what is operculum in monocotyledon plant
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An operculum is an exine thickening that covers most of an aperture. Monocot opercula are usually associated with sulci, although they can occur in ulcerate apertures, as in Poaceae.
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the operculum, also known as a calyptra, is the cap-like covering or "lid" of the flower or fruit that detaches at maturity. ... In some species of monocotyledon, the operculum is an area of exine covering the pollen aperture. In Plantago, the capsule has an opening covered by an operculum.
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