Nutritive tissue in some seeds that develops from the nucellus of the ovule, serving as a food storage organ for the embryo. Unlike endosperm, perisperm is maternal tissue that persists from the original ovule structure.
From Greek 'peri' meaning 'around' and 'sperma' meaning 'seed,' literally 'around the seed.' The term was established in botanical literature as scientists distinguished between different types of nutritive tissues in seeds and their developmental origins.
Perisperm is like a plant's ancestral inheritance! While endosperm is 'new' tissue formed after fertilization, perisperm is ancient maternal tissue that the mother plant preserves to nourish her offspring - it's literally passing down her own body to feed the next generation.
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