Diversity of Plant Life MCQs Part II

1) The seed habit originated in certain
a) Bryophytes
b) Ferns
c) Gymnosperms
d) Angiosperms

3) Cycas resembles angiosperms in having
a) Circinate vernation in leaves
b) Vessels
c) Motile sperms
d) Ovules

4) Who is called the father of taxonomy?
a) Engler
b) Aristotle
c) Linnaeus
d) Eichler

5) The basic unit of classification is the
a) Genus
b) Species
c) Family
d) Order

6) A group of similar plants which breed freely among themselves constitute a
a) Genus
b) Family
c) Species
d) Ecotype

7) The biological concept of species is mainly based on
a) morphological features only
b) methods of reproduction only
c) morphology and methods of reproduction
d) reproductive isolation

8) A group of plant genera which show general structural resemblances to one another mainly in their floral organs is termed
a) Family
b) Class
c) Order
d) Tribe

9) Families with common characters constitute a
a) Class
b) Sub-class
c) Phylum
d) Order

10) The taxonomic categories lower than the rank of an order are
a) Division, genus, variety
b) Class, division, species
c) Family, genus, species
d) Variety, class, family

11) The highest unit of classification is the
a) Phylum
b) Class
c) Kingdom
d) Series

12) What is the correct descending sequence of taxonomic categories?
a) Division, class, order, family, tribe, genus
b) Class, order, division, tribe, family, genus
c) Class, division, order, genus, tribe, family
d) Family, tribe, genus, order, division, class

13) A taxon is
a) A genus
b) A species
c) A taxonomic category of any rank
d) A taxonomic unit

14) A taxon refers to
a) A group of closely related families
b) A group of closely related plants or animals
c) A particular type of living organism
d) Any taxonomic group such as phylum, species or a family

15) The term taxon was coined by
a) Tournefort
b) Linnaeus
c) Adolf Meyer
d) Lam

16) Linnaeus introduced a system of nomenclature called
a) Binomial system
b) Artificial system
c) Natural system
d) Phylogenetic system

17) The binomial system of nomenclature (in plants) was first used by
a) Darwin
b) Mendel
c) Lawrence
d) Carolus Linnaeus

18) The binomial system of nomenclature means that an organism has
a) Two names,one popular & another scientific
b) One name given by two botanists
c) Two names, one in Latin and another in English
d) One name consisting of the genus and another name which denotes the species

19) Linnaeus published his system of binomial nomenclature in
a) Genera Plantarum
b) Systema Naturae
c) Origin of Species
d) Proceedings of Linnaen Society

20) ICBN (International Code of Botanical Nomenclature) was adopted in
a) 1853
b) 1953
c) 1964
d) 1975

21) Most botanical names have been derived from
a) German
b) Greek
c) Latin
d) Spanish

22) The artificial system of classification classifies plants on the basis of
a) Phylogenetic trends
b) One or two characters
c) As many as possible character
d) None of the above

23) A system of classification based on all important morphological characters
is termed a/an

a) Artificial system
b) Natural system
c) Phylogenetic system
d) both a and c

24) Natural systems of classification differ from artificial systems of
classification in

a) Taking into account only one floral character
b) Taking into account only one vegetative character
c) Taking into account all the similarities between plants
d) All of these

26) The term New Systematics was coined by
a) Lamarck
b) Linnaeus
c) Huxley
d) Hutchinson

27) A branch of botany concerned with the classification, nomenclature
and identification of plants is

a) Systematic Botany
b) Ecology
c) Morphology
d) Physiology

28) Plants which never bear flowers or seeds are
a) Phanerogams
b) Cryptogams
c) Spermatophyta
d) Angiosperms

29) The first formed organisms were
a) Animals
b) Plants
c) Neither plants nor animals
d) Protists

30) Yeasts are members of the kingdom
a) Monera
b) Protista
c) Metaphyta
d) Fungi

31) The five-kingdom classification was proposed by
a) Linnaeus
b) Whittaker
c) John Ray
d) Lamarck

32) Whittaker proposed the 5-kingdom classification in
a) 1969
b) 1959
c) 1978
d) 1988

33) The most primitive organisms are
a) Monerans
b) Protists
c) Fungi
d) Algae

34) In the five-kingdom classification, slime moulds are included under
a) Monera
b) Protista
c) Fungi
d) Metaphyta

35) In the two-kingdom classification, bacteria and fungi are included in the
a) Animal kingdom
b) Plant kingdom
c) Plant and Animal kingdoms
d) Neither of the two kingdoms

36) Absorptive nutrition occurs in
a) Saprotrophs
b) Parasites
c) Both A and B
d) Animals

