Theca vs Epitheca - What's the difference?
theca | epitheca |
(biology) Any external case or sheath.
(botany) The pollen producing organ usually found in pairs and forming an anther.
(medicine) The twin layers of cells surrounding the basal lamina of an ovarian follicle
(microbiology, planktology) The membrane complex enveloping the cells of certain plankton including diatoms and dinoflagellates
(coral science) The calcareous wall of a corallite, the exoskeleton of a coral polyp
(microbiology, planktology) The upper half of the theca of a thecate protist such as a diatom or dinoflagellate.
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In microbiology|planktology|lang=en terms the difference between theca and epitheca
is that theca is (microbiology|planktology) the membrane complex enveloping the cells of certain plankton including diatoms and dinoflagellates while epitheca is (microbiology|planktology) the upper half of the theca of a thecate protist such as a diatom or dinoflagellate.As nouns the difference between theca and epitheca
is that theca is (biology) any external case or sheath while epitheca is (microbiology|planktology) the upper half of the theca of a thecate protist such as a diatom or dinoflagellate.theca
English
Noun
(en-noun)Derived terms
{{der3, thecal , thecate , thecoma , epitheca , ootheca , gnathotheca , hypotheca , spermatheca , theca externa , theca interna , theca folliculi}}External links
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* * * ----epitheca
English
Noun
(epithecae)- The frustule's structure is usually composed of two overlapping sections, known as valves. The upper valve is termed the epitheca and is slightly larger and overlaps the lower valve, the hypotheca.
ucl.ac.uk diatom webpage
- The diatom frustule is often likened to a pill-box ... with an epitheca (larger upper valve), and a hypotheca (smaller lower valve).