Reproduction Growth & Development MCQs Part III

1) The germ pore is the region where the exine is
a) Thin
b) Uniform
c) Thick and uniform
d) Absent

2) The pollen grains in angiosperms are released at the stage when they are
a) 1-celled
b) 2-celled
c) 3-celled
d) 2 or 3-celled

3) One of the most resistant biological materials known is
a) Hemicellulose
b) Lignin
c) Sporopollenin
d) Lignocellulose

4) The stalk of the ovule is called
a) Funicle
b) Caruncle
c) Nucellus
d) Pedicle

5) The point where the funicle joins with the ovule is known as the
a) Chalaza
b) Hilum
c) Integument
d) Micropyle

6) The archesporium in an ovule is
a) Single celled and terminal in origin
b) Single celled and hypodermal in origin (situated below nucellar epidermis)
c) Single celled and lies in the centre of ovule
d) None of the above

7) Meiotic division in an ovule takes place in the
a) Megaspore
b) Archesporium
c) Nucellus
d) Megaspore mother cell

8) Which one is the female gametophyte?
a) Embryo
b) Embryo sac
c) Endosperm
d) Synergid

9) The embryo sac is found in the
a) Endosperm
b) Embryo
c) Ovule
d) Seed

10) The embryo Sac is (or represents)
a) Megaspore mother cell
b) Megagametophyte
c) Megasporophyte
d) Megasporangium

11) In an embryo sac of a typical angiosperm there are
a) Egg, synergids and antipodals
b) Egg, synergids, polar nuclei and antipodals
c) Egg, synergids, central cell and polar nuclei
d) Egg, synergids and secondary cell

12) In Angiosperms, the functional megaspore of a linear tetrad is the
a) First nearest to the micropyle
b) Second from micropyle
c) Third from micropyle
d) Fourth from micropyle

13) In angiosperms, endosperm is formed by
a) growth of the embryo sac
b) division of fused polar nuclei
c) fusion of fused polar nuclei and male gamete
d) division of fused synergids and male gamete

14) A typical angiospermic embryo sac is usually
a) One-celled
b) Two-celled
c) Four-celled
d) Seven-celled

15) The female gametophyte of a typical dicot at the time of fertilization is
a) 8-celled
b) 7-celled
c) 6-celled
d) 4-celled

16) An embryo sac is called monosporic when it develops from
a) All the four megaspores
b) Only from two functional megaspores
c) Three megaspores
d) One of the megaspores out of the four megaspores which are derived from meiotic division of megaspore mother cell

17) Meiotic division in an ovule takes place in the
a) Nucellus
b) Megaspore mother cell
c) Megaspore
d) Archesporium

18) If the cells in the root of an Angiosperm have 12 chromosomes, 6 chromosomes will be present in the
a) Synergid
b) Endosperm cell
c) Leaf cell
d) Cotyledonary cell

19) Which of the following pairs of plant parts are both haploid?
a) Antipodal cells and egg cell
b) Nucellus and primary endosperm nucleus
c) Nucellus and antipodal cells
d) Antipodal cells and megaspore mother cell

20) Perisperm is formed by the
a) Integument
b) Epidermis
c) Nucellus
d) Endosperm

21) Synergids are
a) Tetraploid
b) Triploid
c) Diploid
d) Haploid

22) Pollination is best defined as the
a) Germination of pollen grains
b) Visiting of flowers by insects
c) Transfer of pollen from anther to stigma
d) Growth of pollen tube in ovule

23) Pollination is characteristic of
a) Bryophytes
b) Fungi
c) Angiosperms
d) Pteridophytes

24) Pollination characteristically occurs in
a) Angiosperms and Fungi
b) Angiosperms and Gymnosperms
c) Pteridophytes and Angiosperms
d) Bryophytes and Angiosperms

25) Which prevents self-pollination?
a) Herkogamy
b) Dichogamy
c) Self sterility
d) All the above

26) The part of the gynoecium which receives the pollen is called the
a) Stigma
b) Style
c) Ovule
d) Ovary

27) When the pollen of a flower is transferred to the stigma of another flower of the same plant, the pollination is referred to as
a) Xenogamy
b) Geitonogamy
c) Autogamy
d) Allogamy

28) A pollen grain is best defined as
a) A partially developed embryo
b) A partially developed male gametophyte
c) A spore mother cell
d) A male sperm cell

29) A bisexual flower which never opens in life is known as
a) Homogamous
b) Heterogamous
c) Dichogamous
d) Cleistogamous

30) Cleistogamous flowers are
a) Open male flowers
b) Open bisexual flowers
c) Male flowers that never open
d) Bisexual flowers that never open

31) Progeny resulting from cross-pollination
b) Are homozygous and show phenotypic uniformity
c) Are always sterile
d) Always show recessive characters

32) The maturation of stamens and pistils at different times in the same flower is called

