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primary endosperm nucleus

noun
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Definition of primary endosperm nucleus

: the nucleus formed by the fusion of two polar nuclei in the embryo sac of a seed plant prior to fertilization

— called also secondary nucleus

— compare endosperm nucleus

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“Primary endosperm nucleus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/primary%20endosperm%20nucleus. Accessed 25 May. 2022.

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