A, Schematic longitudinal section through a zooid and bud of Stylophora digitata.
From this bud is developed the first zooid and first serial theca of the colony.
Mr. Busk, however, does not know of any gradations now existing between a zooid and an avicularium.
The asexual stock, after budding off one asexual zooid, elongates again and buds off a second zooid.
zooid zo·oid (zō'oid')
n.
An organic cell or organized body that has independent movement within a living organism, especially a motile gamete such as a spermatozoon.
An independent animallike organism produced asexually, as by budding or fission.
One of the distinct individuals forming a colonial animal such as a coral.
