Question

In CAM plants, why does acid concentration increase during night?

Answer 1

Crassulacean acid metabolism, also known as CAM photosynthesis, is acarbon fixation pathway that evolved insome plants as an adaptation to arid conditions. In a plant using full CAM, the stomata in the leaves remain shutduring the day to reduce evapotranspiration, but open at nightto collect carbon dioxide (CO2).

Answer 2

Dear Student,

● Acid concentration increase during night in CAM plants because -

• In CAM plants, stomata are open during night for collection of CO2.
• This CO2 is fixed by carboxylase enzyme to malic acid.
• Hence, acid concentration increase during night in CAM plants.

◆ Extra information about CAM plants -

• CAM photosynthesis is a carbon fixation pathway that evolved in some plants as an adaptation to arid conditions.
• In these plants, stomata remain closed during day to reduce photo respiration.
• Stomata are open during night for collection of CO2.
• As succulents plants have low surface to volume ratio, they're oftenly associated with CAM pathway.

Hope this helped you. Thanks for asking..