BIO 100 Quiz: ap08_biology_form_b_q1.pdf
Document Summary
2008 scoring guidelines (form b: measurements of dissolved oxygen (do) are used to determine primary productivity in bodies of water, explain the relationship of dissolved oxygen to primary productivity. Increase in oxygen = increase in primary productivity. Visit the college board on the web: www. collegeboard. com. The first point was earned for the correct equation for photosynthesis. A second point was earned by noting that primary productivity can be determined by measuring dissolved-oxygen content. The definitions of gross productivity and net productivity earned the third and fourth points. The second prediction that pond water placed in light would produce more oxygen than when exposed to darkness earned a seventh point. The student earned the eighth point for stating that the lower amount of dissolved oxygen in the dark pond could be due to cellular respiration, which would remove some of the available oxygen.
