Monday, September 29, 2014

Sexual Reproduction in flowering plants

Sexual Reproduction in flowering plants

1.       Match the following.
          List-I                       List-II
          A)  Floriculture      I)  Pollen Fossilization
          B)  Embryology      II) The growing of ornamental flower bearing plants
          C)  Pollen robbery III) Preservation of viable pollen
          D)  Pollen Bank      IV) The study of events of fertilization
                                           V)  Consumption of pollen of flowers by insects without helping in pollination
          The correct match is
                A              B                C                D                        A              B                 C                D
          1)                    II               IV               V                   I                    2)  II            IV               V            III
          3)                    II               III               IV                 V                   4)  II            I                  IV           III
2.       The processes of microsporogenesis, megasporogenesis and embryogenesis occur respectively in
          1)  Anther, ovule, stigma                                           2)  Anther, style, ovule
          3)  Ovule, ovary, embryosac                                      4)  Anther, ovule, embryosac
3.       The wrong match regarding the morphology of following structures is
          1)  Stamen – Microsporophyll                                   2)  Carpel – Megasporophyll
          3)  Nucellus – Microsporangium                               4)  Flower – Modified shoot
4.       Choose the correct statement from following.
          1)  The pollensacs are transversely arranged in the anther
          2)  Tapetum is the female sporophytic nutritive tissue
          3)  Pollengrains are meiospores while pollen mother cells are meiocytes
          4)  The radial walls of endothecium have thickenings for hygroscopic activity
5.       The ratio between the number of male gametes produced by a male gametophyte and female gametes by a female gametophyte is
          1)  2 : 1                             2)  1 : 2                             3)  1 : 1                             4)  3 : 7
6.       The vegetative cell and generative cell of male gametophyte of angiosperms differ in their
          A)  Cell size                      B)  Cell shape                  C)  Shape of nucleus      D)  Size of nucleus
          1)  A, B only                     2)  C, D only                    3)  A, B, C only                4)  A, B, C, D
7.       Match the following.
          List-I                                                                         List-II
          A)  Pollengrain                                                         I)  Mother cell of male gametes
          B)  Megaspore                                                          II) Mother cell of male gametophyte
          C)  Central cell of embryosac                                 III) Sister cell of male gamete
          D)  Generative cell                                                   IV) Mother cell of female gametophyte
                                                                                             V)  Mother cell of endosperm
          The correct match is
                A              B                C                D                        A              B                 C                D
          1)  II               IV              V                I                    2)  II             IV               V                III
          3)  II               III              IV               V                   4)  II             I                  IV               III
8.       The pentacarpellary, syncarpous gynoecium with free stigmas and multicarpellary syncarpous gynoecium without style are respectively found in
          1)  Hibiscus and Annona  2)  Papaver and Michelia 3)  Hibiscus and Papaver  4)  Annona and Michelia
9.       Assertion (A) : The ovule is called megasporangium.
          Reason    (R) : The ovule contains nucellus, in which a megaspore mother cell is differentiated from the chalagal side.
          1)  A and R are true and R is the correct explanation of A.
          2)  A and R are true and R is not the correct explanation of A.
          3)  A is true, R is false.                                              4)  A is false, R is true.

