Tuesday, March 13, 2012

FLOWER MCQ ASSIGNMENT

1 One of the following is not a modified leaf




Ans:Bracteole
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
                                V)Vallisneria 





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




Ans:Fabaceae
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




Ans:Dioecious
12 Sex distribution in Ruscus is described as




Ans:Monoecious
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




Ans:Monochlamydeous
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




Ans:Magnolia
20 Both complete and incomplete flowers are present in




Ans:Polygonum
21 Concave thalamus is seen in




Ans:Tephrosia
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




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




Ans:Hibiscus
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
                            V)Cucurbita





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 
carpels 
B.Margins of adjacent carpels are           II) Allium
fused but not the margins of same 
carpel
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




Ans:Ficus
30 Disappearance of septa of the ovary is noticed during the development of gynoecium of




Ans:Solanum
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




Ans:Sida
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




Ans:Solanum
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




Ans:Quincuncial
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
                      V)Euphorbia





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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ASTHRA JUNIOR COLLEGE , VIJAYAWADA