Growth factors and cytotoxic factors also regulate inflammatory response. These cytokines and other chemicals recruit immune cells to the site of infection and promote healing of damaged tissue following the removal of pathogens. NFkB plays a key role in regulating the immune response to infection.
Stomata facilitate the exchange of gases in the leaf. Carbon dioxide (CO 2 ) diffuses into the leaf through the stomata for use in photosynthesis, and oxygen (O 2 ), the waste product of photosynthesis, diffuses out of the leaf through stomata. Stomata are also crucial for water transport through the xylem .
The three organs of a plant are leaves, roots, and stems. As in animals, the organs of the plant interact and depend on each other. One organ cannot live without the substance â¦ s and activities provided by the other two organs. Plant organs make up two organ systems: the root system and the shoot system.lants have two organ systems: the root system and the shoot system. The root system consists of the ground meristem, root cap, endo â¦ dermis, epidermis, parenchyma, etc in the roots. The shoot system consists of the main stalk, branchings, leaves, etc.