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Morphology Of Flowering Plants > The Flower > Flashcards

The Flower Flashcards

1
Q

reproductive unit of angiosperms

A

flower

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2
Q

four whorls

A

calyx
corolla
androecium
gynoecium

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3
Q

stalk of flower is called

A

pedicel

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4
Q

the four whorls are attached to the swollen end of pedicel called

A

thalamus / receptacle

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5
Q

accessory whorls

A

calyx
corolla

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6
Q

reproductive whorls

A

androecium
gynoecium

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7
Q

in some flowers like _______, the calyx and corolla are not distinct and are termed as _______

A

lilies
perianth

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8
Q

when a flower has both androecium and gynoecium

A

bisexual

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9
Q

when a flower has only androecium or gynoecium

A

unisexual

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10
Q

two symmetries of flowers

A

radial
bilateral

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11
Q

when a flower is radially symmetrical, it is called

A

actinomorphic

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12
Q

when a flower is bilaterally symmetrical, it is called

A

zygomorphic

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13
Q

examples of actinomorphic flowers

A

mustard
datura
chilli

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14
Q

examples of zygomorphic flowers

A

pea
gulmohar
bean
cassia

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15
Q

asymmetry is seen in which flower

A

canna

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16
Q

types of flowers based on number of petals

A

trimerous
tetramerous
pentamerous

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17
Q

what is a bract

A

reduced leaf at base of pedicel

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18
Q

flowers with bracts

A

bracteate

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19
Q

flowers without bracts

A

ebracteate

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20
Q

position of gynoecium and other parts in hypogynous flower

A

gynoecium at highest position, other parts below it

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21
Q

ovary is said to be _______ in hypogynous flowers

A

superior

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22
Q

examples of hypogynous flowers

A

mustard
china rose
brinjal

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23
Q

where is gynoecium situated in perigynous flowers
what about other parts

A

gynoecium is situated in the centre
other parts are on the rim of thalamus almost at same level

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24
Q

ovary is said to be ____________ in perigynous flowers

A

half inferior

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25
Q

examples of perigynous flowers

A

plum
rose
peach

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26
Q

where are gynoecium and other parts in epigynous flower

A

ovary is enclosed inside the thalamus
other parts rise above ovary

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27
Q

ovary is said to be __________ in epigynous flowers

A

inferior

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28
Q

examples of epigynous flowers

A

guava
cucumber
ray florets of sunflower

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29
Q

outermost whorl

A

calyx

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30
Q

members of calyx are called

A

sepals

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31
Q

function of sepals

A

protect the flower in bud stage

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32
Q

calyx is called ______________ if sepals are united

A

gamosepalous

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33
Q

calyx is called __________ if sepals are free

A

polysepalous

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34
Q

members of corolla

A

petals

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35
Q

why are petals brightly coloured

A

to attract insects for pollination

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36
Q

corolla is called ____________ if petals are united

A

gamopetalous

37
Q

corolla is called ___________ if sepals are free

A

polypetalous

38
Q

shapes of corolla

A

tubular
bell-shaped
funnel-shaped
wheel-shaped

39
Q

what is aestivation

A

arrangement of sepals with respect to sepals
or
arrangement of petals with respect to petals

40
Q

four types of aestivation

A

valvate
twisted
imbricate
vexillary

41
Q

aestivation when sepals / petals just touch each other without overlapping

A

valvate

42
Q

example of valvate aestivation

A

calotropis

43
Q

aestivation if one end is overlapping and other end is getting overlapped

A

twisted

44
Q

examples of twisted aestivation

A

china rose
lady’s finger
cotton

45
Q

if petals or sepals overlap each other but not in any particular direction, aestivation is

A

imbricate

46
Q

examples of imbricate aestivation

A

gulmohar
cassia

47
Q

in vexillary aestivation,
largest petal _____________ overlaps two lateral petals ____________ which in turn overlap two smallest anterior petals __________

A

standard
wings
keel

48
Q

examples of vexillary aestivation

A

pea
bean

49
Q

vexillary aestivation is also known as

A

papilonaceous aestivation

50
Q

members of androecium

A

stamens

51
Q

each stamen consists of

A

anther
filament / stalk

52
Q

how many lobes do each anther have

A

two

53
Q

each lobe of anther has how many chambers

A

two

54
Q

the two chambers in a lobe of anther is called

A

pollen sacs

55
Q

sterile stamen is called

A

staminode

56
Q

when stamens are attached to petals

A

epipetalous

57
Q

example of epipetalous stamen

A

brinjal

58
Q

when stamens are attached to perianth

A

epiphyllous

59
Q

free stamens are called

A

polyandrous

60
Q

stamens are united into one bunch or bundle

A

monoadelphous

61
Q

example of a monoadelphous flower

A

china rose

62
Q

stamens are in two bundles

A

diadelphous

63
Q

example of a diadelphous flower

A

pea

64
Q

stamens are in more than two bundles

A

polyadelphous

65
Q

example of a polyadelphous flower

A

citrus

66
Q

variation in length of filaments is seen in

A

salvia
mustard

67
Q

members of gynoecium

A

carpels

68
Q

three parts of carpel

A

stigma
style
ovary

69
Q

receptive surface for pollen grains

A

stigma

70
Q

in ovary, ovules are attached to

A

placenta

71
Q

more than one carpels and they are free

A

apocarpous

72
Q

example of apocarpous flower

A

lotus
rose

73
Q

when carpels are fused

A

syncarpous

74
Q

examples of syncarpous flower

A

mustard
tomato

75
Q

after fertilisation, _________ develop into seeds and __________ matures into fruit

A

ovules
ovary

76
Q

placentation is

A

arrangement of ovules within ovary

77
Q

types of placentation

A

marginal
axile
parietal
basal
central
free central

78
Q

placenta forms a ridge along ventral suture of ovary

A

marginal placentation

79
Q

example of marginal placentation

A

pea

80
Q

placenta is axial and ovules are attached to it in a mutlilocular ovary

A

axile placentation

81
Q

example of an axile placentation

A

china rose
tomato
lemon

82
Q

ovules develop on inner wall of ovary or peripheral part

A

parietal placentation

83
Q

example of parietal placentation

A

mustard
argemone

84
Q

in parietal placentation, ovary in one-chambered but it becomes two-chambered due to

A

formation of false septum

85
Q

ovules are borne on central axis and septa are absent

A

free central

86
Q

examples of free central placentation

A

primrose
dianthus

87
Q

placenta develops at base of ovary and a single ovule is attached to it

A

basal placentation

88
Q

example of basal placentation

A

sunflower
marigold

Morphology Of Flowering Plants (8 decks)

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