a. Yes, but only initially.

b. Yes, the rate increases over the entire range of intensities available in this lab.

c. No, within the range of intensities available to test, the rate did not increase.

d. No, the rate of photosynthesis decreases with increasing light intensity.

2. If the rate stops increasing, what light intensity does it stop increasing at?

a. 0-800 ft-candles

b. 800-1600 ft-candles

c. 1600-2400 ft-candles

3. What rate comes closest to the maximum rate of carbon dioxide fixation you have measured in this activity? Remember that you took your sample after 30 seconds; you can assume that rate would remain constant over time to calculate µl/min (microliters/60 seconds).

a. 16 microliters/min

b. 66 microliters/min

c. 33 microliters/min

d. 130 microliters/min