37) The maximum nutritional diversity is found in the group
a) Protista
b) Monera
c) fungi
d) Animalia

38) Chemoautotrophy occurs in the kingdom
a) Plantae
b) Protista
c) Monera
d) All the above

39) Phytoplankton and zooplankton mostly belong to
a) Monera
b) Protista
c) Animalia
d) Plantae and Animalia

40) The body structure in the kingdom Monera can be
a) Unicellular and colonial
b) Mycelium
c) Filamentous
d) All the above

41) Which of the following have a large surface area?
a) Plants
b) Animals
c) Monerans
d) Protistans

42) Decomposers are
a) Phagotrophs
b) Saprotrophs
c) Osmotrophs
d) Both B and C

43) Archaebacteria belong to
a) Progenote
b) Protista
c) Monera
d) Ciliophore

44) Thallophyta includes
a) Fungi and Bacteria
b) Algae, Fungi, Bacteria and Lichens
c) Algae, Fungi and Lichens
d) Algae and Fungi

45) Blue-green algae are placed in the kingdom
a) Plantae
b) Protista
c) Fungi
d) Monera

46) Plants which never bear flowers or seeds are
a) Phanerogams
b) Cryptogams
c) Spermatophyta
d) Angiosperms

47) Liverworts and mosses are placed under
a) Angiosperms
b) Gymnosperms
c) Pteridophyta
d) Bryophyta

48) True roots are completely absent in
a) Bryophytes
b) Pteridophytes
c) Gymnosperms
d) Angiosperms

49) Leafy gametophytes are present in
a) Bryophytes
b) Pteridophytes
c) Gymnosperms
d) Angiosperms

50) The most primitive vascular plants are
a) Cycas
b) Ferns
c) Red algae
d) Brown algae

51) A pteridophyte differs from a bryophyte in
a) Having multicellular & jacketed gametangia
b) Having multicellular jacketed sporangia
c) the presence of vascular tissues
d) the development of the zygote into an embryo

52) Which of the following plants exhibit independent alternation of generations?
a) Angiosperms
b) Gymnosperms
c) Pteridophytes
d) Bryophytes

53) The gametophytic generation dominates the life cycle in
a) Angiosperms
b) Gymnosperms
c) Pteridophytes
d) Bryophytes

54) Ovules are naked in gymnosperms because
a) Nucellus is absent
b) Carpels are absent
c) Integuments are absent
d) Endosperm is absent

55) In the five-kingdom system of classification, which single kingdom out of the following can include blue-green algae, nitrogen-fixing bacteria and methanogenic archaebacteria?
a) Monera
b) Fungi
c) Plantae
d) Protista

56) In the five-kingdom system of classfication, which single kingdom out of the following can include blue-green algae, nitrogen-fixing bacteria and methnogenic archaebacteria?
a) Monera
b) Fungi
c) Plantae
d) Protista

57) Bacteria were included in the kingdom Monera by
a) Haeckel
b) Stanier
c) Dougherty
d) Whittaker

58) Modern biologists place Bacteria under the kingdom
a) Protista
b) Plantae
c) Fungi
d) Monera

59) Bacteria are regarded as primitive organisms because they
a) Possess incipient nucleus
b) Are small, microscopic plants, which are not visible to the naked eyes
c) Cause serious diseases to human beings, domesticated animals and crop plants
d) Produce endospores which are very resistant to adverse conditions

60) Milk is converted into curd by
a) Xanthomonas citri
b) Bacillus megatherium
c) Acetobacter aceti
d) None of these

61) Bacteria differ from viruses in having
a) Cytoplasm
b) Their own genetic material
c) No proper nucleus
d) Pathogenic nature

62) The term cyanobacteria refers to
a) Yeast
b) Blue-green algae
c) Photosynthetic bacteria
d) Nitrogen-fixing bacteria

63) The similarity between bacterium and cyanobacterium is in the
a) presence of nucleoid
b) Presence of flagella
c) Presence of 80S rebosomes
d) None of these

64) Bacteria were first discovered by (or Bacteria were for the first time observed by)
a) A.V.Leeuwenhoek
b) Robert Hooke
c) Robert Koch
d) Louis Pasteur

65) A Dutch scientist A.V.Leeuwenhoek observed bacteria in
a) Soil
b) Rain water
c) Air
d) Garden soil

66) Bacteria are present everywhere except in
a) Ice
b) Soil
c) Sea water
d) Distilled water

67) In which of these would the bacteria per unit/area be maximum?
a) Air
b) Water
c) Soil
d) None of the above

68) The bacterium naturally present in the human alimentary canal is
a) Azotobacter
b) Clostridium
c) Bacillus subtilis
d) Escherichia coli

