Nectosome sentence example

nectosome
  • The cormus is always differentiated into two parts; an upper portion termed the nectosome, in which the appendages are locomotor or hydrostatic in function, that is to say, serve for swimming or floating; and a lower portion termed the siphosome, bearing appendages which are nutritive, reproductive or simply protective in function.
    0
    0
  • In the nectosome one or more of the following types of appendage occur: I.
    0
    0
  • If sterile they remain attached and locomotor in function, forming the nectosome, the pneumatophore and swimming-bells.
    0
    0
  • In such cases the oldest cormidia, that is to say, those furthest from the nectosome, may become detached (like the segments or proglottides of a tape-worm) and swim off, each such detached cormidium then becoming a small free cormus which, in many cases, has been given an independent generic name.
    0
    0