A scientist performs an experiment by placing petroleum jelly on under side of plant leaves. This blocks the leaves’ stomata. The plant continues to be watered and is located in a sunny spot. What will the scientist observe

The scientist will observe that the plant's leaves may start to wilt or show signs of wilting. This is because the stomata, which are tiny openings on the underside of the leaves, are responsible for the exchange of gases such as carbon dioxide and oxygen. By blocking the stomata with petroleum jelly, the plant will have limited access to carbon dioxide, an essential component for photosynthesis. This will negatively affect the plant's ability to produce energy through photosynthesis and could result in reduced growth, yellowing or browning of the leaves, and overall decline in plant health.