zoecium, zooecium
(Gr. zoon,
animal, + oikos, house). Cuticular sheath or
shell of Ectoprocta.
zoochlorella
(Gr. zoon, life, + Chlorella). Any of various minute green
algae (usually Chlorella) that live
symbiotically within the cytoplasm of some
protozoa and other invertebrates.
zooflagellates
Members of
the Zoomastigophora, the animal-like
flagellates (phylum Sarcomastigophora).
zooid
(Gr. zoon, life). An individual
member of a colony of animals, such as
colonial cnidarians and ectoprocts.
zooxanthella
(Gr. zoon,
animal, + xanthos, yellow). A minute
dinoflagellate alga living in the tissues of
many types of marine invertebrates.
zygote
(Gr. zygotos, yoked). The fertilized egg.
zygotic meiosis
Meiosis that takes place
within the first few divisions after zygote
formation; thus all stages in the life cycle
other than the zygote are haploid.
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