10.     Wrong match of the following is
          1)  Loranthus – Anatropous ovule with single integument
          2)  Dolichos – Compylotropous ovule with two integuments
          3)  Polygonum – Ovule with micropyle, chalaza and funiculus on the same vertical line
          4)  Helianthus – Ovule with 1800 of curvature and single integument
11.     The typical embryosac of angiosperm is
          I)  Monosporic with genetically dissimilar 8 haploid nuclei
          II) Monosporic haploid, with six monokaryotic cells and one dikaryotic cell
          III) Monosporic with egg apparatus of 3 cells, antipodals of 3 cells and one central cell
          IV) Monosporic, develops from a single megaspore with 7 free nuclear divisions
          1)  All are correct except I                                         2)  All are correct except II
          3)  All are correct except III                                      4)  All are correct except IV
12.     The functional megaspore becomes embryosac in angiosperms due to cellularization after free-nuclear divisions with arrangement of cells as
          1)  Central cell in between chalazal egg apparatus and micropylar antipodals
          2)  Central cell in between micropylar egg apparatus and chalazal antipodals
          3)  Egg apparatus and central cell of chalazal side and antipodals of micropylar side
          4)  Egg apparatus of micropylar side and peripheral antipodals and central cell
13.     The growth of pollen tube is directed into the embryosac through synergid by
          1)  Antipodals                                                            2)  Polar nuclei
          3)  Filiform apparatus of egg cell                              4)  Filiform apparatus of synergid
14.     The total number of genomes in all the cells of angiospermic typical embryosac together is
          1)  7                                  2)  3                                  3)  5                                  4)  8
15.      Assertion (A) : Pollination is compulsory for fertilization in spermatophytic plants.
           Reason    (R) : The type of fertilization in all spermatophytes is double fertilization
         1)  A and R are true and R is the correct explanation of A.
         2)  A and R are true and R is not the correct explanation of A.
         3)  A is true, R is false.                                          4)  A is false, R is true.
16.      Arrange the following in correct ascending order based on their number
           I) Types of pollination in angiosperms            II) Types of flowers in commelina
           III) Types of cells in typical embryosac of angiosperms
           IV)  The embryosacs formed in a ovule
           1) IV, II, I, III             2) IV, I, II, III               3) III, I, II, IV                     4) IV, III, I, II
17.      Which of the following is not a character of anemorphilous flowers.
           1) Non sticky light pollengrains                          2) Feathery stigma              
           3) Ovary with single ovule                                  4) Unexposed stamens
18.      Match the following
           List – I                         List – II
           A) Maize                      I) Hypohydrophilous fresh water plant
           B) Yucca                     II) Long silky styles
           C) Commelina            III) Marine plant with long pollen grains
           D) Zostera                   IV) Mutual association with pollinator
                                                V) Both chasmogameous and cleistogamous flowers
           The correct match is
                     A              B               C               D                                  A               B              C              D
           1)      II              IV             V               I                      2)           II               IV             V              III
           3)      II              III             IV             V                     4)           II               I                IV             III
19.      Pickout the correct statement from following
           1) Diclinous flowers may be autogamous (or) allogamous
           2) Majority of hydrophytes have entomophilous flowers
           3) Chasmogamous flowers are always allogamous
           4) Cleistogamous flowers may be autogamous (or) Geitonogamous
20.      Wrong match with reference to type of pollination and type of agent
           1) Therophily – squirrels                                     2) Ophiophily – snakes
           3) chiropterophily – snails                                   4) Ornithophily – Birds
21.      Arrange the following steps of artificial hybridization in correct sequence of their performance from beginning
           A) Emasculation         B) Selection of parents                                              C) Bagging    
           D) Transfer of desired pollen                                                                        E) Rebagging
           1) B, A, C, D, E           2) B, A, E, C, D             3) E, D, C, A, B                   4) B, A, D, C, E
22.      Due to bursting of pollen tube after entering the embryosac, the male gametes are first released into the
           1) Central cell                                                      2) Egg cell                           
           3) Cytoplasm of synergid                                   4) Space between egg cell and synergid
23.      When tetraploid (4x) female plant is crossed with hexaploid (6x) male plant, with basic set number of chromosomes is 9, then the number of nuclei, the number of genomes and the number of chromosomes respectively participate in double fertilization respectively are
           1) 5, 12, 108                 2) 5, 13, 117                   3) 12, 12, 108                       4) 5, 5, 45
24.      Assertion (A) : The second nuclear fusion of double fertilization is called triple fusion
           Reason     (R) : The second fertilization of double fertilization involves the fusion the two male gametic nuclei and one female gametic nucleus
         1)  A and R are true and R is the correct explanation of A.
         2)  A and R are true and R is not the correct explanation of A.
         3)  A is true, R is false.                                          4)  A is false, R is true.
25.      Which of the following plant contains both nuclear endosperm and cellular endosperm.
           1) Bean                         2) Castor                        3) Coconut                           4) Wheat
26.      Find the ratio between the following structures with endosperm and without endosperm.
           A) Castor seed            B) Ground nut seed     C) Coconut fruit
           D) Bean seed               E) Maize seed                F)Pea seed
           1) 1 : 1                          2) 5 : 1                            3) 1 : 2                                  4) 2 : 1
27.      The structures of monocot embryo that are not found in dicot embryo are
           A) Coleoptile               B) coleorhiza                 C) endosperm                     D) Perisperm
           1) A, B                         2) C, D                           3) A, B, C                            4) A, B, C, D
28.    Ploidy of food storing tissue in the seeds of Ricinus and Pea respectively
          1) 2 n & 2n                   2) 2 n & 3n                3) 3n & 2n                 4) 3n &3n
29.    What is the correct arrangement of different stages of embryo?
          A. Globular                 B. Proembryo          C. Heart shaped      D. Mature embryo
          1) ABCD                      2) BCAD                    3) BACD                    4) DBAC
30.    Epiblast refers to a flap like outgrowth  of
          1) Epicotyle                 2) Hypocotyle           3) Coleoptile             4) Coleorhiza
31.      Given figure represents longitudinal section of a monocotyledonous embryo .
            Identify the parts labeled as A , B , C and D from the (i – vii) and select the
             i) Scutellum             ii) Coleoptile              iii) Shoot apex           iv)  Plumule
             v) Radicle                vi) Root cap               vii) Coleorhiza
             A   B   C   D                   A   B   C   D                A   B   C   D                 A   B   C   D
          1) i  vi   vii   ii             2) ii   vii   v   iii           3) ii   vii  iv    i            4)  iii  vii  vi  i
32.    Endosperm of which fruit is the main food of human beings?
          1) Caryopsis                2) Berry                     3) Cypsela                 4) Pome

