THECA

Theca

A theca refers to any case, covering, or sheath. In botany, the theca of an angiosperm consists of a pair of microsporangia that are adjacent to each other and share a common area of dehiscence called the stomium. Any part of a microsporophyll that bears microsporangia is called an anther. Most anthers are formed on the apex of a filament. An anther and its filament together form a typical stamen, part of the male floral organ.

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theca

Noun

  1. Any external case or sheath.
  2. The pollen producing organ usually found in pairs and forming an anther.
  3. The twin layers of cells surrounding the basal lamina of an ovarian follicle
  4. The membrane complex enveloping the cells of certain plankton including diatoms and dinoflagellates
  5. The calcareous wall of a corallite, the exoskeleton of a coral polyp


The above text is a snippet from Wiktionary: theca
and as such is available under the Creative Commons Attribution/Share-Alike License.

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