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Sexual Reproduc...

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  • Question 1
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    Which of the following is not a method of removing sexual incompatibility?

  • Question 2
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    Which of the following occupies central position in flower

  • Question 3
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    Which of the following statements is/are false?

    a. A bithecous anther will have two microsporangia and a monothecous anther will have four microsporangia.  
    b. Androecium and gynoecium are the fertile appendages of a flower and are directly associated with sexual reproduction.
    c. After fertilisation, ovary develops into fruit and ovules into seeds.

  • Question 4
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    Which type of flower have ovary superior?

  • Question 5
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    The flower which do not open at all are called

  • Question 6
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    Filament is the long and slender stalk. Its proximal end is attached to the

  • Question 7
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    A flower is a modified shoot. Which of the following parts of a flower is made-up of one to many stamens?

  • Question 8
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    An embryo develops from diploid cell of nucellus or integument in

  • Question 9
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    Which of the following statements is/are false?

    a. The fusion of two male gametes with two different cells of different female gametophyte is called double fertilisation.
    b. Fertilisation is porogamous if the pollen tube enter the ovule through chalaza or integuments.
    c. Entry of pollen tube into style is facilitated by secretion of pectinases and hydrolytic enzymes.

  • Question 10
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    Match the following:

    a. Apogamy 1. It is the formation of an embryo sac directly from a nucellus cell or diploid megaspore mother cell. 
    b. Apospory 2. It is the formation of gametophyte directly from a sporophyte without the formation of spores. 
    c. Recurrent agamospermy 3. It is the formation of sporophyte directly from a gametophyte without the formation of gametes.

  • Question 11
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    Which of the following represents the basal part of the ovule and is opposite to the micropylar end?

  • Question 12
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    The given image shows the lateral cross-section of a flower. Which parts indicate the stigma and anther, respectively?

  • Question 13
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    In which of the following, the first mitotic division of primary endospermic cell is accompanied by cytokinesis and further nuclear divisions are not accompanied by cytokinesis?

  • Question 14
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    In haploid parthenogenesis, a normal haploid egg develops into a haploid embryo. Haploid parthenogenesis occurs in which of the following plants?

    a. Banana
    b. Cucumber
    c. Solanum
    d. Oenothera

  • Question 15
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    Insect pollinated flowers are

  • Question 16
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    Which of the following wall layers help(s) in dehiscence of anther and perform(s) the function of protection?

    a. Epidermis
    b. Tapetum
    c. Endothecium
    d. Middle layer                                       

  • Question 17
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    During Hybridisation process anther of bisexual flower is removed before it dehisces is called

  • Question 18
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    Match the following:

    a. Unitegmic ovules 1. They are the ovules with two integuments. Example: Monocots
    b. Bitegmic ovules 2. They are the ovules without integument. Example: Santalum
    c. Tritegmic ovules 3. They are the ovules with one integument. Example: Higher dicots
    d. Ategmic ovules 4. They are the ovules with three integuments (rarely ovule). Example: Asphodelus

  • Question 19
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    Which of the following flowers is a bisexual, homogamous and pollination takes place in it prior to its opening?

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