Simple Ears??

[William Ryu]

Hello:

I was wondering if there are organisms with simple hearing systems which
are much less "evolved" than the mammalian ear.  I'm interested in a large
difference, analgous to the leap between the human eye and the light
sensing mechanism of simple flagellates and protozoa?

Do such beasts exist?  Does "audiotropism" occur?

-w

-- 
William Ryu
wsryu at husc.harvard.edu / Harvard University Biophysics / Paradise-Hell    
ryu at risvax.rowland.org / Rowland Institute for Science, Inc.