PHERONEMA

CLASSIFICATION OF PHERONEMA

PHYLUM :- PORIFERA (Pore bearing, cellular grade, asymmetrical or radially symmetrical.)

CLASS :- HEXACTINELLIDA (Glass sponges with siliceous spicules of triaxon or six-pointed type.)

ORDER :- AMPHIDISCOPHORA (Hexaster spicules absent and amphidisks present.) 

GENUS :- Pheronema

GEOGRAPHICAL DISTRIBUTION

  • It is found in u.K., U.S.A., and Europe.

HABIT AND HABITAT

  • Pheronema is found on the bottom of sea. It is the commonest hexactinellid amphidiscophore adapted for deep-sea life

PHERONEMA

GENERAL CHARACTERSTICS OF PHERONEMA

  • Animal has a thick-walled cup or bowl-shaped body with the spongocoel opening above and with spicules in the form of tufts.
  • Pleural tufts and long-twisted root tufts are present resembling glass wool.
  • Projecting marginal and pleural prostals possess long monactines with small spines at one end, called as scepters.
  • Spongocoel opens through the osculum which is encircled by upright spicules or marginal prostals.
  • The animal in attached to the rocks by root spicules.
PHERONEMA

IDENTIFICATION

  • The animal contains spicular tufts such as marginal prostals and pleural prostals, hence it is Pheronema.
PHERONEMA
PHERONEMA, PORIFERA , PHYLUM PORIFERA
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