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Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants3 Marks
Question
Name the cell from which the endosperm develops in a coconut. Mention its ploidy. Explain the process of endosperm development in a coconut.
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Answer

Endosperm develops from the primary endosperm cell. It is triploid (3n) in nature.
The endosperm develops from primary endosperm nucleus (PEN). The PEN undergoes successive nuclear divisions to give rise to free nuclei. This stage is called free nuclear endosperm. Subsequently, cell wall is formed on the periphery and endosperm becomes cellular.

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