Reproduction Growth & Development MCQs Part II

1) When a seed is placed in a suitable medium for germination, by which of the following processes does water first enter into the seed coat?
a) Imbibition
b) Absorption
c) Osmosis
d) Root pressure

2) The swelling of a wooden door during the rainy season is due to
a) Endosmosis
b) Imbibition
c) Capillarity
d) Deplasmolysis

3) In the soil, the water available for the roots of plants is
a) Capillary water
b) Hygroscopic water
c) Gravitational water
d) Chemically bound water

4) Plants identical to the mother plants can be produced from
a) Its seeds
b) Stem cuttings
c) Its fruits
d) Hybridisation

5) Clones free from viruses can be obtained from an infected plant through
a) Cutting
b) Layering
c) Tip tissue culture
d) Grafting

6) Which of the following is not a method of vegetative propagation?
a) Sowing
b) Cutting
c) Layering
d) Grafting

7) Clones are a group of individuals obtained through
a) Self pollination
b) Vegetative propagation
c) Hybridisation
d) Cross pollination

8) Micropropagation is
a) Microtomy
b) Plant production from microspores
c) Propagation of microbes
d) The technique of obtaining new plants by tissue culture

9) Micropropagation is carried out by
a) Hybridisation
b) Genetic recombination
c) Parasexual mechanism
d) Tissue culture

10) Which method of vegetative propagation is more common in mangoes and jack?
a) Cutting
b) Layering
c) Grafting
d) All

11) Axillary buds are used to raise a crop of
a) Wheat
b) Rice
c) Groundnut
d) Sugarcane

12) Begonia reproduces vegetatively by
a) Vegetative buds
b) Adventitious buds
c) Leaf buds
d) Bulbils

13) Vegetative reproduction through offset is common in
a) Abtigonon
b) Eichhornia
c) Elodea
d) Amorphophallus

14) Which of the following regenerates with the help of layering?
a) Cactus
b) Rose
c) Mango
d) Jasmine

15) Stem cuttings are commonly used for propagation in
a) Cotton
b) Mango
c) Sugarcane
d) Lemon

16) In Amorphophallus, vegetative reproduction is carried out through
a) Bulbs
b) Offset
c) Corm
d) Rhizome

17) Scion is a term in relation to
a) Grafting
b) Palaeobotany
c) Embryology
d) Emasculation

18) A banana plant develops from a
a) Rhizome
b) Seed
c) Sucker
d) Stolon

19) In Agave, vegetative reproduction is carried out through
a) Bulbils
b) Rhizome
c) Stolon
d) Sucker

20) Vegetative growth (propagation) of potato is by
a) Rhizome
b) Tuber
c) Sucker
d) Bulb

21) Grafting is not possible in monocots because they
a) Have scattered vascular bundles
b) Have parallel venation in leaves
c) Lack cambium
d) Are herbaceous

22) A flower is a modified
a) Leaf
b) Root
c) Shoot
d) All (a) (b) (c)

23) Cauliflory is flowers produced
a) On old dormant buds
b) On young buds
c) On the axil
d) On the branch

24) A monocarpic plant is that which
a) Produces only one seed per fruit
b) Produces only one fruit in its cycle
c) Has only one carpel in its flower
d) Flowers only once in its life cycle

25) Which of the following is a polycarpic plant?
a) Pea (or Pisum)
b) Agave
c) Mango
d) Bamboo (Dendrocalamus)

26) Which of the following shows apocarpous condition?
a) Datura
b) Anona
c) Caesalpinia
d) Cotton

27) In monoecious plants
a) Male and female parts are borne by the same flower
b) Male and female parts are borne by different plants
c) Male and female parts are borne by the same plant but not by the same flower
d) Male, female and neuter flowers are borne by the same plant

28) Inferior ovary is present in
a) Compositae
b) Malvaceae
c) Mimosoidae
d) Solanaceae

29) When both male and female flowers are found on the same plant it is called
a) Unisexual
b) Bisexual
c) Monoecious
d) Dioecious

30) A complete flower is that flower which has
a) Calyx and corolla
b) Calyx, corolla and androecium
c) Corolla, androecium and gynoecium
d) Calyx, corolla, androecium and gynoecium

31) Which of the following has both male and female sex organs in the same flower?
a) Date palm
b) Nutmeg
c) Hibiscus
d) Cucurbita

32) A flower is said to be actinomorphic if it can be divided in two
a) Halves having sepals and petals in equal numbers
b) Exactly equal halves by any vertical section through centre
c) Similar halves by a single vertical section
d) Both A and C

33) The coloured and attractive part in Bougainvillea is the
a) Bract
b) Petal
c) Sepals
d) Stamen

34) The pappus is the modification of the
a) Corolla
b) Calyx
c) Bracts
d) Gynoecium

