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 hydrogen gas hydrogen gas carbon dioxide carbon dioxide oxygen

Answer 1

In the context of photosynthesis, plants use carbon dioxide and sunlight to produce glucose and oxygen. Since the bubbles observed on the leaves are likely oxygen produced during photosynthesis, adding carbon dioxide to the water would help stimulate photosynthesis and lead to the reappearance of those bubbles. Therefore, the correct answer is:

carbon dioxide