The primitive or most basic form of self-pollination in plants where flowers remain completely closed and never bloom open.
From Greek 'archi-' (primitive), 'kleistos' (closed), and 'gamos' (reproduction). This botanical term distinguishes the most basic type of closed-flower fertilization from more complex variations.
Plants practicing archicleistogamy represent an extreme evolutionary strategy—they've essentially given up on attracting pollinators entirely, putting all their effort into pure self-reproduction.
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