or go the traditional way

Login to your BIOSCIENCE. account and enjoy increased access to BIOSCIENCE. content, ideas and unlock downloads. A selection of top articles hand-picked by our editors available only to registered users.

Educational and corporate subscriptions give institutions and students unlimited access to the BIOSCIENCE. Archive, an essential tool for health-science and biology education and research.

Copyright © 2019 BIOSCIENCE PK, LLC. All rights reserved.

Medically reviewed and approved by a board-certified member


BS Media
By BS Media
Published: Monday, 17 April 2017
Updated: Monday, 17 April 2017 16:23

Login to get unlimited free access

Be the first to comment!
There are different types of cells presents in sponges. The gastral layer of sponge contains a special type of cells called as choanocyte cells. These are also called flagellated cells.
Each cell is big. It is oval in shape. It has a big nucleus. It shows contractile vacuole and food vacuole. From a basal granule a flagellum arises. At the base of the flagellum a protoplasmic collar is present. Hence it is also collar cell.
In Sycon, these cells are restricted to radial canals. They are called flagellated chambers. By the action of flagelia water current is brought in. The incurrent water brings in food particles and 02. These food particles are filtered by the collar of the choanocyte. These food particles may be digested by the choanocyte or may be given to the amoebocyte.
Was this page helpful?
(0 votes)
  • Posted by BS Media
End of the article