noun, plural: hila
In botany, hilum pertains to the mark or scar seen on a plant seed or fungal spore from where it was attached to the stalk during development. The hilum on seeds is produced by the separation from its funicle or placenta. In spores, the hilum is formed by its detachment from the spore-bearing structure.
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... of pea seeds were soaked over night and when they reached appropriate size they were examined for visible parts. On the exterior the radicle, hilum, and micropyle were visible. When the testa was removed, and the cotyledons separated, the seed revealed the hypocotyl and two folded plumule ...
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