4. Sage conducted an experimental investigation of the gas production of a water plant. She placed a beaker upside down over a water plant submerged in water and collected the gas that the water plant produced when kept in sunlight. After several days, a large bubble of gas collected in the upside-down beaker. What is the best description of the makeup of the gas in the test tube? (SC.912.L.18.9)

Question

4. Sage conducted an experimental investigation of the gas production of a water plant. She placed a beaker upside down over a water plant submerged in water and collected the gas that the water plant produced when kept in sunlight. After several days, a large bubble of gas collected in the upside-down beaker. What is the best description of the makeup of the gas in the test tube? (SC.912.L.18.9)
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The gas contains one of the products of respiration, oxygen.
The gas contains one of the products of photosynthesis, oxygen.
The gas contains one of the products of respiration, carbon dioxide.
The gas contains one of the products of photosynthesis, carbon dioxide.

GPT-4o mini · Answer

The best description of the makeup of the gas in the test tube is:

The gas contains one of the products of photosynthesis, oxygen.

During photosynthesis, water plants (such as elodea or other aquatic plants) use sunlight to convert carbon dioxide and water into glucose and oxygen. The bubbles of gas collected in the beaker would primarily be oxygen, which is released as a byproduct of photosynthesis.