A scientist fills a glass container with water and places an aquatic plant inside the container with water and places an aquatic plant inside the container, then closes the lif an dplaces the container in direct sunlight. The scientist ibserves small bubbles on the surface of the plants leaves on day 1 and 2. but no bibles on day 3. Thee scientist concludes that the bubbles were caused by photosynthesis. Which substance should be added to the water in order for bubbles to reappear?

Question

Glucose

Hydrogen gas

Carbon dioxide

Oxygen

Answer 1

To promote photosynthesis and encourage the reappearance of bubbles on the plant's leaves, the scientist should add carbon dioxide to the water.

Photosynthesis in aquatic plants requires carbon dioxide, water, and light. The bubbles observed on the leaves were likely oxygen, which is a byproduct of photosynthesis. If there is insufficient carbon dioxide available in the water, the rate of photosynthesis will decrease, resulting in fewer or no bubbles. By adding carbon dioxide, the scientist can enhance the photosynthetic process, leading to the production of more oxygen bubbles.