Diversity of Plant Life MCQs Part V

1) In Chlamydomonas the term hologamy is applied to a mode of sexual reproduction in which
a) Gametes are motile
b) Gametes are holozoic
c) The young unicellular organism directly behaves as gametes
d) The gametes are differentiated into male and female

2) Oogamy is found in
a) Chlamydomonas eugametos
b) Chlamydomonas Monica
c) Chlamydomonas coccifera
d) Both A and B

3) Palmella spores are produced during
a) Favourable conditions
b) Any type of unfavourable conditions
c) Deficiency of water or presence of toxic chemicals
d) None of the above

4) The chloroplast of Chlamydomonas is
a) Cup shaped
b) Star shaped
c) Ribbon shaped
d) Lamellate

5) The unit of sexual reproduction is the
a) Zoospore
b) Aplanospore
c) Akinete
d) Gamete

6) The life cycle in Chlamydomonas/Ulothrix/Spirogya is
a) Diplontic
b) Diplohaplontic
c) Haplontic
d) None of the above

7) The red eye spot of certain green algae or their propagules is meant for
a) Photosynthesis
b) Photosensitivity
c) Visibility
d) Respiration

8) In addition to reproduction, the zygospore also helps in
a) Perennation
b) Dispersal
c) Genetic variability
d) All the above

9) Spirogyra filaments increase in length due to division in
a) Basal cells
b) Rhizoidal cell
c) Every green cell
d) Apical cell

10) Meiosis takes place in Chlamydomonas in the
a) Zygospore
b) Zoospore
c) Hypnospores
d) Aplanospores

11) Spirogyra is found in
a) Running fresh water
b) Stagnant salt water
c) Stagnant fresh water
d) None of the above

12) Spirogyra is called “pond silk” because
a) Filaments look like silk
b) Filaments are slippery to touch
c) Both A and B
d) None of the above

13) Spirogyra has chloroplasts with the shape of a
a) Spiral ribbon
b) Cup
c) Star
d) Spiral

14) The maximum number of chloroplasts in a single cell of spirogyra is
a) Four
b) Sixteen
c) One
d) Six

15) Spirogyra belongs to the class
a) Rhodophyceae
b) Cyanophyceae
c) Xanthophyceae
d) Chlorophyceae

16) An example of a parasitic green algae is
a) Chlorella
b) Ulva
c) Cladophora
d) Cephaleuros

17) The cell of Spirogyra differs from that of Chlamydomonas in
a) The presence of a ribbon shaped chloroplast
b) Presence of a central vacuole
c) Both A and B
d) Presence of chloroplasts

18) Asexual reproduction in spirogyra is generally carried out by
a) Fragmentation
b) Akinetes and aplanospores
c) Hypnospores and palmella state
d) All the above

19) Red rust of Tea is caused by
a) Puccinia
b) Ustilago
c) Cephaleuros
d) Harveyella

20) Gametangia of algae differ from those of Funaria in being
a) Unstalked
b) All identical
c) Non-jacketed and unicellular
d) None of the above

21) The nucleus of a Spirogyra cell lies
a) Suspended in the central vacuole
b) Embedded in the cytoplasm
c) Just near the cell membrane
d) In contact with the chloroplast

22) The fusing gametes of Spirogyra are
a) Morphologically similar and physiologically dissimilar
b) Morphologically as well as physiologically similar
c) Morphologically dissimilar but physiologically similar
d) Morphologically as well as physiologically dissimilar

23) All algae have two photosynthetic pigments in common
a) Chlorophyll a and chlorophyll b
b) Chlorophyll b and carotenes
c) Chlorophyll a and carotenes
d) Phycobilins and carotenes

24) The mode of sexual reproduction in spirogyra is
a) Isogamous
b) Anisogamous
c) Heterogamous
d) Oogamous

25) In which of the following plants is the gametophytic phase dominant ?
a) Fern
b) Moss
c) Angiosperm
d) Cycas

