NEET Biology Sexual Reproduction in Flowering Plant / फूलों के पौधों में यौन प्रजनन Question Bank Assertion and Reason

  • question_answer
    Read the assertion and reason carefully:
    Assertion            :     Angiosperms form endosperm after fertilization and is diploid.
    Reason              :     In gymnosperms, endosperm is formed before fertilization and is haploid.

    A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

    B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion 

    C) If the assertion is true but the reason is false

    D) If both the assertion and reason are false

    E) If the assertion is false but reason is true

    Correct Answer: E

    Solution :

    In angiosperm, the nucleus of the second male gamete fuses with the two haploid polar nuclei or diploid secondary nucleus of the central cell to form a triploid primary endosperm nucleus. In gymnosperms the female gametophyte differentiates before fertilization and is haploid. Therefore, endosperm which is also a part of female gametophyte remains haploid in gymnosperm.


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