35) A ligulate corolla found in Compositae is also known as
a) Masked
b) Two-lipped
c) Strap-shaped
d) Wheel-shaped

36) A perianth is
a) When petals and stamens are not distinguishable
b) When only calyx is present
c) The outer part of flower in which calyx and corolla are not distinguishable
d) None of the above

37) Which of the following is considered equivalent to the perianth?
a) Glumes
b) Lodicules
c) Superior palea
d) Inferior palea

38) A flower which never opens and its pollen grains germinate inside the anther and their pollen tubes enter the carpels to fertilise the ovules is called
a) Polygamous
b) Cleistogamous
c) Cleistocarpic
d) Autogamous

39) Polyadelphous condition is related with
a) Calyx
b) Corolla
c) Androecium
d) Gynoecium

40) Diadelphous condition is present in
a) Pisum
b) Citrus
c) Bombax
d) Brassica

41) Syngenesious condition of stamens is found in
a) Labiatae
b) Solanaceae
c) Malvaceae
d) Asteraceae

42) Synandrium means fusion of
a) Only filaments
b) Only anthers
c) Both filaments and anthers
d) Part of the stamens

43) Epipetalous condition relates to
a) Aestivation of petals
b) Position of ovary
c) Stamens
d) Placentation

44) Anthers are versatile in
a) Oryza sativa
b) Hibiscus esculentus
c) Solanum tuberosum
d) Helianthus annus

45) Translator apparatus is found in
a) Mustard
b) Mango
c) Pea
d) Calotropis

46) Anthesis is
a) The opening of a flower bud
b) The pollen mother cell undergoing meiosis
c) The dehiscence of anthers
d) The stigma becoming receptive

47) Petaloid staminode is seen in
a) Cassia
b) Solanum
c) Caesalpinia
d) Canna

48) Naked male flowers with single stamen are found in
a) Head
b) Verticellaster
c) Cyathium
d) Hypanthodium

49) In angiosperms, an ovule represents the
a) Megasporophyll
b) Megasporangium
c) A megaspore
d) A megaspore mother cell

50) The ovule is attached to the placenta by a
a) Hilum
b) Funicle
c) Petiole
d) Pedicel

51) A gynobasic style is found in
a) Graminae
b) Labiatae
c) Compositae
d) Liliaceae

52) The axis developed between the androecium and gynoecium is termed as
a) Anthophore
b) Androphore
c) Gynophore
d) Gynandrophore

53) Subterranean cleistogamous flowers are found in
a) Ficus benghalensis
b) Commelina benghalensis
c) Adina cordifolia
d) Anthocephalus cadamba

54) The smallest flower is that of
a) Carica papaya
b) Nelumbo nucifera
c) Wolffia microscopica
d) Rafflesia arnoldi

55) The largest flower in the world is borne by
a) Cuscuta
b) Rafflesia
c) Loranthus
d) Drosera

56) The national flower of India is the
a) Rafflesia
b) Lotus
c) Rosa indica
d) Wolffia

57) An inflorescence is
a) A group of flowers
b) The arrangement of flowers
c) The arrangement of flowers on the floral axis
d) None of the above

58) The axis of inflorescence is called a
a) Pedicel
b) Petiole
c) Peduncle
d) Thalamus

59) The most important function of an inflorescence is to help in
a) Forming large number of fruits
b) Attracting insects for cross-pollination
c) Dispersal of seeds
d) Release of pollen grains

60) An inflorescence bearing sessile, bisexual flowers in acropetal succession is called a
a) Spadix
b) Spike
c) Corymp
d) Raceme

61) The inflorescence in Gramineae (Poaceae) is a
a) Raceme
b) Spike
c) Spikelet
d) Umbel

62) In mulberry, the inflorescence is
a) Catkin
b) Capitulum
c) Raceme
d) Spadix

63) In a spadix inflorescence the spathe encloses a
a) Raceme
b) Spike
c) Catkin
d) Umbel

64) In Musaceae, the inflorescence is
a) Spike
b) Head
c) Capitulum
d) Spadix

65) Cauliflory is the
a) Formation of flowers in clusters
b) Production of flowers on young branches
c) Production of flowers on the old stem from new buds
d) Formation of plants from epiphyllous buds

66) In the onion, the inflorescence is
a) Umbel
b) Catkin
c) Raceme
d) Corymb

67) Compound umbels are seen in
a) Foeniculum
b) Coriandrum
c) Daucus corota
d) All of the above

68) An inflorescence in which flowers arise from different points but reach the same level is called
a) Catkin
b) Corymb
c) Umbel
d) Spadix

69) In which of the following inflorescences do the flowers appear to arise from one point with the same level at the top?
a) Umbel
b) Capitulum
c) Corymb
d) Raceme

70) An inflorescence with a flattened floral axis in the form of a receptacle having a whorl of involucral bracts surrounding it is known as
a) Head
b) Umbel
c) Corymb
d) Raceme