The maturation of male (anthers) and female (stigma) structures at different
times in the same flower is called

a) Dichogamy
b) Heterostyly
c) Dichotomy
d) Heterospory

33) A cleistogamous condition is present in
a) Brassica
b) Solanum tuberosum
c) Commelina
d) Allium cepa

34) Dichogamy favouring cross-pollination is a type of floral mechanism where
a) Anthers and stigma are placed at different levels
b) Stamens and stigmas mature at different times
c) Structure of anther and stigma act as barrier
d) Pollen is unable to germinate on its own stigma

35) Entomophily is pollination by
a) Animals
b) Insects
c) Air
d) Water

36) Entomophilous flowers have
a) No pollen
b) Dry pollen grains with smooth surfaces
c) Sticky pollen grains with rough surfaces
d) Large quantities of pollen

37) In Ficus (peepal), the pollination is effected by
a) Insects
b) Air
c) Water
d) Birds

38) Hydrophily is best demonstrated by
a) Nelumbium
b) Vallisneria
c) Eichhornia
d) Nymphaea

39) Zoophily is pollination by
a) Animals
b) Water
c) Wind
d) Insects

40) In bisexual flowers when the gynoecium matures earlier than the androecium,
it is called

a) Protandry
b) Protogyny
c) Heterogamy
d) Autogamy

41) Anemophily is pollination by
a) Air
b) Water
c) insects
d) Animals

42) In bisexual flowers, when the androecium matures earlier than gynoecium,
it is called

a) Protogyny
b) Protandry
c) Autogamy
d) Allogamy

43) Translator mechanism is found in
a) Ocimum
b) Pisum
c) Calotropis
d) Yucca

44) Malacophily is the name given to pollination by
a) Bats
b) Birds
c) Snails
d) Insects

45) The chief pollinators of our agrihorticulture crops are
a) Bees
b) Moths
c) Beetles
d) Butterflies

46) Maize is
a) Self-pollinated
b) Cross-pollinated by insects
c) Cross-pollinated by wind
d) Cross-pollinated by rain

47) Pollination by ants is called
a) Malacophily
b) Myrmicophily
c) Entomophily
d) Ornithophily

48) Fertilization is the process of
a) Fusion of one male gamete with the egg
b) Transfer of pollens from anther to stigma
c) Fusion of male nuclei with polar nuclei
d) Formation of seed from ovule

49) Fertilization in angiosperms is the
a) Fusion of two similar spores
b) Fusion of two dissimilar flowers
c) Union of stamens of unequal length
d) Fusion of two dissimilar gametes

50) Syngamy refers to
a) Fusion of one of the sperms with secondary nucleus
b) Fusion of the sperms with the egg
c) Fusion of one of the sperms with the egg and other with the secondary nucleus
d) Fusion of one of the sperms with synergid

51) Fusion of one male gamete with the egg cell and fusion of another male gamete
with the secondary nucleus is called

a) Fertilisation
b) Double fertilisation
c) Triple fertilisation
d) Karyogamy

52) In angiosperms, triple fusion is required for the formation of the
a) Seed coat
b) Fruit wall
c) Embryo
d) Endosperm

53) Double fertilization is characteristic of
a) Angiosperms
b) Algae
c) Gymnosperms
d) Bryophytes

54) Double fertilization was discovered (or first observed) by
a) Karl Schnarf
b) P. Maheshwari
c) S.G. Nawaschin
d) Hofmeister

55) Karyogamy is
a) Fusion of gametic protoplast
b) Fusion of gametic nuclei
c) Delayed mitosis
d) Delayed meiosis

56) The fusion product of the polar nuclei and the male gamete is
a) Triple fusion
b) Primary endosperm nucleus
c) Zygote
d) Secondary nucleus

57) In double fertilisation, the male gamete and the secondary nucleus give rise
to the

a) Embryo
b) Endosperm
c) Gametes
d) Egg

58) External water is not essential for fertilization in
a) Thallophyta
b) Bryophyta
c) Pteriodophyta
d) Spermatophyta

59) The pollen tube at the time of entering the embryo sac has
a) Four gametes
b) Three male gametes
c) Two male gametes
d) One gamete nucleus

60) The movement of the pollen tube towards the embryo sac is
a) Thigmotactic
b) Thermotactic
c) Chemotactic
d) Phototactic

61) When the pollen tube enters through the integuments it is called
a) Chalazogamy
b) Mesogamy
c) Isogamy
d) Porogamy

62) Heteroblastic development refers to
a) Vegetative growth and flowering in different seasons
b) An adult organ which is physiologically different from juvenile organs
c) Male and female sex organs on the same plant
d) Two types of spores in the same plant

63) Which of the following tissues contains fat in large quantities?
a) Tuber of potato
b) Embryo of pea
c) Endosperm of coconut
d) Fibres of cotton

64) In angiosperms, the endosperm is (or endosperms of higher plants are mainly)
a) Triploid 3n
b) Diploid 2n
c) Haploid n
d) Polyploid

65) An example of a triploid tissue is the
a) Endosperm of Lily
b) Endosperm of Cycas
c) Protonema of moss
d) Fern prothallus

