Introduction: Desert plants are adapted to survive in hot and dry conditions. They have evolved mechanisms to conserve water and energy. One of the critical processes for their survival is photosynthesis, which allows them to produce their food.

Daytime: Most desert plants carry out photosynthesis during the day. They have specialized structures called stomata, located on their leaves, which allow them to take up carbon dioxide. During the day, the stomata open to allow carbon dioxide to enter the plant. The carbon dioxide is then used by the plant in the process of photosynthesis to produce glucose and oxygen.

Temperature: Desert plants have developed mechanisms to deal with high temperatures during the day. They carry out photosynthesis at a temperature range of 15-40°C. When the temperature is high, they close their stomata to conserve water. Closing the stomata reduces the uptake of carbon dioxide, which affects the plant's photosynthesis rate.

Water: Water is a critical factor for desert plants' survival. They have adapted to survive with little water. During photosynthesis, they lose water through the stomata as water vapor. To conserve water, they carry out photosynthesis during the day when the temperature is high, and humidity is low. This reduces water loss through transpiration.

Conclusion: In summary, desert plants take up carbon dioxide and perform photosynthesis during the day. They have adapted to high temperatures and low humidity to conserve water during this process. The stomata on their leaves play a critical role in the uptake of carbon dioxide. Desert plants are an essential part of the ecosystem and have unique adaptations to survive in harsh conditions.

In these plants stomata opens at night and are usually closed during the day. The Carbon Dioxide is converted to an acid and stored during the night. During the day, the acid is broken down and the Carbon Dioxide is released to RUBISCO for photosynthesis.