Question

In certain group of plants stomata remain closed during day. How is food synthesized in such plants?

Answer 1

Succulent plants:

Plants that grow in dry conditions and keep their stomata closed during the day time to prevent transpiration or loss of water are called succulent plants.

Examples: cacti and other xerophytes belong to the group of succulent plants.

CAM photosynthesis:​

The succulent plants undergo a special form of photosynthesis called CAM photosynthesis. The green pigment called chlorophyll in the succulent plant traps the sunlight during the day and it opens the stomata during the night for gaseous exchange. Carbon dioxide from the atmosphere enters the plant and it is fixed during the night.