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
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the plant grows, flowers, and seeds
the plant grows and thrives
the plant goes into hibernation
the plat withers and dies
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The scientist will observe that the plant's leaves start wilting or drooping. This is because the petroleum jelly creates a barrier on the leaf surface and blocks the stomata, which are responsible for gas exchange (mainly water vapor and oxygen in, and carbon dioxide out). By blocking the stomata, the plant is unable to release excess water vapor through transpiration, leading to an accumulation of water in the leaf's cells. This excess water causes the cells to become turgid and lose their rigidity, resulting in the leaves wilting or drooping.
The scientist will observe the following steps or outcomes:
Step 1: The scientist applies petroleum jelly to the underside of plant leaves, which blocks the stomata. Stomata are tiny openings on the surface of leaves that allow for gas exchange, including the intake of carbon dioxide and the release of oxygen.
Step 2: The plant continues to be watered. Water is essential for plant growth and is transported through the plant's vascular system. The roots absorb water from the soil, and it is transported upwards through the stems to the leaves.
Step 3: The plant is located in a sunny spot. Sunlight is crucial for photosynthesis, the process by which plants convert sunlight into energy in the form of glucose. Photosynthesis requires carbon dioxide (CO2) intake through the stomata, as well as water and sunlight.
Step 4: The scientist will observe that the blocked stomata prevent the intake of carbon dioxide (CO2) from the air. As a result, the plant's ability to perform photosynthesis and produce glucose will be impaired. This can potentially lead to decreased growth, wilting, or other signs of stress.
Step 5: Additionally, without proper gas exchange through the stomata, there might be an accumulation of oxygen inside the leaves. This can interfere with the electron transport chain in photosynthesis and may lead to metabolic imbalances or reduced energy production.
In summary, by blocking the stomata with petroleum jelly, the scientist will observe reduced photosynthetic activity, which can result in the plant experiencing growth issues or stress.
By blocking the stomata of the plant leaves with petroleum jelly, the scientist is preventing the exchange of gases (such as carbon dioxide and oxygen) through the leaf surface. This will have an impact on the plant's ability to photosynthesize, as photosynthesis requires carbon dioxide to enter the leaf and oxygen to exit.
Given that the plant is being watered and located in a sunny spot, the scientist will observe the following:
1. Reduced growth: The plant may exhibit slower or stunted growth compared to a plant with unblocked stomata. This is because photosynthesis is vital for the production of sugars and energy required for growth.
2. Discolored leaves: The plant may have yellowing or browning leaves. This is because reduced photosynthesis affects chlorophyll production, leading to a loss of the green color, indicating a lack of vital nutrients.
3. Wilting: Due to the blocked stomata, water vapor cannot escape through transpiration. This may result in excess water accumulating in the plant tissues, causing wilting.
4. Potentially damaged leaves: The lack of carbon dioxide entering the leaves can result in the accumulation of toxic compounds, damaging the leaf tissue. This may lead to necrosis or death of the affected leaves.
Overall, the scientist will observe signs of reduced growth, discoloration, wilting, and potentially damaged leaves in the plant. These observations can help the scientist understand the importance of stomata in the plant's physiological processes.