PLANT PHYSIOLOGY
PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All plants and animals would die due to the absence of oxygen and carbohydrates (glucose) for respiration.
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All plants would die as they wouldn’t be able to produce carbohydrates, while animals would survive because they don’t carry out photosynthesis.
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All plants and animals would survive as they can carry out respiration, despite the absence of photosynthesis.
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None of the above
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Detailed explanation-1: -So, the correct answer is ‘Animals will die from the lack of oxygen’.
Detailed explanation-2: -Answer and Explanation: If photosynthesis on earth stopped, most of the plants would die off. Later, the animals that eat these plants would die, as would the carnivores. In other words, the food chain on both land and sea would collapse.
Detailed explanation-3: -Additionally, almost all the oxygen in the atmosphere is due to the process of photosynthesis. If photosynthesis ceased, there would soon be little food or other organic matter on Earth, most organisms would disappear, and Earth’s atmosphere would eventually become nearly devoid of gaseous oxygen.
Detailed explanation-4: -Without photosynthesis there would be no supply of oxygen and slowly the oxygen would get used up by oxidation such as rust formation. Furthermore, by removing plants, all of the many many animals that depend on plants would get very very hungry and gradually die.
Detailed explanation-5: -When green plants make food, they give off oxygen. This is a gas that all animals must breathe in order to stay alive. Without plants, animals would have no oxygen to breathe and would die.