Question

How and when is oxygen produced as a waste product in plants?

• A. By respiration during the night
• B. By respiration during the day
• C. By photosynthesis during the day
• D. By photosynthesis during the night

Answer 1

Answer:

C. By photosynthesis during the day

• Oxygen is produced as a waste product during photosynthesis, which occurs in the presence of sunlight, i.e., during the day.

• After photosynthesis, plants use the glucose they need right away and store the remainder for later.

• Because plants don't use oxygen,they release it as a waste product through the same pores they used to take in carbon dioxide during day