Obelia sentence example

obelia
  • 15),the polyps produce buds right and left alternately, so that the hydranths are arranged in a zigzag fashion, forming a " scorpioid cyme," as in Obelia and Sertularia.
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  • An important variation is seen, in the form of the hydrotheca itself, which may come off from the main stem by a stalk, as in Obelia, or may be sessile, without a stalk, as in Sertularia.
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  • Stage 1, seen in Obelia.
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  • Two of the commonest British hydroids belong to this family, Obelia and Clytia.
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  • Obelia forms numerous polyserial stems of the characteristic zigzag pattern growing up from a creeping basal stolon, and buds the medusa of the same name.
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  • The tentacles are usually hollow, rarely solid (Obelia) .
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