A Virtual Pond Dip

Note: If visiting this page directly, it is designed to be used with the virtual dip in the jar of pond water.


Stentor (single-celled)


stentor.gif (3471 bytes)




Further details:
Stentor - an introduction

Name (genus): Stentor

Size : Up to 2 - 3 mm long

Where to find them : Attached to plants/algae and planktonic.

Notes : One of the largest freshwater protozoans and larger than some multi-celled pond animals.

When it is attached to a surface, it adopts the trumpet shape shown and the ring of cilia around the trumpet rim draw in water, together with the smaller organisms on which the Stentor feed. When the Stentor swims it adopts an oval shape.

The Stentor is often green in colour because of the algae (single-celled plants) associated with it. Like other large single celled creatures (e.g. amoebas) they have many nuclei. In Stentor you can see the nuclei as a 'string of pearls'. The large sphere is a water expelling vesicle. The cell is covered with tiny hair-like 'cilia'.

Classification :
Kingdom Protoctista, Phylum Ciliophora

Return to the Pond Dip

If you follow a link to an article, use the 'Go Back' feature twice on your web browser to return to the jar.



Microscopy UK Front Page
Micscape Magazine
Article Library

© Microscopy UK or their contributors.

Published in Micscape Magazine February 2001.

Please report any Web problems or offer general comments to the Micscape Editor,
via the contact on current Micscape Index.

Micscape is the on:line monthly magazine of the Microscopy UK web
site at http//www.microscopy-uk.net

All images © Wim van Egmond

© Onview.net Ltd, Microscopy-UK, and all contributors 1995 onwards. All rights reserved. Main site is at www.microscopy-uk.org.uk with full mirror at www.microscopy-uk.net.