Question

which of the following graphs correctly shows chloroplasts role in photosynthesis?
a. rate of photosynthesis
light intensity
b. rate of photosynthesis
light intensity
c. rate of photosynthesis
light intensity
d. rate of photosynthesis
light intensity

Explanation:

Chloroplasts contain chlorophyll which uses light - energy for photosynthesis. Initially, as light intensity increases, the rate of photosynthesis increases. But there are other limiting factors like carbon - dioxide concentration and temperature. So, the rate of photosynthesis does not increase indefinitely and levels off at high light intensities.

Answer:

D. Rate of Photosynthesis increases with Light Intensity initially and then may level off, which is shown in option D where there is a positive linear relationship at first.