The Flower

Question 1

reproductive unit of angiosperms

Answer 1

flower

Question 2

four whorls

Answer 2

calyx
corolla
androecium
gynoecium

Question 3

stalk of flower is called

Answer 3

pedicel

Question 4

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

Answer 4

thalamus / receptacle

Question 5

accessory whorls

Answer 5

calyx
corolla

Question 6

reproductive whorls

Answer 6

androecium
gynoecium

Question 7

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

Answer 7

lilies
perianth

Question 8

when a flower has both androecium and gynoecium

Answer 8

bisexual

Question 9

when a flower has only androecium or gynoecium

Answer 9

unisexual

Question 10

two symmetries of flowers

Answer 10

radial
bilateral

Question 11

when a flower is radially symmetrical, it is called

Answer 11

actinomorphic

Question 12

when a flower is bilaterally symmetrical, it is called

Answer 12

zygomorphic

Question 13

examples of actinomorphic flowers

Answer 13

mustard
datura
chilli

Question 14

examples of zygomorphic flowers

Answer 14

pea
gulmohar
bean
cassia

Question 15

asymmetry is seen in which flower

Answer 15

canna

Question 16

types of flowers based on number of petals

Answer 16

trimerous
tetramerous
pentamerous

Question 17

what is a bract

Answer 17

reduced leaf at base of pedicel

Question 18

flowers with bracts

Answer 18

bracteate

Question 19

flowers without bracts

Answer 19

ebracteate

Question 20

position of gynoecium and other parts in hypogynous flower

Answer 20

gynoecium at highest position, other parts below it

Question 21

ovary is said to be _______ in hypogynous flowers

Answer 21

superior

Question 22

examples of hypogynous flowers

Answer 22

mustard
china rose
brinjal

Question 23

where is gynoecium situated in perigynous flowers
what about other parts

Answer 23

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

Question 24

ovary is said to be ____________ in perigynous flowers

Answer 24

half inferior

Question 25

examples of perigynous flowers

Answer 25

plum rose peach

Question 26

where are gynoecium and other parts in epigynous flower

Answer 26

ovary is enclosed inside the thalamus other parts rise above ovary

Question 27

ovary is said to be __________ in epigynous flowers

Answer 27

inferior

Question 28

examples of epigynous flowers

Answer 28

guava cucumber ray florets of sunflower

Question 29

outermost whorl

Answer 29

calyx

Question 30

members of calyx are called

Answer 30

sepals

Question 31

function of sepals

Answer 31

protect the flower in bud stage

Question 32

calyx is called ______________ if sepals are united

Answer 32

gamosepalous

Question 33

calyx is called __________ if sepals are free

Answer 33

polysepalous

Question 34

members of corolla

Answer 34

petals

Question 35

why are petals brightly coloured

Answer 35

to attract insects for pollination

Question 36

corolla is called ____________ if petals are united

Answer 36

gamopetalous

Question 37

corolla is called ___________ if sepals are free

Answer 37

polypetalous

Question 38

shapes of corolla

Answer 38

tubular bell-shaped funnel-shaped wheel-shaped

Question 39

what is aestivation

Answer 39

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

Question 40

four types of aestivation

Answer 40

valvate twisted imbricate vexillary

Question 41

aestivation when sepals / petals just touch each other without overlapping

Answer 41

valvate

Question 42

example of valvate aestivation

Answer 42

calotropis

Question 43

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

Answer 43

twisted

Question 44

examples of twisted aestivation

Answer 44

china rose lady's finger cotton

Question 45

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

Answer 45

imbricate

Question 46

examples of imbricate aestivation

Answer 46

gulmohar cassia

Question 47

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

Answer 47

standard wings keel

Question 48

examples of vexillary aestivation

Answer 48

pea bean

Question 49

vexillary aestivation is also known as

Answer 49

papilonaceous aestivation

Question 50

members of androecium

Answer 50

stamens

Question 51

each stamen consists of

Answer 51

anther filament / stalk

Question 52

how many lobes do each anther have

Answer 52

two

Question 53

each lobe of anther has how many chambers

Answer 53

two

Question 54

the two chambers in a lobe of anther is called

Answer 54

pollen sacs

Question 55

sterile stamen is called

Answer 55

staminode

Question 56

when stamens are attached to petals

Answer 56

epipetalous

Question 57

example of epipetalous stamen

Answer 57

brinjal

Question 58

when stamens are attached to perianth

Answer 58

epiphyllous

Question 59

free stamens are called

Answer 59

polyandrous

Question 60

stamens are united into one bunch or bundle

Answer 60

monoadelphous

Question 61

example of a monoadelphous flower

Answer 61

china rose

Question 62

stamens are in two bundles

Answer 62

diadelphous

Question 63

example of a diadelphous flower

Answer 63

pea

Question 64

stamens are in more than two bundles

Answer 64

polyadelphous

Question 65

example of a polyadelphous flower

Answer 65

citrus

Question 66

variation in length of filaments is seen in

Answer 66

salvia mustard

Question 67

members of gynoecium

Answer 67

carpels

Question 68

three parts of carpel

Answer 68

stigma style ovary

Question 69

receptive surface for pollen grains

Answer 69

stigma

Question 70

in ovary, ovules are attached to

Answer 70

placenta

Question 71

more than one carpels and they are free

Answer 71

apocarpous

Question 72

example of apocarpous flower

Answer 72

lotus rose

Question 73

when carpels are fused

Answer 73

syncarpous

Question 74

examples of syncarpous flower

Answer 74

mustard tomato

Question 75

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

Answer 75

ovules ovary

Question 76

placentation is

Answer 76

arrangement of ovules within ovary

Question 77

types of placentation

Answer 77

marginal axile parietal basal central free central

Question 78

placenta forms a ridge along ventral suture of ovary

Answer 78

marginal placentation

Question 79

example of marginal placentation

Answer 79

pea

Question 80

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

Answer 80

axile placentation

Question 81

example of an axile placentation

Answer 81

china rose tomato lemon

Question 82

ovules develop on inner wall of ovary or peripheral part

Answer 82

parietal placentation

Question 83

example of parietal placentation

Answer 83

mustard argemone

Question 84

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

Answer 84

formation of false septum

Question 85

ovules are borne on central axis and septa are absent

Answer 85

free central

Question 86

examples of free central placentation

Answer 86

primrose dianthus

Question 87

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

Answer 87

basal placentation

Question 88

example of basal placentation

Answer 88

sunflower marigold