMT PRE 2012]

(a) All are parasites.

(b) All of them have helical symmetry.

(d) Antibiotics have no effect on them.

12. Which one single organism or the pair of organisms is correctly assigned to its or their named

taxonomic group?

[AIPMT PRE 2012]

(a) Paramoecium and plasmodium belong to the same kingdom as that of penicillium.

(b) Lichen is a composite organism formed from the symbiotic association of an algae and a

protozoan.

(d) Nostoc and Anabaena are examples of protista.

13. Maximum nutritional diversity is found in the group

[AIPMT PRE 2012]

(a) Fungi (b) Animalia

14. Pigment containing membranous extensions in some cyanobacteria are

[AIPMT PRE 2013]

(a) Heterocysts (b) Basal bodies

15. The five kingdom system of classification suggested by R. H. Whittaker is not based on

[AIPMT PRE 2014]

(a) Presence or absence of a well defined nucleus

(b) Mode of reproduction

(d) Complexity of body organization

16. Which one of the following fungi contains hallucinogens?

[AIPMT PRE 2014]

(a) Morchella esculenta (b) Amanita muscaria

17. Archaebacteria differ from eubacteria in

[AIPMT PRE 2014]

(a) Cell membrane structure (b) Mode of nutrition

18. Anoxygenic photosynthesis is the characteristic of

[AIPMT PRE 2014]

(a) Rhodospirillum (b) Spirogyra

19. Which of the following shows coiled RNA strand and capsomeres?

[AIPMT PRE 2014]

(a) Polio virus (b) Tobacco mosaic virus

20. Viruses have

[AIPMT PRE 2014]

(a) DNA enclosed in a protein coat (b) Prokaryotic nucleus

21. A location with luxuriant growth of lichen on the trees indicated that the

[AIPMT PRE 2014]

(a) Tress are very healthy (b) Trees are heavily infested

22. Which of the following matches is correct? [AIPMT 2015]

(a) Phytophthora → Aseptate mycelium → Basidiomycetes

(b) Alternania → Sexual reproduction absent → Deuteromycetes

(d) Agaricus → Parasitic fungus → Basidiomycetes

23. The guts of cow and buffalo posses [AIPMT 2015]

(a) Fucus spp (b) Chlorella spp

24. The imperfect fungi which are decomposers of litter and help in mineral cycling belong to

[RE-AIPMT 2015]

(a) Basidiomycetes (b) Phycomycetes

25. Pick up the wrong statement:

[RE-AIPMT 2015]

(a) Protista have photosynthetic and heterotrophic modes of nutrition.

(b) Some fungi are edible.

(d) Cell wall is absent in Animalia.

26. Chromatophores take part in

[RE-AIPMT 2015]

(a) Growth (b) Movement

27. Which of the following disease is caused by a protozoan?

[RE-AIPMT 2015]

(a) Influenza (b) Babesiosis

28. Select the wrong statement

[RE-AIPMT 2015]

(a) W.M. Stanley showed that viruses could be crystallized

(b) The term ‘contagium vivum fluidum’ was coined by M.W. Beijerinek

(d) The viroids were discovered by D.J. Ivanowsky

29. Cell wall is absent in

[RE-AIPMT 2015]

(a) Funaria (b) Mycoplasma

30. In which group of organisms the cell walls from two thin overlapping shells which fit together?

[RE-AIPMT 2015]

(a) Euglenoids (b) Dianoflagellates

31. Choose the wrong statement:

[RE-AIPMT 2015]

(a) Neurospora is used in the study of biochemical genetics

(b) Morels and Buffles are poisonous mushrooms

(d) Penicillium is multicellular and produces antibiotics

32. Which of the following statements is wrong for viroids? [NEET - I, 2016]

(a) They lack a protein coat

(b) They causes infections

(d) Their RNA is of high molecular weight

33. Which of the following statements is wrong? [NEET - I, 2016]

(a) Cyanobacteria are also called blue-green algae.

(b) Golden algae are also called desmids.

(d) Phycomycetes are also called algal fungi.

34. Which of the following would appear as the pioneer organisms on bare rocks?

[NEET - I, 2016]

(a) Lichens (b) Mosses

35. Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom:

[NEET - I, 2016]

(a) Monera (b) Protista

36. The primitive prokaryotes responsible for the production of biogas from the dung of ruminant

animals, include the: [NEET - I, 2016]

(a) Halophiles (b) Thermoacidophiles

37. Which one of the following is wrong for fungi? [NEET - II, 2016]

(a) All fungi possess a purely cellulosic cell wall

(b) They are heterotrophic

(d) They are eukaryotic

38. Methanogens belong to [NEET - II, 2016]

(a) Archaebacteria (b) Dianoflagellates

39. Select the wrong statement: [NEET - II, 2016]

(a) ‘Diatomaceous earth’ is formed by the cell walls of diatoms

(b) Diatoms are chief producers in the oceans

(d) The walls of diatoms are easily destructible

Assertion and Reason Questions

Read the assertion and reason carefully to mark the correct option out of the options given below:

(a) If both the assertion and the reason are true and the reason is a correct explanation of the

assertion.