33.    Diploid nutritive tissue in the seeds of black pepper and beet root is
          1) Endosperm              2) Perisperm              3) Male gametophytic tissue          4) Embryo
34.    Find the incorrect statement
          1) Size of orchid seed is 85 micrometers
          2) Weight of orchid seed is 0.81 micrograms
          3) Length of Seed of Lodecia is 30 cm       
          4) Circumference of seed of Lodoecia is 18 cm
35.    Which of the following is not related to seeds of  angiosperms
          1) the nourishment of young seedlings            2) help in dispersal to far off places
          3) Generate new genetic recombinations
          4) Dormancy and hydration are crucial for storage of seeds
36.    Find a disadvantage of hybrid seeds
          1) More yield                                                              2) More genetic recombinations
          3) More vigour and growth                                       4) Have to be produced every year
37.    Seed of which plant with long viability was discovered in archeological excavation at king Herod’s palace near the Dead Sea?
          1) Phoenix dactylifera                                                           2) Ficus elastica
          3) Lupinus arcticus                                                    4) Citrus sinensis
38.    Find the true match
            Column – I    (Event)                                  Column – II (Formation of )
          I. Apomixis                                                     A. asexual embryos from nucellus
          II. Parthenogenesis                                       B. fruit from ovary without fertilisation
          III. Parthenocarpy                                        C. embryo from egg cell without fertilization
          IV. Polyembryony                                         D. Seeds from ovule without fertilization
                        I          II         III       IV                   I          II         III       IV
          1)           D        C         B         A         2)        C         D         A         B
          3)           A         B         C         D         4)        D         C         A         B
39.    Apomictic seeds are found in
          1) All flowering plants                                               2) Allium and Cycas                       
          3) All species of Asteraceae and Grasses               4) Some species of Asteraceae and Grasses
40.     Select the correct statements from the following
I) Seeds of orange contain many embryos of different sizes and shapes
II) Apomixis is a form of asexual reproduction that mimics sexual reproduction
III) Double coconut is a worlds largest plant that gives rise to largest seeds
IV) Dehydration and dormancy of mature seeds are crucial for storage of seeds for future use

1)II&III                            2)I II & IV                        3)II & IV                            4)I & IV

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