Question

F. F. Blackman performed experiments to investigate the effects of various factors on photosynthesis. In one of his experiments, Blackman found that if light intensity was low that photosynthesis could be accelerated by increasing the amount of light, but not by increasing the temperature or carbon dioxide concentration. What can you conclude from this specific experiment?

A. Light is important for photosynthesis
B. Carbon dioxide is important for photosynthesis
C. High temperatures are important for photosynthesis
D. Photosynthesis generates oxygen

Answer 1

The conclusion from F.F. Blackman's experiment is that light intensity is a limiting factor for photosynthesis at low light levels, as increasing light (but not temperature or CO2) accelerated photosynthesis.

Step-by-step explanation:

From F.F. Blackman's experiment, we can conclude that if an increase in light intensity leads to accelerated photosynthesis at low light levels, but increases in temperature or carbon dioxide concentration do not, then light is a limiting factor for photosynthesis under those conditions. The specific experiment indicates that light intensity directly affects the rate of photosynthesis when it is the limiting factor. It suggests that, at low light intensities, photosynthesis is limited primarily by light and not temperature or carbon dioxide, which are also important factors in photosynthesis under different conditions.