Homework Help: dog behavior repost

Posted by -Anne on Wednesday, June 18, 2008 at 7:38am.

please check my answer again thanks

Pupillary constiction in the presence of bright light is an example of what reponse ?

A active tropic
B passive tropic
C unconditioned
D conditioned

I now say it's C

dog behavior repost - Writeacher, Wednesday, June 18, 2008 at 8:54am
Yes.

"In humans and many animals (but few fish), the size of the pupil is controlled by involuntary constriction and dilation of the iris in order to regulate the intensity of light entering the eye."
http://en.wikipedia.org/wiki/Pupil

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