NURSING EXAM QUESTIONS
NUTRITION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Meher wiped the leaves of a plant with an oily cloth to remove all the dust and to give it a shiny look. After a few days the plant died. Why?
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Water would not be absorbed as oil is a water repellant
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Sunlight cannot pass through the oil
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Oil would have dissolved the chlorophyll
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Oil would have blocked the stomata and prevented gas exchange
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Explanation:
Detailed explanation-1: -The Correct answer is c. Oil would have blocked the stomata and prevented gas exchange and therefore the plant died.
Detailed explanation-2: -These guard cells help in the opening and closing of stomata. If the leaves of a green plant are coated with oil, the stomata close and do not allow the exchange of gases, therefore causing adverse effects on the plant.
Detailed explanation-3: -Conclusion: When there is a vaseline coating on the leaves, the plants will not get sufficient carbon dioxide for photosynthesis, gaseous exchange will not take place, and there will be no transpiration.
There is 1 question to complete.