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
glucose
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GPT-4o mini · Answer

To encourage photosynthesis in the aquatic plant so that the bubbles reappear, the scientist should add **carbon dioxide** to the water. Photosynthesis requires carbon dioxide, along with sunlight and water, to produce oxygen and glucose, which is what causes the bubbles to form on the plant's leaves.