26) The stem and leaves of Funaria are
a) Analogous to those of angiosperms
b) Homologous to those of angiosperms
c) Not comparable to those of angiosperms in any way
d) None of the above

27) Life cycle of Funaria is not completed without water because

a) Fertilization takes place in the presence of water
b) Funaria is a hydrophyte
c) The plant is delicate and will dry up without water
d) Branches will not develop

28) The product of fertilization in Funaria/Selaginella/Fern is called
a) Zygote
b) Zygospore
c) Oospore
d) Oosphere

29) Which of the following is not true about Funaria ?
a) It grows on damp soil
b) The plant body is a foliaceous gametophyte
c) The sporophyte is independent of the gametophyte
d) Aseuxal reproduction occurs through the meiospores

30) In which among the following plants is the archegonium present ?
a) Spirogyra
b) Funaria
c) Rhizopus
d) Brassica

31) Which of the following structure establishes the algal ancestry of Funaria
?

a) A habit of growing on damp soil
b) The presence of free and filamentous protonema
c) Presence of rhizoids
d) Non-vascular nature

32) The main body of a bryophytic plant is always
a) Gametophyte
b) Lichen like
c) Sporophyte
d) Hormogonium

33) The sporophyte of Funaria
a) Is autotrophic
b) Is saprophytic
c) Grows as a semiparasite on the gametophyte
d) Is a total parasite on gametophyte

34) The sporophyte of Funaria is termed
a) Sporangium
b) Sporogonium
c) Sporozoite
d) None of these

35) A rhodophyte found in fresh water and without red colouration is
a) Polysiphonia
b) Gelidium
c) Batrachospermum
d) Porphyra

36) The sporogonium of Funaria grows
a) On soil
b) On the gametophyte but later becomes free
c) At the apex of the female shoot of the gametophyte
d) At the apex of the male shoot

37) The portion of the sporogonium of Funaria which anchors it into the female
gametophyte and absorbs food is the

a) Foot
b) Seta
c) Operculum
d) Apophysis

38) In Funaria rhizoids are
a) Unicellular
b) Multicellular unbranched with transverse septa
c) Multicellular branched with oblique septa
d) Unicellular multinucleate

39) Archegonium of Funaria has — neck canal cells
a) 4
b) 6-10
c) 2
d) One binucleate

40) Heterospory is found in
a) Funaria
b) Dryopteris
c) Marchantia
d) Selaginella

41) A part of the North Atlantic ocean is covered by free floating brown algae.
They belong to the genus

a) Dictyota
b) Alaria
c) Ectocarpus
d) Sargassum

42) In Pteridophytes, meiosis occurs when
a) Spores are formed
b) Prothallium is formed
c) Gametes are formed
d) Sex organs are formed

43) Prothallus represents the
a) Gametophytic phase in Pteridophytes
b) Sporophytic phase of Pteridophytes
c) Sporophytic phase in Gymnosperms
d) Sprophytic phase in Angiosperms

44) A living fossil is
a) Pinus
b) Ephedra
c) Cedrus
d) Cycas

45) The life cycle of Seleginella/Ferns/Moss is
a) Diplontic
b) Haplo-diplontic
c) Haplontic
d) Diplo-haplontic

46) Sporangia bearing leaves in Pteridophytes are called
a) Ramenta
b) Sori
c) Sporophylls
d) Indusium

47) The sperms of Selaginella reach the archegonia under chemotaxis of
a) Proteins
b) Sugars
c) Lactic acid
d) Malic acid

48) Sieved septa occur in
a) Bryophytes
b) Red algae
c) Some complex green algae
d) Some large brown algae

49) A gymnosperm having vessels is
a) Cedrus
b) Gnetum
c) Cycas
d) Pinus

50) The number of neck canal cells in the archegonium of Selaginella
is

a) Two
b) Four
c) One
d) Eight to ten

51) The conical/pyramidal/excurrent habit of Pinus is due to the
a) Competition among branches
b) Effect of auxins
c) Efficiency of water movement
d) Competition amongst adjacent trees