71) Three types of flowers are usually found in
a) Verticillaster
b) Cyathium
c) Capitulum
d) Hypanthodium

72) The most highly evolved type of inflorescence is
a) Hypanthodium
b) Spadix
c) Polychasial cyme
d) Capitulum

73) Zig-zag development of inflorescence axis is an example of
a) Helicoid cyme
b) Verticillaster
c) Scorpioid cyme
d) Umbel

74) Hypanthodium refers to a specialized type of
a) Thalamus
b) Ovary
c) Fruit
d) Inflorescence

75) Hypanthodium is a characteristic infloresence of
a) Ficus
b) Pine apple
c) Mulberry
d) Poinsettia

76) Cyathium is a type of
a) Flower
b) Inflorescence
c) Algae
d) Bacterium

77) Cyathium inflorescence is found in
a) Morus
b) Dorstenia
c) Ficus/Ricinus
d) Euphorbia

78) In cyathium inflorescence, the ratio of male/female flowers is
a) One/one
b) Many/many
c) Many/one
d) One/many

79) Cyathium inflorescence is characteristic of the family
a) Compositae
b) Euphorbiaceae
c) Cruciferae
d) Solanaceae

80) Cyathium and hypanthodium inflorescences resemble each other in possessing
a) Unisexual flowers
b) Apical pore
c) Petaloid bracts
d) Nectar glands

81) Which is the most logical sequence with reference to the life cycle of angiosperms?
a) Germination, endosperm formation, seed dispersal, double fertilization
b) Cleavage, fertilization, grafting, fruit formation
c) Pollination, fertilization, seed formation, germination
d) Maturation, mitosis, differentiation, fertilization

82) In which of the following plants is water not necessary for fertilization?
a) Funaria
b) Fern
c) Pisum sativum
d) Vallisneria

83) If the leaf cell has 8 chromosomes, it is most likely that the
a) Zygote will have 16 chromosomes
b) Zygote will have 4 chromosomes
c) Gametes will have 4 chromosomes
d) Gametes will have 8 chromosomes

84) A pollen grain is considered to be one of the following:
a) Zygote
b) Spore
c) Female gametophyte
d) Male gametophyte

85) Development and formation of pollen grains in the anther of the stamen is known as
a) Pollination
b) Fertilization
c) Microsporogenesis
d) Megasporogenesis

86) An anther is generally composed of
a) Two sporangia
b) Three sporangia
c) Four sporangia
d) Only one sporangium

87) The site of meiotic division in higher plants is
a) Vegetative buds
b) Root tip cells
c) Stomatal cells
d) Spore mother cells

88) In plants, meiosis occurs in the
a) Anther
b) Root tip
c) Cambium
d) Pollen grain

89) A pollen grain is best defined as
a) Partially developed embryo
b) Partially developed male gametophyte
c) Spore mother cell
d) Male sperm cell

90) In angiosperms, meiosis occurs when the
a) Seeds germinate
b) Flowers are formed
c) Pollen grains are formed
d) Seeds are formed

91) How many pollen grains can be formed after meiotic division in 10 microspore mother cells?
a) 80
b) 40
c) 20
d) 10

92) The number of meiotic divisions necessary to produce 1000 pollen grains
a) 200
b) 250
c) 500
d) 1000

93) In angiosperms how may microspore mother cells are required to produce 100 pollen grains?
a) 25
b) 50
c) 75
d) 100

94) After culturing the anther of a plant, a few diploid plants were obtained along
with haploid plants. Which of the following parts might have given rise to
diploid plants?

a) Vegetative cell of pollen
b) Exine of pollen wall
c) Cells of anther wall
d) Cells of the microspore

95) The male gametophyte in angiosperms is represented by the
a) Nucellus
b) Stamens
c) Microspore (pollen grain)
d) Microsporangium

96) 256 microspores will be formed as a result of reduction division in
a) 64 microspore mother cells
b) 128 microspore mother cells
c) 256 microspore mother cells
d) 512 microspore mother cells

97) Male gametes are formed from the
a) Generative cell
b) Tube cell
c) Body cell
d) Prothallial cell

98) In monocots, the male gametophyte is the
a) Microspore
b) Megaspore
c) Tetrad
d) Nucellus

99) Even after killing the generative cell with a laser beam, the pollen grain of a flowering plant germinates and produces normal pollen tube because
a) The laser beam stimulates pollen germination and pollen tube growth
b) The vegetative cell has not been damaged
c) The contents of the killed generative cell permit germination and pollen tube growth
d) The laser beam does not damage the region from which pollen tube emerges

100) Ubisch bodies are associated with the development of the
a) Embryo sac
b) Embryo
c) Pollen grains
d) Endosperm

Answers

hourlybook

Related Posts
Leave a reply
What is the capital of Egypt ?