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Botany > Sexual Reproduction In Angiosperms > Flashcards

Sexual Reproduction In Angiosperms Flashcards

1
Q

Plants with 1 ovule

A

Mango, rice, wheat

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2
Q

Which plant has Edible integument and what is it called?

A

Lichi, Aril

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3
Q

What is androphore?

A

Elongated internode between corolla and androecium.

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4
Q

Which plant has Caruncle and what is it’s utility

A

Castor, attracts insects for dispersal

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5
Q

Junction between ovule and funicle

A

Hilum

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6
Q

Part of Funicle fused with ovule is called

A

Raphe

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7
Q

Outgrowth from funicle or placenta that guides pollen tube

A

Obturator

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8
Q

Plants with syncarpous gynoecium

A

Hibiscus, papavar/poppy

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9
Q

Free carpels are called

And their examples are?

A

Apocarpous

Lotus, rose, michella

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10
Q

Layers that are intact in a mature anther

A

Epidermis and endothecium

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11
Q

Shape of generative cell

A

Spindle/ fusiform shaped

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12
Q

Generative cell divides into?

A

2 non-motile male gametes

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13
Q

In 60•/. Plants families pollen grain is released in the ____ stage

A

2- celled stage

Vegetative/tube cell and generative/germ cell

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14
Q

Female gametophyte

A

Embryo sac

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15
Q

Microsporophyll

A

Androecium

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16
Q

Microsporophyll

A

Androecium

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17
Q

Example of Orthrotropus

A

Polygonum

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18
Q

Most common type of ovule in angiosperms

A

Anatropus

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19
Q

1 megaspore mother cell forms how many megaspores. How many meiosis/mitosis take place in the process?

A 
1 MMC forms 1 megaspore tetrad linear.
1 meiosis (meiosis 1+ meiosis 2) takes place
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20
Q

In a megaspore tetrad linear which end gives the functional megaspore

A

Chalazal end

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21
Q

Monosporic development in plants like

A

Polygonum and capsella

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22
Q

Type of ovule in capsella

A

Campylotropus

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23
Q

Number of meiosis/mitosis to form mature female gametophyte from a functional megaspore

A

3 mitosis

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24
Q

Number of cells in a mature megagametophyte?

Number of nucleus?

A

7 celled

8 nucleated

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25
Q

Haploid polar nuclei fuse to form?

A

Diploid secondary nucleus just before fertilisation

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26
Q

Egg aparatus is made up of

A

Haploid Egg cell + halpoid synergids

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27
Q

Filliform appartus is found in

A

Synergids

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28
Q

Egg appartus present at which end of embryo sac

A

Micropyle

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29
Q

Type of pollination in which the plant is genetically self pollinated but functionally and ecologically cross pollinated

A

Geitonogamy

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30
Q

Types of pollination that cause inbredding depression

A

Autogamy, geitonogamy

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31
Q

Type of pollination where flowers are from different plants

A

Xenogamy

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32
Q

What is Cleistogamous and what type of pollination occurs in it?

A

Flowers that dont open

Autogamy

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33
Q

Plants in which autogamy is rare

A

Chasmogamous (flowers that open)

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34
Q

Pollination of a flower by a different flower in the same plant is known as

A

Geitonogamy

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35
Q

Meiosis and mitosis required for 50 megagametophyte

A

50 meiosis + 150 mitosis

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36
Q

In a mature embryo sac, cell wall formation occurs for how many nuclei?

A

6

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37
Q

Antipodals are present at which end

A

Chalazal end

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38
Q

Type of ovule in which ovule is surrounded by funicle by 360⁰

A

Circinotropus

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39
Q

Type of ovule where the embryo sac is horse shoe shaped

A

Amphitropus

40
Q

Type of ovule where the ovule body is at 90⁰ to the funicle

A

Hemitropus/horizontal

41
Q

Nucellus from which end of ovule differenciate to form megaspore mother cell

A

Microphyle

42
Q

Formation of megaspore(n) from megaspore mother cell (2n)

A

Megasporogenesis

43
Q

Ploidy of nucellus

A

Diploid

44
Q

Examples of plants with peripsperm

A

Beetroot, castor, black pepper

45
Q

Plants with both cleistogamous as well as chasmogamous flowers

A

Viola (common pansy) , Commelina, Oxalis

46
Q

Dominant biotic pollinator

A

Bee

47
Q

Floral rewards given to animals to aid in pollination

A

Pollen grain, nector, safe place to lay eggs

48
Q

Flower that provides safe place to lay eggs as a floral reward

A

Amorphophallus (6 ft in height)

49
Q

Insects that consume pollen/nector but without bringing about pollination are known as

A

Pollen/nector robbers

50
Q

Adaptations for insect pollinated flowers

A

Large, colorful, fragrant, rich in nector

51
Q

Pollen grains of water pollinated species are protected from wetting by a

A

Mucilaginous covering

52
Q

Both Wind and water pollinated flowers are not very colorful and do not produce nector.
T/F ?