69) Bacteria which can survive in the absence of oxygen are known as
a) Obligate anaerobes
b) Facultative anaerobes
c) Obligate aerobes
d) Facultative aerobes

70) Which of the following is the size of bacteria?
a)
b)
c)
d)

71) The bacteria which are smallest in size are
a) Cocci
b) Vibrio
c) Bacilli
d) Spirilla

72) A spherical bacterium is termed a
a) Vibrio
b) Coccus
c) Bacillus
d) Spirillum

73) Spherical bacteria arranged in uniseriate chains are called
a) Coccus
b) Bacillus
c) Streptococcus
d) Staphylococcus

74) Bacteria whose cells have only a single curve are known as
a) Vibrio
b) Coccii
c) Spirilla
d) Bacilli

75) Which of the following is a rod-shaped bacterium?
a) Bacillus subtilis
b) Pneumococcus pneumoniae
c) Vibrio cholerae
d) Streptococcus nigricans

76) The curved or comma-shaped bacterium of cholera is termed
a) Coccus
b) Bacillus
c) Spirillum
d) Vibrio

77) The Gram stain is
a) a stain produced out of a gram
b) A trade mark
c) A staining technique developed by the Dutch scientist Gram
d) A chemical for differentiation of bacteria

78) The stain used to distinguish Gram-positive bacteria from Gram-negative ones is
a) Eosin
b) Crystal violet
c) Carmine
d) Hematoxylin

79) Gram-negative bacteria lose crystal violet because of
a) Thicker cell walls
b) Walls with more lipids
c) Walls with less lipids
d) Walls with more permeability

80) Bacteria without flagella are known as
a) Monotrichous
b) Peritrichous
c) Lophotrichous
d) Atrichous

81) Bacteria bearing flagella all over the body are called
a) Monotrichous
b) Peritrichous
c) Cephalotrichous
d) Atrichous

82) Bacteria having a tuft of flagella at one end are
a) Amphitrichous
b) Lophotrichous
c) Monotrichous
d) Atrichous

83) Bacterium with only one flagellum at one of its poles is called
a) Lophotrichous
b) Monotrichous
c) Atrichous
d) Amphitrichous

84) The flagella of bacteria are composed of
a) Protein
b) Lipid
c) Carbohydrate
d) Amide

85) Many bacteria bear minute hairy structures on their cell wall, called
a) Hairs
b) Flagella
c) Pili
d) Cilia

86) Pili in bacteria are used for
a) Asexual reproduction
b) Prey hunting
c) Locomotion
d) Sexual contact

87) Bacterial cells are usually enclosed by a
a) Chitinous capsule
b) Slimy capsule
c) Suberised capsule
d) Lignified capsule

88) The bacterial cell wall is composed of
a) Cellulose
b) Lipid
c) Chitin
d) Peptidoglycan/Mucopeptide

89) The material present in the cell walls of blue-green algae and bacteria is
a) Pectin
b) Chitin
c) Muramic acid
d) Cellulose

90) Lipids and proteins are the components of cell walls in
a) Gram-positive bacteria
b) Gram-negative bacteria
c) Gram variable bacteria
d) All fungal cells

91) In gram-positive bacteria, the peptidoglycan layer constitutes
a) 10% of the cell wall
b) 30% of the cell wall
c) 70% of the cell wall
d) 90% of the cell wall

92) The folds of plasma membrane in bacterial cells are known as
a) Episomes
b) Mesosomes
c) Spherosomes
d) Acrosomes

93) Mitochondria are absent in
a) Fungi
b) Green algae
c) Bacteria
d) Yeast

94) Chains of bacterial ribosomes are called
a) Polyribosomes
b) Autosomes
c) Mitochondria
d) Ribosomes

95) Bacterial ribosomes lie
a) In the cytoplasm
b) On the nuclear membrane
c) On the cell wall
d) On the endoplasmic reticulum

96) Bacteria lack
a) Cell wall
b) Plasma membrane
c) Mitochondria
d) Ribosomes

97) In bacteria, the respiratory enzymes are situated
a) In the cytoplasm
b) On the cell membrane
c) On the ribosomes
d) In the mitochondria

98) The nucleus of bacteria is called a
a) Nucleohistone
b) Nucleoid
c) Chromosome
d) Gene

99) The bacterial nucleoid consists of
a) One ss DNA
b) One ds DNA
c) Two ds DNA
d) Many ds DNA

100) Genophore is the name of the
a) DNA of eukaryotes
b) DNA of bacteria
c) Genes of Drosophila
d) Genes of Neurospora

Answers

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