What is the nucellus of a plant
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What Is the Function of Nucellus?
Nucellus makes the most of the ovule. It encloses the embryo sac. They have abundant food reserves and therefore act as nutritive tissues for the embryo in some plants. One of the cells of the nucellus differentiates and acts as a megaspore mother cell (MMC) in the micropylar region. In some seeds, nucellus is persistent and forms perisperm. E.g. black pepper and beet.
In citrus and mango, some of the nucellus cells develop into embryos as they start dividing and protrude into the embryo sac. This results in the formation of many embryos, the condition is known as polyembryony.
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