Question

which is the most likely reason that’s cactus use this special photosynthesis process

Answer 1

To conserve water
It allows the cactus to keep the stoma or leaf openings closed during the night

Answer 2

conserve water. Cactus plants grow in dry and arid conditions. These plants have adapted to perform CAM (crassulacean acid metabolism) photosynthesis, which helps them to conserve water.Oct