Diversity of Plant Life MCQs Part I

1) The branch of science dealing with the identification, nomenclature and classification of organisms is
a) Ecology
b) Physiology
c) Taxonomy
d) Anatomy

2) The term “Biology” for the study of living things was coined by
a) Aristotle
b) Theophratus
c) Lamark and Treviranus
d) Bentham and Hooker

3) The Father of Botany is
a) Hippocrates
b) Darwin
c) Theophrastus
d) Aristotle

4) Which one is most used in identification?
a) Genetics
b) Anatomy
c) Histology
d) External morphology

5) At present the approximate number of plants known to science is
a) 500000
b) 50000
c) 5000
d) 500

6) Which one of the following taxonomic categories contains organisms least similar to one another?
a) Species
b) Genus
c) Family
d) Class

7) Which of the following parasites is non-living outside the cell or a living organism but becomes living on entering it?
a) Bacteria
b) Bacteriophage
c) Plasmodium
d) None

8) Viruses were first discovered by
a) Stanley
b) Iwanowski
c) Herelle
d) Beijerinck

9) A bacteriophage has the genetic material
a) RNA
b) DNA
c) RNA or DNA
d) DNA and mRNA

10) The protein cover of a virus is called the
a) Capsid
b) Virion
c) Viroid
d) Bacterial wall

11) Which is an exception to the cell theory?
a) Fungi
b) Lichens
c) Algae
d) Viruses

12) The capsid of viruses has been studied by
a) Electron microscopy and autoradiography
b) X-ray crystallography and electron microscopy
c) Spectrophotometry and X-ray crystallography
d) Autoradiography and spectrophotometry

13) A naked DNA-containing virus is
a) Reovirus
b) Adenovirus
c) Ribovirus
d) Poliovirus

14) On infection viruses inject … into the host
a) Proteins
b) Nucleic acid
c) Nucleoproteins
d) Lipids

15) Name the angiosperm which lacks cotyledons
a) Cotton
b) Ranunculus
c) Cascuta
d) Loranthus

16) The largest flower is that of
a) Lemna
b) Wolffia
c) Rafflesia
d) Cauliflower

17) An organism lacking chlorophyll yet able to carry out photosynthesis is
a) Virus
b) Cyanobacteria
c) Bacteria
d) Protozoa

18) Viruses can be considered living as
a) They lack enzymes
b) They have protein materials
c) They have genetic material
d) They can replicate

19) The tallest tree ever measured is the
a) Sequoia
b) Eucalyptus
c) Dalbergia sisso
d) Banyan

20) In some viruses, RNA is present instead of DNA indicating that
a) Their nucleic acid must combine with lost DNA before replication
b) RNA can act to transfer heredity
c) They cannot replicate
d) There is no heredity information

21) A bacteriophage is a
a) Mycoplasma
b) Spirochaete
c) Rickettsiae
d) Virus

22) Which of the following has the largest flower?
a) Hibiscus
b) Anona
c) Rafflesia
d) Sequoia

23) Prokaryotes are
a) Animals without a well developed nervous system
b) Organisms lacking a definite nucleus
c) Organisms having only ribosomes
d) Both B and C

24) The smallest of the following plants is
a) Wolffia arrhiza
b) Eucalyptus regnans
c) Amorphophallus
d) Acetabularia

25) Fusion between dissimilar gametes is
a) Autogamy
b) Isogamy
c) Allogamy
d) Dichogamy

26) The alga yielding agar agar is
a) Gelidium
b) Rhodymenia
c) Batrachospermum
d) Harveyella

27) In scalariform conjugation of Spirogyra the fusing gametes are derived from
a) Same filament
b) Two different filaments
c) Both A and B
d) Only one filament is involved in the process

28) The male gamete in Spirogyra is
a) Motile but aflagellate
b) Motile and flagellate
c) Nonmotile and flagellate
d) Multinucleate

29) The most common mode of reproduction in Spirogyra is
a) Conjugation
b) Aplanospore formation
c) Fragmentation
d) All the above

30) The number of gametes produced by a single cell in Spirogyra is
a) Four
b) Two
c) Many
d) One

31) The zygote in Spirogyra is initially
a) Biflagellate
b) Nonflagellate
c) Multiflagellate
d) Quadriflagellate

32) An edible rhodophyte is
a) Polysiphonia
b) Bactrachospermum
c) Porphyra
d) Corallina

33) Meiosis in spirogyra occurs at the time of
a) Zoospore formation
b) Gamete formation
c) Akinete formation
d) Germination of the zygospore

34) The plant body of spirogyra is
a) Diploid
b) Haploid
c) Triploid
d) Polyploid

35) Which one is not connected with spore dispersal in Funaria?
a) Foot
b) Annulus
c) Seta
d) Peristome

