Question

If the bubbles given off by the plants were collected and tested, the gas present would MOST likely be

(A) oxygen
(B) hydrogen
(C) nitrogen
(D) carbon dioxide ​

Answer 1

Answer: D

Explanation: To prove that oxygen is a by-product of photosynthesis, you can set up an experiment with an aquatic plant and capture the gas it emits in response to photosynthesis.