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Sexual Reproduc...

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  • Question 1
    1 / -0

    Identify the wrong pair of statements.
    I) The number of stamens in 5 flowers of Allium is equal to those in 5 flowers of Solanum.
    II) The microsporangia of Hibiscus and Asparagus are having 80 pollen grains each. Then the ratio of the number of pollen grains produced from each stamen of these two plants is 1: 1.
    III) The ratio of the number of stamens in the flowers of Pisum and Datura is 2: 1.
    IV) The number of carpels in a flower of Smilax is equal to the number of carpels in a cyathium inflorescence.

  • Question 2
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    In Cycas, pollination takes place in

  • Question 3
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    Thirty seeds, each of Dolichus, Pisum, and maize are kept for germination in the soil. How many cotyledons are found above the soil and below the soil respectively when all the seeds germinate?

  • Question 4
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    Different plants adopt various methods of pollination, match the plant with correct method of pollination. 

      List I
    		 List II 
     A Pisum sativum I Chasmogamy and cleistogamy
     B Commelina II Self pollination
     C Water hyacinth III Cross pollination and self sterility
     D Abution IV Protogyny and entomophily
     E Solanum V Entomophily and anemophily

  • Question 5
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    The pollen grains can be stored in a viable condition for many years in the following conditions. 

  • Question 6
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    Polygonum type of embryo sac/ typical female gametophyte of angiosperms is?

  • Question 7
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    Albuminous seeds store their reserve food mainly in

  • Question 8
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    Which of the following characters is not required for autogamy?

  • Question 9
    1 / -0

    Pollination mechanism of Calotropis is?

  • Question 10
    1 / -0

    Which of the following flower shows the features of autogamy?

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