Self Quizzes and Interactive Flashcards:

http://bcs.whfreeman.com/raven7e/
from the web site accompanying Raven's "Biology of Plants" textbook.

Quizzes on Photosynthesis & P/I curve - recommended!:

http://www.marietta.edu/~spilatrs/biol103/photolab/index.html

Tests & notes from latest years (from the Science Students Union web site) :

http://givatram.org/bank/listfiles.php?course=72334