Question

The rate of photosynthesis in pond water can be calculated

• A. By subtracting the level in the covered jar from the level in the original sample and adding that number to the level in the uncovered jar
• B. By adding the level in the covered jar to the level in the original sample and subtracting that number from the level in the uncovered jar
• C. By subtracting the level in the uncovered jar from the level in the original sample and adding that number to the level in the covered jar
• D. By adding the level in the uncovered jar to the level in the original sample and subtracting that number from the level in the covered jar
• E. By subtracting the level in the covered jar to the level in the uncovered jar and subtracting that number from the level in the original sample

Answer 1

The correct option is A By subtracting the level in the covered jar from the level in the original sample and adding that number to the level in the uncovered jar

The intensity of light is one of the main factors that affect the rate of photosynthesis. Other factors responsible for photosynthesis are carbon dioxide concentration, temperature and water. While the affect of light is direct for the light-dependent reaction it is indirect for the light-independent reaction. The common method used to measure the rate of oxygen evolution during photosynthesis is by noting the volume changes of the bubbles that evolve. Thus, the correct answer is option A.