Photoreceptor cells (1 Viewer)

[Nearly Passing]

Im so stuck on this question for my assesment;

Present information about the nature & functioning og photoreceptor cells in mammals, insects & in 1 other animal.

I can't find even any basic information on this, please help if you have any information or good websites!

 

[currysauce]

Thy will be done:

http://hsc.csu.edu.au/biology/options/communication/2952/CommPart4.html#6