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. The scientist concludes that the bubbles were caused by photosynthesis. Which substance should be added to the water in order for the bubbles to reappear?(1 point)

Question

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. The scientist concludes that the bubbles were caused by photosynthesis. Which substance should be added to the water in order for the bubbles to reappear?(1 point)
Responses

hydrogen gas
hydrogen gas

carbon dioxide
carbon dioxide

oxygen
oxygen

glucose

GPT-4o mini · Answer

The substance that should be added to the water in order for the bubbles to reappear is carbon dioxide.

In photosynthesis, aquatic plants use carbon dioxide, sunlight, and water to produce glucose and oxygen. The bubbles observed were likely oxygen being released as a byproduct of the photosynthesis process. Without sufficient carbon dioxide in the water, the plant would not be able to perform photosynthesis effectively, and the production of oxygen bubbles would decrease or cease.