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