Consider this experiment. A scientist fills a glass container with water and places an aquatic plant inside the container, then closes the lid and places the container in direct sunlight. The scientist observes small bubbles on the surfaces of the plant’s leaves on days 1 and 2, but no bubbles on day 3.

Question

Consider this experiment.  A scientist fills a glass container with water and places an aquatic plant inside the container, then closes the lid and places the container in direct sunlight.  The scientist observes small bubbles on the surfaces of the plant’s leaves on days 1 and 2, but no bubbles on day 3.

11. If the scientist concludes that the bubbles were caused by photosynthesis, then which reactant should be added to the water in order for the bubbles to reappear?

(1 point)
Responses

oxygen gas
oxygen gas

hydrogen gas
hydrogen gas

carbon dioxide
carbon dioxide

glucose sugar

GPT-4o mini · Answer

If the scientist concludes that the bubbles were caused by photosynthesis, then the reactant that should be added to the water in order for the bubbles to reappear is carbon dioxide.

During photosynthesis, plants use carbon dioxide, water, and sunlight to produce glucose and oxygen. The bubbles observed on the plant's leaves are likely oxygen produced as a byproduct of photosynthesis, which occurs when the plant has sufficient carbon dioxide available.