Meaning of plagiostomy | Babel Free

Definitions

An adaptation in which the mouth is diminished, firmly closed, and located on the ventral side protected deeply within a carapace.

Examples

“From its original subcerebral position (orthognathism) it shifts into a precerebral position (proguathism). That in connection with this rotation plagiostomy changes into teleostomy we will pass⟳ over in silence, although this phenomenon would give⟳ amble scope for interesting observations.”

“They are comparatively large, without outgrowths, of a rounded shape⟳, with a flattened ventral surface and cryptostomy or plagiostomy with a lip.”

“Two other morphological features, plagiostomy and cryptostomy, are considered to be adaptations to life in soil; both involve⟳ a reduction in the size of the pseudostome in proportion to the test⟳ and the formation of a vestibule (Fig. 11) and both tend⟳, therefore, to protect⟳ the cell against dessicaation (Bonnet, 1961a, 1964).”

CEFR level