If ovum is fertilized, the corpus luteum present in human female produces large amount of progesterone which helps in maintenance of endometrium.
If ovum is not fertilized, the corpus luteum presents in the human female degenerates thereby disintegration of endometrium takes place leading to menstruation.
The coconut water is the part of the endosperm. It develops from primary endosperm nucleus as post-fertilisation structure.
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