apical plate

apical plate

[′ap·i·kəl ′plāt]
(invertebrate zoology)
A group of cells at the anterior end of certain trochophore larvae; believed to have nervous and sensory functions.
References in periodicals archive ?
Peridinium gatunense Nygaard is spherical with no dorsoventral compression, has wide cingular lists and a small first apical plate.
The apical intercalaryplates are described as asymmetrical (to contrast with the symmetrical apical plates of the Willei Group), there is a small, pentagonal la, larger 2a, and large 3a plate (Fig.