Succulents are known to keep their stomata cl | vedclass

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(A) Succulents,which are xerophytic plants,grow in environments where water is scarce. To prevent excessive water loss through transpiration,they keep

Vedclass · Accepted Answer

They take up $CO_2$ at night and store it as malic acid.

Vedclass · Answer

(A) Succulents,which are xerophytic plants,grow in environments where water is scarce. To prevent excessive water loss through transpiration,they keep their stomata closed during the day.These plants utilize a specialized metabolic pathway known as Crassulacean Acid Metabolism $(CAM)$.During the night,when the temperature is lower and humidity is higher,the stomata open,allowing $CO_2$ to enter. This $CO_2$ is fixed into organic acids,primarily malic acid,which is a $4$-carbon compound.During the day,the stomata remain closed to conserve water. The stored malic acid is decarboxylated to release $CO_2$ internally,which then enters the Calvin cycle within the photosynthetic cells to facilitate photosynthesis.

Succulents are known to keep their stomata closed during the day to check transpiration. How do they meet their photosynthetic $CO_2$ requirements?

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