Question

in the investigation of oxygen dynamics in e. chlorotica cultures, gross photosynthesis is reported after seven months in culture, even in the apparent absence of oxygen production. which statement provides the best reasoning to explain this observation? (1 point) the oxygen produced in photosynthesis is used in cellular respiration. photosynthesis can be sustained in the absence of oxygen production. the plastids store oxygen for use in photosynthesis. the ability to carry out photosynthesis is transferred from the chloroplast to the mitochondria.

Explanation:

In photosynthesis, oxygen is a by - product. If there is gross photosynthesis but no apparent oxygen production, it is likely that the oxygen produced is immediately consumed in cellular respiration. Photosynthesis itself requires light, carbon dioxide and water, and oxygen production is a common but not an absolute requirement for the process to occur in the short - term. Storing oxygen in plastids for photosynthesis is not a common mechanism, and the transfer of photosynthesis ability from chloroplast to mitochondria is not a valid explanation for this observation.

Answer:

The oxygen produced in photosynthesis is used in cellular respiration.