52) Female gametangia in Selaginella develop on
a) The main plant body
b) The apical cushion of the female gametophyte
c) The male gametophyte
d) Megasporophylls

53) Archegonium of Selaginella differs from that of Funaria in
a) Embedded venter
b) Absence of stalk
c) Short neck
d) All the above

54) The vegetative part of the male gametophyte of Selaginella is represented
by the

a) Prothallial cell
b) Androgonial cells
c) Jacket cells
d) All the above structures.

55) Selaginella/Fern/Pteridophyte differs from moss in having
a) An independent gametophyte
b) An independent sporophyte
c) Swimming antherozoids
d) Arechegonia

56) The male gametophyte of Selaginella is formed
a) Outside the microspore
b) Within the microspore
c) Partly outside the microspore
d) Partly within the microspore

57) In pteridophytes, the venter is
a) Enclosed by a jacket
b) Attached to a stalk below
c) Embedded in the body of the prothallus
d) Projecting out of the prothallus

58) The megaspore of Selaginella germinates to produce
a) Female gametes
b) Female gametangia
c) The female prothallus
d) The male prothallus

59) The neck of the archegonium in Selaginella is made of
a) four rows of cells with several cells in each row
b) Two tiers of four cells each
c) Four tiers of two cells each
d) Six rows of cells

60) Brown colouration of Phaeophyceae is due to excess
a) Fucoxanthin
b) Zeaxanthin
c) Phycoerythrin
d) Lycopene

61) Riccia belongs to liverworts because
a) It cures liver diseases
b) It poduces liver diseases
c) It is dorsiventral like the liver
d) It is filamentous

62) In Riccia the sporogonium is
a) Embedded
b) Projecting but sessile
c) Shortly stalked and projecting
d) Lateral

63) Sex organs of Riccia are
a) Projecting
b) Embedded
c) Occur in receptacles
d) Borne laterally

64) Sporogonium of Riccia is made up of
a) Foot and capsule
b) Foot, seta and capsule
c) Capsule only
d) Seta and capsule

65) Instead of elaters, the sporogonium of Riccia contains
a) Nurse cells
b) Pseudoelaters
c) Photosynthetic cells
d) Columella

66) Which of the following is a “bog moss”/ peat moss ?
a) Bryum
b) Polytrichum
c) Sphagnum
d) Taxithelium

67) Sphagnum is also called “Peat Moss” because it
a) Looks like peat
b) Grows in acidic marshes
c) Decays to form peat
d) Quickens fossilisation

68) Naked seeds are present in
a) Angiosperms
b) Gymnosperms
c) Spermatophyta
d) None of the above

69) Pollination in Pinus/Cycas is
a) Hydrophilous
b) Ornithophilous
c) Zoophilous
d) Anemophilous/entomophilous

70) In cycas, stamens are represented by
a) Microsporangial sori
b) Microsporangia
c) Microsporophylls
d) Male cones

71) Xylem in Gymnosperms lacks
a) Tracheids
b) Xylem parenchyma
c) Xylem fibres
d) Vessels

72) The gametophytic generation present in the Pinus seed is represented by
a) Perisperm
b) Testa
c) Embryo
d) Endosperm

73) A gymnosperm grown for its appearance is
a) Pinus
b) Picea
c) Araucaria
d) Cedrus

74) What is characteristic of gymnosperms?
a) Triploid endosperm
b) Absence of annual habit
c) Occurrence of minute flowers
d) Absence of strobili

75) Fertilisation in Pinus occurs
a) During the first year of the female cone
b) About a year after pollination
c) A few days before seed formation
d) The time of pollination

76) The structure which replaces the nucellus in Pinus ovule is
a) Embryo
b) Endosperm
c) Perisperm
d) None of the above