A

True

53
Q

How many genere of plants are water pollinated

A

30

54
Q

Examples of water pollinated plants

A

Vallisneria, Hydrilla, Zostera

55
Q

Plant with Longest pollen grain

A

Zostera (ribbon-like)

56
Q

Not all aquatic plants use water for pollination

T/F ?

A

True

57
Q

Aquatic plants that are not water pollinated

A

Water lily, Water Hyacinth

58
Q

Water lily is pollinated by?

A

Insects or wind

59
Q

Most common abiotic agent of pollination

A

Wind (Anaemophily)

60
Q

Most common biotic agent of pollination

A

Insects (Antemophily)

61
Q

Examples of Larger animals that act as pollinators

A

Primates (lemurs), reptiles (gecko lizards, garden lizards), arboreal rodents

62
Q

Adaptation of a plant which is pollinated by beetles or flies

A

Secreation of foul odours

63
Q

Wind pollination is most common in ?

A

Grasses

64
Q

Examples of plants that are wind pollinated

A

Corn, grasses family (poaceae, graminae)

65
Q

Adaptations of pollen grain in wind pollinated plants

A

Light and non sticky

66
Q

Only type of pollination which during pollination brings genetically different types of pollen grains to stigma

A

Xenogamy

67
Q

Type of Pollination which is functionally cross pollinated, involving a pollinating agent but genetically similar to autogamy

A

Geitonogamy

68
Q

Seed setting is assured in

A

Cleistogamous

69
Q

Flowers that are invariably autogamous

A

Cleistogamous

70
Q

Flowers in which autogamy is rare

A

Chasmogamous

71
Q

Pollination by bats is known as

A

Chiropterophily

72
Q 
Pollination by-
Birds
Ants & termites
Snakes
Snails
Animals
A 
Orthnithophilly
Myermicrophilly
Ophiophilly
Malacophilly
Zoophilly
73
Q

Adaptations for self pollination

A
  • Monocliny (bisexual/ hermaphrodite)
  • Homogamy
  • Cleistogamous flower
74
Q

Examples of monoecious plants

A

Maize, wheat, coconut, castor, cucurbits

75
Q

Plants which have male and female flowers in separate plants are known as

A

Dioecious

76
Q

Examples of dioecious plants

A

Papaya, Date palm

77
Q

Type of pollination that can place in self sterile plants

A

Xenogamy

78
Q

Outbredding devices

A
  • Dicliny (unisexual flower)
  • Chasmogamous
  • Heterostyly
  • Dichogamy
  • self incompatibility/ self sterility
79
Q

Condition when anther devolops before stigma

A

Protoandry

80
Q

Condition where the stigma becomes receptive first

A

Protogyny

81
Q

Type of devolopment megaspore in angiosperms

A

Monosporic devolopment

82
Q

Ovule of angiosperm is equivalent to

A

Megasporangium

83
Q

Proximal end of filament is attached to

A

Thalamus , petal or tepals

84
Q

Floriculture is ?

A

The breeding, cultivating and marketing of flowers

85
Q

Plants that are monocarpic and perennial

A

Bamboo -50 to 100 yrs

Strobilanthus kunthiana- 12 yrs

86
Q

Advertising flag

A

Massaenda plant

87
Q

Pollen structure with sculpturing design

A

Exine

88
Q

Due to which chemical deposition pollen grains are well preserved as fossils

A

Sporopollenin

89
Q

Ploidy of cells of a tetrad

A

Haploid

90
Q

A multicarpellary, apocarpous gynoecium is found in

A

A Lo R Mi (lotus, rose and michella

91
Q

Chemical essential for growth of pollen tube is

A

Boron

92
Q

Pollen tube shows ___ growth

A

Apical

93
Q

Pollen tube shows ___ movement towards ____

A

Chemotropic/ chemotactic, synergids

94
Q

Characteristics of orthnithophillus flowers

A
  • Charming color (yellow)
  • large flower
  • nector
  • no fragrance
95
Q

Characteristics of chirepterophillous flowers

A
  • strong fragrance
  • dull flowers
  • rich in nectar

Botany (1 decks)

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