Tuesday, March 13, 2012

FERTILIZATION AND FRUIT ASSIGNMENT

1 Pollen tube entry into the ovule where the integuments and Nucellus meet at the posterior region was first discovered in a plant




Ans:that has Pendent inflorescence consisting of acropetally arranged sessile unisexual flowers
2 The pollen tube usually releases the male gametes into the following structures of Embryosac




Ans:Synergid
3 Plant in which pollen tube enters into the ovule through integuments or Funiculus has
I. Parietal placentation
II. Polysiphonous pollen grains
III. Campylotropous ovules





Ans:I and II
4 The growth of pollen tube towards the embryosac is best described as




Ans:Chemotropism
5 The total number of Nuclei involved in double fertilization of Lilium is




Ans:4
6 The following structures of flower are not completely shedded off after fertilization in the plants of Asteraceae
I. Corolla
II. Calyx
III. Gynoeciumv
IV. Bracteoles





Ans:II and III
7 The common feature between the endosperm of Gymnosperms and Angiowperms is




Ans:Nourish the embryo
8 Match the following
Character of the plant              Seed nature
A)Polyarch roots with multiple epidermis  I)Perispermic
B)Pentarch roots                        II)Endospermic
C)Stems with bicollateral vascular bundles  III)Arillate
D)Ovary with superficial placentation   IV)Single fertilization
                           V)Caruncle





Ans:A-IV, B-V, C-II, D-III
9 Study the following table and choose the correct combination
Plant                        Character I                Character II
I)Dolichos             Pollen prepotency      Exalbuminous seeds
II)Cocos                      Dicliny            Arillate seeds
III)Piper nigrum             Perispermic            Endospermic
IV)Podostemon             Double fertilization   Perispermic





Ans:I and III
10 [A]: Double fertilization was first discovered by Nawaschin
[R]: Nawaschin first observed the formation of diploid zygote due to Amphimixis





Ans:A is true but R is false
11 Soil water is not absorbed for seed germination in




Ans:Rhizophora
12 Arrange the following structures of Embryo of Maize seed in a sequence from one end other end with respect to their place or point of attachment on the Tigellum.
I. Coleoptyle
II. Plumule
III. Mesocotyl
IV. Coleorhiza
V. Radicle
IV. Scutellum





Ans:V, IV, VI, III, I, II
13 Study the following table and choose the correct combination





Ans:III and I
14 The third integument of the seed is formed from




Ans:Funiculus
15 Mace is morphologically




Ans:Integumentary outgrowth of Micropylar region
16 [A]: Seeds of Capsella are non-endospermic
[R]: It shows Syngamy and Triple fusion





Ans:Both A and R are true but R is not the correct explanation of A
17 Assertion : Mango has Drupe.
Reason : Endocarp of Mangifera fruit is hard and stony.





Ans:A and R are correct, R explains A
18 Most advanced fruit is present in




Ans:Ananas
19 Edible part of Hesperidium is developed from




Ans:Ovary
20 Identify the wrong pair




Ans:Coconut - Nut
21 Leathery epicarp is seen in
i) Citrus
ii) Mangifera
iii) Cocos





Ans:i, ii and iii
22 Usual time taken for the development of fruit is




Ans:few months
23 Berry is more common in




Ans:Solanaceae
24 These fleshy fruits are always developed from inferior ovaries
I. Pepo    II. Berry III. Pome IV. Drupe





Ans:I and III
25 One seeded condition is never seen in the following freshy fruits
I. Berry II. Pome III. Drupe IV. Hesperidium





Ans:II, IV
26 Pericarp has Lysigenous cavities in




Ans:Hesperidium
27 Ediblel part of this fruit varies from plant to plant




Ans:Drupe
28 Match the following
Plant                                   Main Edible part
A)Pyrus malus                  I)Mesocarp, endocarp
B)Citrus                            II)Mesocarp
C)Musa                             III)Outgrowths of endocarp
D)Mangifera                          IV)Pedicel
                            V)Torus





Ans:A-V, B-III, C-I, D-II
29 Study the following table and choose the correct combination
Fruit of the plant    No. of locules           No. of carpels
I)Capsicum                 1                       2
II)Cucumis                 3                       1
III)Citrus               Many                      many
IV)Pyrus                   One                      Many





Ans:I and III
30 These fruits are developed from monocarpellary ovaries




Ans:legume, lomentum
31 The following fruit always has persistant calyx




Ans:cypsela
32 An aggregate fruit is never developed from




Ans:Syncarpous gynoecium with fused ovaries
33 The fruits of the following plants are developed from inferior ovaries
I. Helianthus
II. Oryza
III. Ariistolochia





Ans:Only I
34 Single seeded mericarps are formed in
I. Abutilon
II. Sida
III. Acacia





Ans:II and III
35 Spadix develops into Sorosis in




Ans:Artocarpus
36 An achene is




Ans:Dry indehiscent fruit developed from monocarpellary ovary
37 Match the following
List – I                                  List – II
A)Etaerio of berries                        I)Nelumbo
B)Etaerio of follicles                        II)Acer
C)Etaerio of Drupes                        III)Artabotrys
D)Etaerio of Achenes                        IV)Magnolia
                                          V)Rubus





Ans:A-III, B-IV, C-V, D-I
38 Study the following table and choose the correct combination
Plant    Type of fruit                Ovary from which it is developed 
I)Cochicum  Septicidal capsule        Tricarpellary superior ovary
II)Abutilon Schizocarp                 Pentacarpellary superior ovary
III)Datura  Septifragal capsule        Bicarpellary bilocular inferior 
                                          ovary
IV)Anacardium Nut                 Multicarpellary superior ovary





Ans:I and IV
39 [A]: All Composite fruits are developed from inflorescences with sessile flowers
[R]: All inflorescences with sessile flowers form Compound fruits





Ans:A is true but R is false
40 Aggregate fruit looks like simple fruit in




Ans:Annona
41 For the formation of a fruit in Sida the minimum number of meiotic divisions required is 15. what is the number of carpels present in its gynoecium




Ans:12
42 The dehiscent fruit that is not broken along the dorsal sutures is




Ans:Aristolochia

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ASTHRA JUNIOR COLLEGE , VIJAYAWADA