Tuesday, March 13, 2012


1 One of the following is not a modified leaf

2 [A]: Flowers of Crotalaria are described as complete
[R]: Crotalaria flowers have bracts and bracteoles

Ans:Both A and R are true but R is not the correct explanation of A
3 [A]:Bisexual flowers are always complete
[R]: They have both androecium and gynoecium

Ans: A is false but R is true
4 Match the following
List – I                          List – II
A)Given plant has either male       I)Acalypha
  or female flowers
B)Given plant has male and      II)Polygonum
  female flowers only
C)Given plant has bisexual          III)Solanum
   and female flowers
D)Given plant has male,               IV)Tridax
  female and bisexual flowers

Ans:A-V, B-I, C-IV, D-II
5 With respect to distribution of sex in plants, Identify the feature that is common to Tridax, Mangifera, Borassus and Casuarina.

Ans:All have female flowers
6 In symmetry in form and structure of flower, Ocimum flowers show similarity with the flowers of

7 Match the following
Feature of flower                    Plant
A)Floral leaves of only                I)Poinsettia
  3rd node are absent
B)Floral leaves of either 1st       II)Ficus Gall flowers
  or 2nd node are absent
C)Floral leaves of 1st,                III)Solanum
  2nd and 4th nodes are absent
D)Floral leaves of either 1st or        IV)Amaranthus
  2nd and 3rd nodes are absent
                                 V)Tridax ray florets

Ans:A-V, B-IV, C-I, D-II
8 Study the following table and choose the correct combination
Flowers of the Plant   Character I    Character II
I)Hibiscus            Ebracteate     Bracteolate
II)Tephrosia            Bracteate     Ebracteolate
III)Datura            Ebracteolate     Ebracteate
IV)Allium            Bracteolate     Bracteate

Ans:I and III
9 [A]: Flowers of Datura are cyclic
[R]: Its stamens are arranged in a whorl

Ans:Both A and R are true but R is not the correct explanation of A
10 Carpels are arranged in spirals over the thalamus in the flowers of
I. Magnolia  II. Polyalthia III. Annona IV. Hibiscus

Ans:I, II, III
11 Choose the most advanced condition among the following

12 Sex distribution in Ruscus is described as

13 Arrange the flowers of the following plants with gradual increase in number of floral whorls
I. Datura II. Ficus III. Tridax ray florets  IV. Allium

Ans:II, III, I, IV
14 Arrange the following aestivations with gradual increase in the number of perianth lobes having one margin inside and one margin outside
i) Corolla of Hibiscus  ii) Calyx of Ipomoea
iii) Corolla of Fabaceae  iv) Corolla of Caesalpiniaceae

Ans: ii, iii, iv, i
15 Amaranthus flowers are

16 Study the following and identify the correct item groups
Plant     Floral character – I     Floral character – II
i)Annona        Hemicyclic            Polysepaly
ii)Hibiscus     Actinomorphic             Hypogyny
iii)Allium     Trimerous                    Homochlamydeous
iv)Datura      Actinomorphic              Twisted corolla 

Ans:i, ii, iii, iv
17 Ephemeral calyx is seen in

Ans: Argemone
18 Filaments of anther are attached at the back of the anther in
I. Oryza II. Hibiscus III. Nelumbo IV. Datura

Ans:I, III, II
19 Sepals and petals are spirally arranged on the thalamus of

20 Both complete and incomplete flowers are present in

21 Concave thalamus is seen in

22 [A] : Calyx of capsicum is acrescent.
[R] : Its calyx doesn’t fall off after fertilization.

Ans:A is false but R is true
23 Two short stamens and the remaining tall of an androecium are seen in the flowers of

Ans:Brassica, Ocimum
24 Some stamens of the following plant do not produce pollen or form functionless pollen

25 Total number of stamens of a flower is equal to the total number of thecae in

26 Match the following
List – I                  List – II
A)Monadelphy                  I)Tridax
B)Union of stamens throughout  II)Calotropis
  their length 
C)Staminal union with stigma III)Hibiscus
D)Union of stames with 2nd  IV)Crotalaria
  cycle of floral parts

Ans:A-IV, B-V, C-II, D-I
27 Match the following
Description of the carpels           Example
of ovary
A.Margins of the same carpel are           I) Helianthus
fused but no fusion with adjacent 
B.Margins of adjacent carpels are           II) Allium
fused but not the margins of same 
C.Margins of the same carpel and 
wings of adjacent carpels are fused  III) Dolichos 
D.Margins of the adjacent carpels are 
fused but ovules are not present at the 
fused margins but present at other place  IV) Brassica

Ans:A-III, B-IV, C-II, D-I
28 A plant with gynobasic style shows

Ans:Didynamous condition
29 Sterile pistils or pistillodes are seen in

30 Disappearance of septa of the ovary is noticed during the development of gynoecium of

31 Androecium of Hibiscus is best described as

Ans:Extrorse, Dorsifixed, Monothecous, Epipetalous, Transverse dehiscence
32 The two lobes of the anther are connected by connective in

33 Match the following
List – I                                 List – II
A)Stamens are fused with only 
perianth lobes of 1st cycle              I)Allium
B)Stamens are fused with 4th 
cycle floral parts                      II)Gossypium
C)Stamens are fused with 2nd 
cycle of floral parts                     III)Dolichos
D)Stamens are fused with both 
1st and 2nd cycle of floral parts             IV)Grevillea

Ans:A-V, B-IV, C-II, D-I
34 In one of the following plants the anther is not broken along the length of its thecae

35 These Placentations are clearly seen in Longitudinal section of the ovary
I. Marginal  II. Axile III. Basal IV. Laminar

Ans:I and III
36 Out of 5 perianth lobes of a cycle, only perianth lobe has one margin out side and one margin inside in one of the following aestivations

37 Ephemeral calyx is seen in a plant which has

Ans:Spinous leaf margin
38 Match the following
No. of stamens in a flower       Plant
A)1                                  I)Crotalaria
B)4                                 II)Brassica
C)5                                III)Ocimum
D)6                                IV)Datura

Ans:A-V, B-III, C-IV, D-II
39 Study the following table and choose the correct combination
Plant       Pistil of Flower      Androecium of Flower
I)Annona             Free carpels       Fused stamens
II)Hibiscus     Fused carpels Adnated androecium
III)Cucurbita    Fused carpels     Cohesion of stamens
IV)Nymphaea Only one carpel     Adnated anthers

Ans:II and III
40 [A]: All incomplete flowers are unisexual
[R]: All unisexual flowers are incomplete

Ans:A is false but R is true

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