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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Dicot endospermic seed is

    Question: Dicot endospermic seed is

    Options:

    Castor
    Fenugreek
    Both (a) and (b)
    Bean

    ✅Explanation:
    -Dicot endospermic seeds are seeds of dicotyledonous plants (plants with two seed leaves) that retain a significant portion of their endosperm (nutritive tissue) even after the embryo has fully developed.
    -Both Castor and Fenugreek are examples of dicot plants that have endospermic seeds.

    🔑Key Points:
    -After fertilization, the ovary develops into fruit and the ovules develop into the seeds.

    ✏️A seed consists of:
    -Seed coat – It can be divided into the outer testa and inner tegmen.
    -Embryo – It consists of the radicle, plumule, embryonal axis and cotyledon(s).
    -Post fertilization, the endosperm develops along with the zygote.
    -The primary function of endosperm is providing nutrition to the developing embryo.
    -After the embryo matures, the endosperm may or may not be retained in mature seeds.

    ✏️Based on the above factor, seeds are divided into 2 groups:
    -Endospermous – The endosperm is present in the mature seeds. Example – Maize, coffee, castor.
    -Non-endospermous – The endosperm is not present in the mature seeds. Example – Pea, gram, beans.
    -Monocots are usually endospermous with only a few exceptions.
    -The endosperm in monocots is usually bulky and stores food.

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