Hello, my friend and I recently took a test and noticed that we both answered a question differently and got it correct.  Since the test which was about a week ago, my teacher has been absent do to a medical emergency (so we've been told), I was wondering if you could help with us soliving which is indeed to correct question, as we both want the best education possible.

All of the following are protozoans except for:
a. dinoflagellates b. amoeba c. paramecium d. trypanosomes e. plasmodium

Now I put e. and my friend put b.

Which is correct?

see
http://en.wikipedia.org/wiki/Protozoa

neither of you are correct!