CLASSIFICATION OF CHONDRILLA

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

CLASS :- DEMOSPONGIAE (Skeleton of spongin fibres or siliceous spicules which are not six-rayed.)

ORDER :- TETRACTINELLIDA (Spicules tetraxon.) 

GENUS :- Chondrilla

GEOGRAPHICAL DISTRIBUTION

  • Found in British waters and U.S.A.

HABIT AND HABITAT

  • Chondrilla is a marine tetractinellid demosponge.

CHONDRILLA

GENERAL CHARACTERSTICS OF CHONDRILLA

  • Entire sponge body looks like a rounded mass attached to substratum. 
  • Free surface contains few oscula, while rest of the body is perforated by several pores.
  • Body surface is smooth, but mesogloea is thick and stony due to spherasters. 
  • Canal system is of leuconoid type. 
  • Spheraster in thick cortex. 
  • Spherasters found in the cortex between the cones are well developed while other spicules are absent.
CHONDRILLA

IDENTIFICATION

  • The animal contains pores, oscula and spherasters in thick cortex and all above features hence it is Chondrilla.

CHONDRILLA
CHONDRILLA
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