Question

Life Processes Quick Check 3 of 53 of 5 Items Question Scientists are looking to determine the primary productivity of a lake by analyzing its oxygen net primary productivity. How are scientists able to measure how much oxygen is used during a plant’s cellular respiration processes?(1 point) Responses by observing cellular respiration under bright light conditions by observing cellular respiration under bright light conditions by observing cellular respiration only when photosynthesis occurs by observing cellular respiration only when photosynthesis occurs by observing cellular respiration by studying biomagnification by observing cellular respiration by studying biomagnification by observing cellular respiration under the absence of light by observing cellular respiration under the absence of light Skip to navigation page 11 of 11

Answer 1

To measure how much oxygen is used during a plant's cellular respiration processes, scientists would typically do this **by observing cellular respiration under the absence of light**. In the absence of light, photosynthesis does not occur, so any change in oxygen levels can be attributed to cellular respiration alone.