Select Your Favourite
Category And Start Learning.

  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Type of apomixis in mango is……….

    Question: Type of apomixis in mango is……….

    Options:

    Non-recurrent
    Recurrent
    Vegetative
    Non-vegetative

    ✅Explanation: Mangoes exhibit a type of apomixis called vegetative apomixis, where the embryo develops directly from a somatic cell in the ovule without meiosis and fertilization. This results in the production of genetically identical offspring to the parent plant.

    📌 Other Options Explanations:
    -Non-recurrent apomixis: The embryo sac develops from a cell of the nucellus and is haploid.
    -Recurrent apomixis: The embryo sac develops from the megaspore mother cell but does not undergo meiosis.
    -Non-vegetative apomixis: Does not exist as a specific type of apomixis.

    🔑Key Points:
    -Apomixis: ''apo'' = without & ''mixis'' = mixing. It is a form of asexual reproduction that results in the formation of seeds without fertilization (i.e without the fusion of male and female gametes). It is seen in plants of species Asteraceae & grasses.
    -It is a form of asexual reproduction that mimics sexual reproduction.
    -There are two kinds of apomixis in flowering plants: Agamospery and vegetative propagation

    • Agamospermy is further divided into three types:
    -Adventive embryonic
    -Parthenogenesis
    -Apospory & Apogamy

    • Adventive embryonic:
    -Formation of embryo directly from the diploid sporophytic cells (nucellus or integuments) of ovule (other than zygote) is called adventive embryony
    -It is seen in Citrus 
    Parthenogenesis: Formation of embryo from unfertilized egg
    -Apospory & Apogamy: Formation of embryo from any other cell of embryosac (other than the egg) without fertilization

      0
      Your Cart
      Your cart is emptyReturn to Shop