66) An example of a triploid tissue is
a) Onion root
b) Fern prothallus
c) Maize endosperm
d) Onion leaf

67) The milky water of a green coconut is the
a) Liquid nucellus
b) Liquid of female gametophyte
c) Liquid endosperm
d) Liquid chalaza

68) In albuminous seeds, the food is stored in the
a) Testa
b) Plumule
c) Cotyledon
d) Endosperm

69) “Ruminate endosperm” is commonly found in the seeds of
a) Euphorbiaceae
b) Cruciferae
c) Annonaceae (or Areca nut)
d) Compositae

70) Morphologically the white fluffy edible mass in maize is the
a) Seed coat
b) Seed
c) Endosperm
d) Pericarp

71) In angiosperms, free nuclear division occurs during
a) Pollen grain development
b) Embryo formation
c) Endosperm formation
d) Flower formation

72) Ruminate endosperm is a characteristic feature of
a) Arecanut
b) Cucurbita
c) Rice
d) Wheat

73) If the diploid chromosome number in a flowering plant is 12, then 6 chromosomes
will be present in

a) Cotyledonary cells
b) Endosperm cells
c) Synergids
d) Leaf cells

74) If the endosperm of an angiosperm has 24 chromosomes what would be the number
of chromosomes in the megaspore mother cell of the same plant?

a) 8
b) 16
c) 24
d) 32

75) If the endosperm mother cell of an angiosperm plant has 24 chromosomes,
the same in the MMC will be

a) 12
b) 48
c) 16
d) 24

76) After fertilization, the seed coats develop from the
a) Integuments
b) Embryo sac
c) Chalaza
d) Ovule

77) When a diploid female plant is crossed with a tetraploid male, the ploidy
of endosperm cells in the resulting seed is?

a) Diploid
b) Triploid
c) Tetraploid
d) Pentaploid

78) Parthenogenesis is the
a) Development of a fruit without hormones
b) Development of a fruit after fertilization
c) Development of the egg without fertilization
d) Development of an embryo after fertilization

79) Parthenogenesis is most commonly seen in
a) Grapes
b) Litchi fruits
c) Apples
d) Mangoes

80) The formation of fruits without fertilization is known as
a) Parthenocarpy
b) Parthenogenesis
c) Polyembryony
d) Polygamy

81) An example of naturally occurring parthenocarpic fruit is the
a) Guava
b) Mango
c) Banana
d) Jack

82) Seedless fruits are of no use in
a) Grapes
b) Banana
c) Coconut
d) Tomato

83) Apomixis in plants means the development of a plant
a) From stem cuttings
b) From root cuttings
c) Without fusion of gametes
d) From the fusion of gametes

84) A nucellar embryo is
a) Apomictic haploid
b) Amphimictic haploid
c) Apomictic diploid
d) Amphimictic diploid

85) The best example of polyembryony is
a) Cycas
b) Cocus
c) Citrus
d) Capsicum

86) The characteristic fruit of the family Cruciferae is
a) Capsule
b) Siliqua
c) Legume
d) Berry

87) The fruit is a nut in
a) Calotropis
b) Anacardium
c) Brassica
d) Datura

88) A berry is a fruit which is
a) Fibrous and single-seeded
b) Fleshy and single-seeded
c) Fleshy and multi-seeded
d) Dry and multi-seeded

89) A drupe is recognized by its
a) Stony endocarp
b) Stony mesocarp
c) Fleshy seed coat
d) Thin seed coat

90) A caryopsis is a fruit
a) That dehisces to expose seeds
b) That does not have fruit wall
c) Which is fleshy and contains many seeds
d) In which the fruit wall and the seed coat have fused

91) Lomentum is a term used to describe a kind of
a) Seed
b) Inflorescence
c) Outgrowth from seed
d) Dry fruit

92) The mature fruit of Calotropis is a
a) Siliqua
b) Follicle
c) Nut
d) Berry

93) The fruit of castor is
a) Regma
b) Cremocarp
c) Carcerulus
d) Lomentum

94) A dry, one-celled and one-seeded fruit developing from a bicarpellary, inferior
ovary often with persistent pappus is termed as a

a) Nut
b) Cypsela
c) Caryopsis
d) Achene

95) A carpel develops into a
a) Plant
b) Seed
c) Fruit
d) Flower

96) The most important foods are derived from
a) Roots
b) Fruits
c) Stems
d) Leaves

97) Which of the following is not a fruit?
a) Cucumber
b) Tomato
c) Potato
d) Pumpkin

98) Fruits are not found in gymnospermous plants because
a) They are seedless plants
b) They are not pollinated
c) They have no ovary
d) The process of fertilization does not take place in them

99) A true fruit develops from a/an
a) Ovary
b) Thalamus
c) Petals
d) Receptacle

100) A false fruit develops from the
a) Ovary
b) Parthenogenetic seed
c) Thalamus
d) None of the above



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