Homeostasis in plants includes the regulation of carbon dioxide and water levels necessary to perform photosynthesis. Homeostasis in plants also allows plants cells to store the proper amount of water in their cells to help keep them from wilting and dying during times of drought.
The homeostasis the process by which the plants maintain the various types of metabolic activities in their body. The plants maintain homeostasis by making food by the help of the process known as photosynthesis.
This process helps in producing glucose for the plant body which can be used to maintain the various cellular processes inside the plant body.
Hence, photosynthesis is essential for plant body to make food for the plant.