HORTICULTURE

Detailed explanation-1: -CO2 required for photosynthesis enters the plant during the night when stomata are open. Then, this carbon dioxide is fixed during the night but form sugars only during the day when RuBisCO is active. Sedum, Kalanchoe, Pineapple, Opuntia are the examples of CAM plants.

Detailed explanation-2: -How CAM Plants are able to fix carbon at night so they don’t have to keep their stomata open during the day.

Detailed explanation-3: -Crassulacean Acid Metabolism (CAM) Photosynthesis In this pathway, stomata open at night, which allows CO2 to diffuse into the leaf to be combined with PEP and form malate. This acid is then stored in large central vacuoles until daytime. During the day, malate is released from the vacuoles and decarboxylated.

Detailed explanation-4: -Carbon Fixation in CAM Plants CAM pathway of carbon fixation or Crassulacean acid metabolism is present in plants present in arid conditions, e.g. cactus. In the CAM pathway, plants take CO2 during the night through the stomatal opening. It is converted to malic acid (4 carbon compound) and stored in vacuoles.

Detailed explanation-5: -CAM Photosynthesis is for Plants Adapted to Dry Environments CAM plants are often found in desert environments. It is too hot and/or dry to keep stomata open during the day, so they only open them at night. However, there is no light at night to do photosynthesis.