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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Which of the following plants produce endosperm following fertilization?

    Question: Which of the following plants produce endosperm following fertilization?

    Options:

    Wheat
    Canola
    Pine
    Both a & b

    ✅ Explanation:
    -Endosperm is a tissue produced inside the seeds of most flowering plants around the time of fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein.  
    -Gymnosperms, like pine, do not produce endosperm. Their seeds have a haploid nutritive tissue derived from the female gametophyte.
    -Wheat and Canola are angiosperms, but their endosperm is absorbed during seed development.

    🔑Key Points:
    -The endosperm develops before the embryo to provide nutrition to the developing embryo.
    -The embryo starts developing at the micropylar end of the embryo sac, where the egg cell was positioned.
    -Most zygotes start dividing after partial development of endosperm, in order to assure nutrition to the embryo.
    -The process of embryo development is known as embryogeny.
    -The early stages of embryogeny are similar in dicots and monocots.
    -In a dicot plant, the zygote first gives rise to the proembryo.
    -The proembryo then subsequently forms the globular embryo, which is round in shape.
    -Then the heart-shaped embryo is formed and the rest of the embryo sac starts degenerating.
    -Lastly the mature embryo is formed.

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