What's the difference between perigonium and sporosac?
Perigonium
Definition:
(n.) Same as Perigone.
Example Sentences:
Sporosac
Definition:
(n.) A hydrozoan reproductive zooid or gonophore which does not become medusoid in form or structure. See Illust. under Athecata.
(n.) An early or simple larval stage of trematode worms and some other invertebrates, which is capable or reproducing other germs by asexual generation; a nurse; a redia.