(b) If both the assertion and reason are true but the reason is not a correct explanation of the

assertion.

(d) If both the assertion and reason are false.

129. Assertion: Chemotaxonomy is classifying organisms at molecular level.

Reason: Cytotaxonomy is classifying organisms at cellular level.

130. Assertion: Bacteria are prokaryotic.

Reason: Bacteria do not possess true nucleus and membrane bound cell organelles.

131. Assertion: Bacteria are grouped under four categories based on their shapes.

Reason: Cocci and Bacilli may form clusters or chain of a definite length.

132. Assertion: Mycoplasma can survive without oxygen.

Reason: They have no cell wall.

133. Assertion: Bacterial cell wall are not like the plant cell.

Reason: Bacterial cell wall is made up of cellulose.

134. Assertion: Bacteria do not always move with the help of flagella.

Reason: Flagellated bacteria employs rotary motion of flagellum when it moves.

135. Assertion: Amoeba contains a contractile vacuole.

Reason: It helps in both digestion and osmoregulation.

136. Assertion: Whittaker proposed a five kingdom classification.

Reason: The main criteria were cell structure, body organization, mode of nutrition, repro-

duction and phylogenetic relationship.

137. Assertion: Paramecium is aquatic, actively moving organism.

Reason: Paramecium contains two nucleus.

138. Assertion: Fresh water protozoan possess contractile vacuoles.

Reason: The main function of the vacuole is contraction during digestion.

139. Assertion: Sexual reproduction in protozoan is not a frequent occurrence.

Reason: Sexual reproduction has no significance.

140. Assertion: Bacteria are the most abundant micro-organism.

Reason: Bacteria show most extensive metabolic diversity.

141. Assertion: Euglenoids have flexible body.

Reason: Euglenoids are covered by protein rich layer called pellicle

142. Assertion: Slime moulds are saprophytic protists.

Reason: Slime moulds derive their nutrition mainly from decaying organic matter.

143. Assertion: Slime moulds are called protistan fungi.

Reason: A Slime mould resembles both protozoa and true fungi.

144. Assertion: Cell walls of diatoms are indestructible.

Reason: Cell walls of diatoms embedded with silica.

145. Assertion: Mycoplasma is pleomorphic (means can change their shape).

Reason: Cell wall is absent in Mycoplasma.

146. Assertion: Euglenoids shows mixotrophic nutrition.

Reason: Euglenoids are autotrophic in sunlight and heterotrophic in absence of sunlight.

147. Assertion: Neurospora is used extensively in genetic work.

Reason: Neurospora belongs to Ascomycetes.

148. Assertion: Bladderwort and Venus fly trap are parasite

Reason: Cuscuta is insectivorous plant.

149. Assertion: Lichens are very good pollution indicators.

Reason: Lichens do not grow in polluted areas.

150. Assertion: Virus is obligate parasite

Reason: Virus can’t multiply without host cell.

151. Assertion: Aristotle used simple morphological characters to classify plants into trees, shrubs

and herbs.

Reason: Aristotle divides animals in two groups on the basis of presence or absence of red

blood.

152. Assertion: Fungi are no more considered as plant.

Reason: Fungi posses heterotrophic nutrition and their cell wall consist of chitin mainly.

153. Assertion: Kingdom Protista brought together chlorella and paramecium, which in earlier classification were placed in different kingdom.

Reason: Criteria for different classification are different in many aspects.

154. Assertion: Bacteria are the most abundant micro-organisms

Reason: Bacteria only shows autotrophic mode of nutrition.

155. Assertion: Bacteria have simple structure.

Reason: Bacteria show most extensive metabolic diversity.

156. Assertion: Archaebacteria is most resistant to adverse environmental conditions.

Reason: Archaebacteria has complex cell wall structure.

157. Assertion: Methane is produced from the dung of ruminating animals.

Reason: Methanogens present in gut of many ruminant animals.

158. Assertion: Chemosynthetic autotrophic bacteria are useful for ecosystem.

Reason: They play great role in recycling nutrients like nitrogen, phosphorus, iron and sulphur.

159. Assertion: Bacteria reproduce mainly by binary fission.

Reason: Under unfavourable condition they produce spores.

160. Assertion: All single called eukaryotes reproduce by asexual means only placed under king-

dom Protista.

Reason: Protistan cell contain well defined nucleus but not membrane bound cell organelles.

161. Assertion: Classification system has undergone several changes over a period of time.

Reason: This is because the criteria for classification gradually get changed.

