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 surface of the plant 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? Answer choices hydrogen gas, glucose, carbon dioxide, oxygen

Answer 1

The bubbles observed on the surface of the plant leaves are due to the process of photosynthesis. During photosynthesis, plants take in carbon dioxide from the environment and release oxygen as a byproduct. Therefore, the substance that should be added to the water in order for the bubbles to reappear is carbon dioxide.