PLANT PHYSIOLOGY
PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It will make more glucose.
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It will make less glucose.
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It will have no effect on photosynthesis.
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The plant will grow faster.
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Detailed explanation-1: -In the event that plants cease to take up CO2 all together, they will cease to convert sunlight into carbohydrates, and die.
Detailed explanation-2: -As a life force behind photosynthesis, lack of this gas would create a domino effect with the food chain – no living plants and animals would mean no living humans.
Detailed explanation-3: -If carbon dioxide is completely removed from a plant’s environment, we would expect the plant to stop producing high-energy sugars altogether. CO2 is necessary for the plant to perform photosynthesis, meaning without CO2 the plant has no way to obtain energy-it will likely die in this scenario.
Detailed explanation-4: -The Calvin-Benson cycle, in which carbon is fixed, reduced, and utilized, involves the formation of intermediate sugar phosphates in a cyclic sequence.
Detailed explanation-5: -So the plant might grow a bit in the dark, without photosynthesis, from stored reserves, and might continue to survive for a couple weeks or more without growing, but in the long term the plant will not be able to grow or live without photosynthesis and would eventually die.