- Vertical Section through there is least modification by concrescence of the primary an Anodonta, about the mid-region filamentous elements of the of the Foot.
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.
C, Base of the multicellular filamentous Green Alga Chaetomorpha aes-ea.
D, Part of branched filamentous thallus of the multicellular Green Alga Oedocladium.
Submerged leaves are usually filamentous or narrowly ribbonshaped, thus exposing a large amount of surface to the water, some of the dissolved gases of which they must absorb, and into which they must also excrete certain gases.