36) Which one is a kelp?
a) Batrachospermum
b) Ulothrix
c) Macrocystis
d) Dictyota

37) The main plant of Funaria belongs to the —- phase.
a) Polypoid
b) Diploid
c) Triploid
d) Haploid

38) The sporogonium of Funaria is dependent on the gametophyte
a) Fully
b) For food only
c) Partially for water and minerals
d) None of the above

39) The moss plants are characterised by
a) the presence of stem- and leaf-like structures
b) the absence of vascular tissue
c) A filamentous juvenile gametophyte
d) All the above

40) Knobbed paraphyses are found on the
a) Archegonia of Funaria
b) Antheridia of Funaria
c) Antheridia as well as archegonia
d) Neither of them

41) The juvenile stage of the gametophytes of moss is
a) Green, filamentous and branched structure called protonema
b) A tetraflagellate body
c) Dorsoventrally flattened plate like body
d) A colourless mass of tubular structures

42) The largest alga is
a) Laminaria
b) Macrocystis
c) Nereocystis
d) Sargassum

43) The first land inhabiting plants are
a) Pteridophytes
b) Bryophytes
c) Gymnosperms
d) Angiosperms

44) The only positive evidence for the aquatic ancestry of Bryophytes is
a) Their green colour
b) The thread like protonema
c) Ciliated sperms
d) Some forms are still aquatic

45) The rhizoids in Funaria are
a) Green and branched thread like structures
b) Unbranched root like outgrowths
c) Branched and multicellular nongreen thread like structures
d) Unicellular and of two types

46) Female sex organs in Funaria are
a) Antheridia
b) Archegonia
c) Oospore
d) Paraphyses

47) Apart from fixation and water absorption the rhizoids of Funaria help

a) Perennation
b) Dispersal
c) Storage
d) Vegetative reproduction

48) Antherozoids of moss are
a) Short, curved and biciliate
b) Rod shaped, biciliate
c) Short and multiciliate
d) Long and multiciliate

49) Velamen is needed for
a) Respiration of plants
b) Protection of tissues
c) the absorption of moisture
d) None of these

50) Bulliform cells are
a) Water-filled and highly vacuolated epidermal cells
b) Prokaryotic cells
c) Eukaryotic cells
d) Ball-like parenchymatous cells

51) Root hairs are
a) Acellular
b) Unicellular
c) Both A and B
d) Multicellular

52) The seat of the origin of lateral root or secondary root is
a) Endodermal cells against phloem
b) Pericycle cells against protoxylem
c) Cortical cells below root hairs
d) Epiblema/phellogen

53) The origin of a vegetative branch is
a) Endogenous
b) Exogenous
c) Schizogenous
d) Internal from intercalary meristems

54) When xylem and phloem are on the same radii, the vascular bundles are said
to be

a) Radial
b) Conjoint/collateral
c) Concentric
d) Exarch/centripetal

55) In a collateral vascular bundle
a) Xylem is inside and phloem is outside
b) Phloem is inside and xylem is outside
c) Internal xylem is surrounded by phloem
d) Internal phloem is surrounded by xylem

56) Collateral bundles occur in
a) Dicot stems only
b) Monocot stems only
c) Dicot as well as monocot stems
d) Leaves only

57) When the meristematic tissue “cambium” is present inside a vascular
bundle, then it is said to be

a) Conjoint
b) Open
c) Closed
d) Collateral

58) A vascular bundle in which phloem is on both sides of the xylem
and separated from it by strips of cambium is said to be

a) Collateral open
b) Bicollateral open
c) Concentric
d) Bicollateral closed

59) Bicollateral bundles are found in the stem of
a) Cycas/sunflower
b) Gram/Canna
c) Pumpkin
d) Dracaena

60) The bicollateral vascular bundle is the characteristic feature of plants
belonging to the family

a) Cruciferae
b) Liliaceae
c) Cucurbitaceae
d) Malvaceae

61) A concentric amphivasal vascular bundle is that in which
a) Centrally located xylem is surrounded by phloem
b) Centrally located phloem is surrounded by xylem
c) Phloem is flanked by xylem on the interior sides only
d) Xylem is flanked by phloem on the exterior sides only.

