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

glucose
glucose

oxygen
oxygen

carbon dioxide
carbon dioxide

hydrogen gas

GPT-4o mini · Answer

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

During photosynthesis, aquatic plants use carbon dioxide, sunlight, and water to produce glucose and oxygen. The bubbles observed on the plant's leaves are likely oxygen being released as a byproduct of the photosynthesis process. Without an adequate supply of carbon dioxide, the plant won't be able to carry out photosynthesis effectively, and thus the formation of bubbles will decrease or stop.