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Question
During day time, CAM(Crassulacean acid metabolizing): Plants procure CO2 for photosynthesis from _____________.
During day time, CAM(Crassulacean acid metabolizing): Plants procure CO2 for photosynthesis from _____________.
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Solution
The correct option is D Malic acid
Crassulacean acid metabolism, also known as CAM photosynthesis, is a carbon fixation pathway that evolved in some plants as an adaptation to arid conditions. In a plant using full CAM, the stomata in the leaves remain shut during the day to reduce evapotranspiration but open at night to collect carbon dioxide and allow it to diffuse into the mesophyll cells. The carbon dioxide is stored as the four-carbon acid malic acid in vacuoles at night, and then in the daytime, the malate is transported to chloroplasts where it is converted back to Carbon dioxide which is then used during photosynthesis.So the correct answer is option D.
Crassulacean acid metabolism, also known as CAM photosynthesis, is a carbon fixation pathway that evolved in some plants as an adaptation to arid conditions. In a plant using full CAM, the stomata in the leaves remain shut during the day to reduce evapotranspiration but open at night to collect carbon dioxide and allow it to diffuse into the mesophyll cells. The carbon dioxide is stored as the four-carbon acid malic acid in vacuoles at night, and then in the daytime, the malate is transported to chloroplasts where it is converted back to Carbon dioxide which is then used during photosynthesis.
So the correct answer is option D.
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