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Flower
2.
Which character of gynoecium cannot be represented in floral formula [
A. Locule number
B. Placentation
C. Position of Gynoecium
D. Union among carpels
1. A & B
3. Only B
2. B & C
4. C & D
Free central placentation develops from
1) Unicarpellary condition
]
[
]
co
m
1.
2) Multicarpellary, syncarpous condition
3) Multicarpellary, apocarpous condition 4) Bicarpellary sub-apocarpous condition
Smallest flowers are found in
1) Rafflesia
4.
2) Colocasia
6.
2) Stigma side
2) Incomplete, bisexual
3) Incomplete, unisexual
4) Unisexual, monoecious
Bi-lipped corolla is present in
2) Ocimum
3) Datura
[
]
[
]
[
]
4) Cassia
hi
Among the flowers mustard, plum, guava, sunflower, rose, china rose, peach,
1. Three
ks
brinjal, Canna, Salvia how many are with half inferior ovaries
2. Eight
3. Four
True statements among the following
[
]
4. Six
[
.s
a
8.
]
4) Bract side
If one of the essential organs is missing that flower is called as
1) Tridax
7.
3) Axis side
1) Monoecious
[
4) Mustard
Anterior side of the flower is
1) Ovary side
5.
3) Wolfia
ed
uc
at
io
n.
3.
]
I : All complete flowers are bisexual.
w
II : All bisexual flowers are complete.
w
w
III : A chlamydeous flowers are incomplete.
1) I & II
9.
10.
2) II & III
3) I & III
4) Only I
Vexillary aestivation is observed in
1) Calyx of Hibiscus
2) Corolla of Pisum
3) Corolla of Ipomea
4) Calyx of Catharanthus
Petals are united in
1) Cassia
2) Datura
3) Canna
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[
]
[
]
4) Vexillary petals
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True statement regarding Asteraceae members
A. Some flowers are tubular
B. Basal placentation
C. Two bundles of stamens
D. Twisted aestivation
1. A & B
12.
2. B & C
A. Ovary wall fused with thalamus
B. Thalamus is cup shaped
C. Ovary wall not fused with thalamus
D. Thalamus is conical
2. B & C
3. C & D
Ascendingly imbricate aestivation is seen in
2) Datura
3) Pea
2. Mustard
[
]
4) mustard
3. Pea
[
]
4. China rose
True statement regarding stamens
[
]
2) Stamens are second whorl of flower
hi
1) Stamen is a modified leaf
3) Stamens are non-essential structures
4) Stamens can be persistent
A T.S of ovary of Primerose shows
ks
17.
]
4) Corolla of Fabaceae
Variation in the length of the stamens re found in
1. Citrus
16.
[
Second whorl appendages are attached to appendages of third whorl in flower of
1) Cassia
15.
]
2) Corolla of Caesalpiniaceae
3) Calyx of Caesalpiniaceae
14.
[
4. D & A
ed
uc
at
io
n.
1) Calyx of Fabaceae
]
4. D & A
In perigynous flower
1. A & B
13.
3. C & D
[
co
m
11.
[
]
[
]
.s
a
1) Many chambers
2) Single chamber with a single ovule
3) Ovules develop on the inner wall of the ovary
Perianth lobes are completely absent in
w
w
18.
w
4) Single chamber with many ovules on central axis
1. Croton
19.
20.
2. Flowers of cyathium
3. Canna
4. Allium
Basal placentation and marginal placentation is seen respectively in
[
1. Unilocular ovary, Unilocular ovary
2. Unilocular, Multilocular
3. Multilocular, Unilocular
4. Multilocular, Multilocular
Gynoecium united with cup shaped thalamus in
1) Datura
2) Tridax
3) Rosa
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[
]
]
4) Crotalaria
22.
Incorrect statement regarding mustard is
1. Carpels are not free
2. Ovary is superior
3. Flowers are epigynous
4. False septum
In descendingly imbricate aestivation
1) Anterior petal is outer most
3) Posterior petal covers the anterior petals.
24.
]
[
]
1) Union of floral parts
2) Modified pedicel
3) Perianth with modification
4) Modified branch with nodes and internodes
If the flower can be cut vertically into two equal parts only on one plane, that is
]
[
]
[
]
[
]
4) Asymmetric flower
Number of nodes in a Homochlamydeous and bisexual flower is
1)3
[
2) Actinomorphic flower
3) Perigynous flower
26.
