The fertilized egg-cell (oospore) forms a filamentous structure, the proernbryo, from a restricted basal portion of which one or more embryos develop, one only as a rule reaching maturity. [Please select]
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The end of a hair is generally pointed, sometimes filamentous. [Please select]
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_Tentacles_ Filamentous outgrowths (in _Hydra_ hollow) of the body-wall round the mouth. [Please select]
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The external gills are moderately long, slender, and filamentous; the yolk sac is still moderately large. [Please select]
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The external gills are long and filamentous, and the yolk sac is large. [Please select]
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