162. Assertion: Deuteromycetes are referred as imperfect fungi

Reason: Sexual stage is not known in these fungi

NCERT Exemplar Questions

1. All eukaryotic unicellular organisms belong to

(a) Monera

(b) Protista

(d) Bacteria

2. The five kingdom classification was proposed by

(a) R.H. Whittaker

(b) C. Linnaeus

(d) Virchow

3. Organisms living in salty areas are called as

(a) Methanogens

(b) Halophiles

(d) Thermoacidophiles

4. Naked cytoplasm, multinucleated and saprophytic specifications are the characteristics of

(a) Monera

(b) Protista

(d) Slime moulds

5. An association between roots of higher plants and fungi is called

(a) Lichen

(b) Fern

(d) BGA

6. A dikaryon is formed when

(a) Meiosis is formed

(b) The two haploid cells do not fuse completely

(d) None of the above

7. Contagium vivum fluidum was proposed by

(a) D. J. Ivanovsky

(b) M. W. Beijerinck

(b) Stanley

(d) Robert Hook

8. The association between mycobiont and phycobiont is found in

(a) Mycorrhiza

(b) Root

(d) BGA

9. Difference between a Virus and a Viroid is

(a) Absence of protein coat in viroid but present in virus.

(b) Presence of low molecular weight RNA in virus but absent in viroid.

(d) None of the above

10. With respect to fungal sexual cycle, choose the correct sequence of events.

(a) Karyogamy, Plasmogamy and Meiosis

(b) Meiosis, Plasmogamy and Karyogamy

(d) Meiosis, Karyogamy and Plasmogamy

11. Viruses are non-cellular organisms but replicate themselves once they infect the host cell. To which of the following kingdom do viruses belong to?

(a) Monera

(b) Protista

(d) None of the above

12. 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 options.

(a) None of the above

(b) i and iv

(d) All the above

Answer Keys -

Practice Questions

1. (b) 2. (b) 3. (b) 4. (d) 5. (c) 6. (d) 7. (d) 8. (c) 9. (d) 10. (b)

11. (a) 12. (c) 13. (d) 14. (d) 15. (a) 16. (a) 17. (b) 18. (c) 19. (c) 20. (a)

21. (c) 22. (a) 23. (b) 24. (b) 25. (b) 26. (a) 27. (d) 28. (b) 29. (d) 30. (d)

31. (d) 32. (d) 33. (b) 34. (c) 35. (d) 36. (d) 37. (d) 38. (b) 39. (c) 40. (c)

41. (b) 42. (a) 43. (b) 44. (d) 45. (c) 46. (b) 47. (d) 48. (b) 49. (b) 50. (c)

51. (d) 52. (d) 53. (d) 54. (c) 55. (c) 56. (d) 57. (d) 58. (c) 59. (d) 60. (c)

61. (c) 62. (d) 63. (c) 64. (b) 65. (d) 66. (d) 67. (d) 68. (d) 69. (b) 70. (d)

71. (d) 72. (d) 73. (d) 74. (a) 75. (c) 76. (b) 77. (c) 78. (c) 79. (a) 80. (c)

81. (d) 82. (b) 83. (d) 84. (b) 85. (d) 86. (d) 87. (b) 88. (b) 89. (b) 90. (d)

91. (d) 92. (d) 93. (d) 94. (b) 95. (c) 96. (d) 97. (b) 98. (a) 99. (b) 100. (d)

101. (d) 102. (c) 103. (d) 104. (d) 105. (d) 106. (c) 107. (d) 108. (d) 109. (b) 110. (b)

111. (b) 112. (b) 113. (b) 114. (c) 115. (b) 116. (a) 117. (d) 118. (d)

Assertion and Reason Questions

129. (b) 130. (a) 131. (b) 132. (b) 133. (a) 134. (b) 135. (c) 136. (b) 137. (b) 138. (c)

139. (c) 140. (b) 141. (a) 142. (a) 143. (a) 144. (a) 145. (a) 146. (a) 147. (b) 148. (d)

149. (a) 150. (a) 151. (b) 152. (a) 153. (a) 154. (c) 155. (b) 156. (a) 157. (a) 158. (a)

159. (b) 160. (d) 161. (a) 162. (a)

Previous Year Questions

1. (c)

2. (d)

3. (a)

4. (a)

5. (a)

6. (b)

7. (a)

8. (b)

9. (d)

10. (d)

11. (b)

12. (c)

13. (c)

14. (d)

15. (a)

16. (b)

17. (a)

18. (a)

19. (b)

20. (a)

21. (d)

22. (b)

23. (c)

24. (d)

25. (c)

26. (d)

27. (b)

28. (d)

29. (b)

30. (d)

31. (b)

32. (d)

33. (c)

34. (a)

35. (b)

36. (c)

37. (a)

38. (a)

39. (d)

NCERT Exemplar Questions

1. (b)

2. (a)

3. (b)

4. (d)

5. (c)

6. (b)

7. (b)

8. (c)

9. (a)

10. (c)

11. (d)

12. (d)

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