[
4) Anterior petal covers the posterior petals
The thalamus in a flower is
1) Zygomorphic flower
25.
]
2) Posterior petal is innermost
ed
uc
at
io
n.
23.
[
co
m
21.
2)4
3) 2
4) 1
True statement among the following
1) Number of carpels are equal to number of locules always
hi
2) Number of locules always equal to carpel number.
3) Generally stigma number equal to carpels
Flowers in monocots are
.s
a
27.
ks
4) Number of stamens is equal to the number of petals.
1) Pentamerous
28.
w
2. 4
3. 6
w
w
2. Ocimum
2) Bean
[
]
[
]
[
]
4. 10
3. Canna
4. Hibiscus
Adhesion of stamens is seen in
1) Cassia
31.
4)Dimerous
Flower cannot be cut into two equal halves in any plane in
1. Dolichos
30.
3)Trimerous
Number of stamens in diadelphous condition is
1. 5
29.
2)Tetramerous
3) Gulmohar
In staminate flower
4) Datura
[
1. Stamens are absent
2. Gynoecium is absent
3. Perianth is absent
4. Only stamens are present
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]
One margin of corolla is covered by the next one in
1. Ipomea
35.
36.
2. Male flower
39.
3. On false septum
4. Wall of the ovary or on false septum
Calyx of Hibiscus is
1. Gamosepalous,valvate
2. Polysepalous,twisted
3.Gamosepalous,twisted
4.Polysepalous,valvate
Flowers are naked in
2. Euphorbia
2. Symmetry
]
[
]
[
]
4 .Polygonum
3 .Aestivation
2) Cucurbita
3) Brassica
[
]
4. Chlamydeous
Number of Locules is double the number of carpels in
[
]
4) Argemone
The number nodes in a pentamerous flower with 5 sepals, 10 petals,5 stamens and
2. 4
Match the following
3. 6
I. Hemicyclic flower
B) Annona
II. Unisexual flower
C) Canna
III. Inferior ovary
D) Cocos
IV. Spiral flower
w
w
w
.s
a
A) Cucurbita
]
[
]
[
]
List - B
ks
List - A
[
4.3
hi
1. 5
41.
3. Mangifera
Arrangement of perianth in bud condition is
10 carpels.
40.
[
2. Only on the septum
1) Dianthus
]
3. Pistillate flower 4. Monoecious
1. Wall of the ovary
1. Merosity
38.
[
In parietal placentation ovules are attached to
1.Croton
37.
4. Caesalpinia
In essential organs ,if only gynoecium is present that flower is
1. Naked flower
34.
3. Arachis
]
co
m
33.
2. Datura
[
ed
uc
at
io
n.
32.
V. Asymmetric flower
A
B
C
D
1)
III
IV
V
II
3)
III
I
V
II
A
B
C
D
2)
III
I
IV
II
4)
II
III
I
V
Corolla is tubular in
1. Ray florets of sunflower
2. Vexillary aestivation
3. Disc florets of Tridax
4. Datura
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42.
How many flowers given in the list here can be cut into two similar halves only in
43.
one vertical plane Pea, gulmohar, bean, Cassia, Ocimum
[
1. Four
4. Two
2. Five
3. Only one
Epipetalous condition is seen in
1. Lily
3. Pea
3. Cucumber
[
]
4. Gulmohar
Incorrect statement regarding thalamus is
[
1. It shows nodes and internodes
2. It grows continuously
3. It bears sex organs
4. It is a modified branch
ed
uc
at
io
n.
45.
2. Marigold
]
4. Lemon
Placenta develops at the base of the ovary in
1. Argemone
[
co
m
44.
2. Brinjal
]
]
Flower-Key
1
2
3
4
5
6
7
8
3
2
3
4
3
2
1
3
9
10 11 12 13 14 15 16 17 18 19 20
2
2
1
2
2
2
2
1
4
2
1
2
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
4
1
2
41 42 43 44 45
2
2
2
2
3
4
3
4
2
2
3
1
w
w
w
.s
a
3
3
hi
3
ks
3
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