77) The structure which represents the future sporophyte in Pinus seed is
a) Endosperm
b) Perisperm
c) Embryo
d) None of these

78) The change which converts the ovule to the seed in Pinus involves
a) Formation of seed coats
b) Replacement of nucleus by endosperm
c) Formation of embryo
d) All the above

79) Resin is a product of
a) A fern
b) A conifer
c) A cycad
d) A monocot

80) The endosperm of Pinus is produced from the
a) Megaspore
b) Pollen grain
c) Oospore
d) Archegonium

81) The ovules of Pinus are present on the
a) Upper surface of ovuliferous scale
b) Lower surface of ovuliferous scale
c) Bract scale
d) Ovuliferous as well as bract scales

82) If the haploid number of chromosomes in a Gymnosperm is 6, their number
in the endosperm cell would be

a) 12
b) 24
c) 6
d) 36

83) The diploid parenchymatous mass of cells which constitutes the body of
the young ovule of Pinus is called the

a) Endosperm
b) Perisperm
c) Nucellus
d) Nucellar beak

84) The female gametophyte of Pinus differs from that of the angiosperm in having
a) Oosphere
b) Archegonia
c) Developed from megaspore
d) None of the above

85) A thallus refers to a plant body having
a) Vascular system
b) Stem and leaves but no roots
c) Root and stem but no leaves
d) No distinction of stem, leaves and roots

86) Which structure would help you to distinguish an archegonium of Funaria
from that of Pinus

a) Long neck
b) Several neck canal cells
c) Stalked venter
d) All the above

87) Example of the plant which bears seed but not fruit is
a) Mango
b) Selaginella
c) Pinus
d) Wheat

88) Green algae belong to phylum
a) Charophyta
b) Phaeophyta
c) Chlorophyta
d) Chrysophyta

89) Endosperm of Pinus represents the
a) Female gametophyte
b) Male gametophyte
c) Megasporangium
d) Microsporangium

90) Majority of the green algae occur in
a) Deep sea
b) Fresh water
c) Hot springs
d) Coastal waters

91) Ovule is called
a) Megasporangium
b) Microsporangium
c) Integumented microsporangium
d) Integumented megasporangium

92) Endosperm of Pinus is comparable to which structure of angiosperms?
a) Endosperm
b) Nucellus
c) Embryo sac
d) None

93) Pinus differs from angiospermic plants in the absence of
a) Flowers
b) Fruits
c) Enclosed seeds
d) All the above

94) Transfusion tissue, a modified vascular tissue is found in leaves of
a) Dryopteris and Selaginella
b) Pinus and cycas
c) Porella and Funaria
d) Dalbergia and Mangifera

95) Sea Weeds include
a) Chlorophycease and Chrophycease
b) Bacillariophyceae and Phaeophyceae
c) Phaeophyceae and Rhodophyceae
d) Chlorophyceae and Pheophyceae

96) Gonium possesses
a) Filamentous plant body
b) Large foliaceous body
c) Complex nonmotile colony
d) Simple flagellate colony

97) Red algae differs from green and brown algae in
a) Absence of chlorophyll a
b) Undifferentiated cells
c) Not having any flagellate state
d) All the above

98) Chlamydomonas differs from spirogyra and Ulothrix in having
a) Glycoprotein instead of cellulose in cell wall
b) Neither chlorophyll a nor chlorophyll b
c) No cell wall
d) Chlorophylla a and chlorophyll d

99) Chlamydomonas has
a) Multicellular diploid organisms
b) Unicellular haploid organisms
c) Multicellular haploid organisms
d) Unicellular diploid organisms

100) Anisogamy is characterised by fusion of
a) Two similar gametes
b) Two morphologically similar but physiologically different gametes
c) Two morphologically distinct gametes
d) One motile gamete and other nonmotile gamete

Answers

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