62) Protista includes
a) Unicellular procaryotes
b) Unicellular eucaryotes
c) Bacteriophages
d) Blue-green algae

63) Decomposer protists are
a) Sarcodines
b) Dinoflagellates
c) Slime moulds
d) Diatoms

64) Which is a marine protist?
a) Amoeba proteus
b) Pelomyxa
c) Noctiluca
d) Paramecium

65) The time taken by the sporozoite in man to leave the liver and enter the RBCs is
a) 8 days
b) 14 days
c) 10 days
d) 6 days

66) Under unfavorable conditions, the Amoeba reproduces by
a) Conjugation
b) Endomixis
c) Binary fission
d) Encystment

67) The food vacuole of Amoeba is analogous to the
a) Mouth of the rabbit
b) Stomach of the rabbit
c) Alimentary canal of the rabbit
d) Living rabbit

68) The pseudopodia of Amoeba are locomotor organelles. These are tipped by a
a) Cuticle
b) Pellicle
c) Hyaline cap
d) Plasmasol

69) If Amoeba is placed in distilled water, its contractile vacuole
a) Works slowly
b) Works faster
c) Remains unaffected
d) Disappears

70) The contractile vacuole of Amoeba is analogous to the
a) Rectum of the frog
b) Uriniferous tubules of the frog
c) Pulsating heart of man
d) Sweat glands of man

71) Encystment in Amoeba serves for
a) Tiding over unfavourable conditions
b) Reproduction
c) Dispersal
d) All the above

72) The contractile vacuole in Amoeba is meant for
a) Osmoregulation and discharge of nitrogenous wastes
b) Removing excess water
c) Osmoregulation and excretion of undigested food
d) The discharge of nitrogenous wastes

73) In Amoeba, binary fission occurs through the process of
a) Mitosis
b) Amitosis
c) Meiosis
d) Cytokinesis

74) Escherichia coli is a
a) Commensal
b) Symbiont
c) Pathogen or parasite
d) Predator

75) The infective stage of Entamoeba histolytica is the
a) Sporozoite
b) Mature cyst
c) Minute form
d) Trophic form

76) Amoebiasis occurs in abundance in the tropical regions of the globe because
a) The temperature in summer in the tropics is high
b) Many more species of birds occur in the tropics than in the temperate regions
c) The tropics have a large housefly population
d) The tropics have several species of mosquitoes in large numbers

77) Entamoeba can be differentiated from Amoeba by the
a) Absence of a food vacuole
b) Absence of a contractile vacuole
c) Mode of reproduction
d) Size

78) How many amoebae are hatched from a single cyst of entamoeba?
a) One
b) Two
c) Four
d) Eight

79) Naked seeds occur in
a) Pteris/Pteridophytes
b) Cycas/Gymnosperms
c) Funaria/Bryophytes
d) Maize/Angiosperms

80) Angiosperms contain
a) Tracheids
b) Vessels
c) Both A and B
d) None of the above

81) The number of species belonging to gymnosperms is
a) 900
b) 1000
c) 700
d) 800

82) Which are the amphibians of the plant kingdom?
a) Tracheophyta
b) Bryophyta
c) Pteridophyta
d) Thallophyta

83) Which one is a living fossil?
a) Pinus
b) Gnetum
c) Ginkgo
d) Riccia

84) The elater mechanism of spore dispersal is found in
a) Riccia
b) Marchantia
c) Funaria
d) Fern

85) Double fertilization is characteristic of
a) Pteridophytes
b) Gymnosperms
c) Bryophytes
d) Angiosperms

86) A rhizophore is a
a) Stem branch
b) Root
c) Reproductive organ
d) Intermediate between A and B

87) A sporocarp is a reproductive structure of
a) Some algae
b) Some aquatic ferns having sori
c) Angiosperms having spores
d) Bryophytes

88) Antheridia and archegonia are sex organs of
a) Spirogyra
b) Mucor
c) Moss
d) Puccinia

89) Vascular bundles are absent in
a) Gymnosperms
b) Angiosperms
c) Pteridophytes
d) Bryophytes

90) In gymnosperms, the ovules are
a) Naked
b) Covered
c) With two coats
d) All the above

91) The fern prothallus is a
a) Rhizoid
b) Protonema
c) Sporophyte
d) Gametophyte

92) The protostele is a
a) Stele divided into many parts
b) Early stele with central solid xylem surrounded by phloem
c) Latent stele
d) Angiosperm stele

93) The plant group in which every cell of the gametangium forms gametes is
a) Thallophyta
b) Bryophyta
c) Pteridophyta
d) Gymnosperms

94) After resting, Spirogyra spores are
a) Diploid
b) Haploid
c) Zygospores
d) Aplanospores

95) The cell wall of Spirogyra/Green Algae is composed of
a) Cellulose
b) Lignin
c) Chitin
d) Suberin

96) A saprobiotic bryophyte is
a) Ricciocarpus
b) Porella
c) Buxbaumia aphylla
d) Sphagnum

97) Sex organs are embedded in the thallus in
a) Moss
b) Riccia
c) Azolla
d) Fern

98) Which is haploid in Funaria?
a) Capsule
b) Columella
c) Protonema
d) Seta

99) Retort cells occur in
a) Funaria
b) Polygonatum
c) Porella
d) Sphagnum

100) In which of the following do elater mother cells and spore mother cells belong
to the same generation?

a) Marchantia
b) Reboulia
c) Riccardia
d) Dryopteris



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