Plant cells are powered by chemical energy found primarily in carbohydrate molecules, synthesized by a single process called photosynthesis. Some organisms use photosynthesis to transform daylight into chemical energy and then produce carbohydrate molecules. When a plant breaks down food, the force that holds these molecules together is released. The cells subsequently use the energy to carry out tasks such as oxygenation. Most of the energy needed by living things on earth comes from photosynthesis. Oxygen must be released into the atmosphere as a byproduct of photosynthesis. Therefore, humans and the animal kingdom rely almost entirely on organisms that produce photosynthesis. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay Since their origins, land plants have had to live in a harsh environment. Intense temperature, insufficient or excessive water, increased salinity are just some of the physical or chemical factors harmful to them. Agriculture and the environment are both in grave danger due to these challenges. Changes in metabolic processes, such as reduced nutritional absorption and glucose metabolism, are induced by the detrimental impacts of various stress combinations combining high temperatures and their implications on photosynthetic performance. Whole plant physiological reactions are altered due to protective metabolic adaptations. Metabolite production by plants is believed to represent a plant's adaptive capacity to cope with stressful constraints in the environment, which may include the production of complex chemical types and interactions in structural and functional stabilization processes and pathways. For example, the movement of stomatal cells, which govern gas exchange, is affected by the sun's rays. This has an impact on CO2 absorption and transpirational cooling of the leaves. Heat is a significant source of stress. Xylem flow and water transpiration affect nutrient intake and distribution. Light and nutrients interact. The assimilation of inorganic nitrogen and sulfur and the signaling functions of carbon nitrogen throughout the plant are all influenced by the assimilation of CO2 and nutrients. In order for plants to adapt to such harsh conditions, phytohormones play an essential role in assisting them. They are excellent candidates for mediating defense responses due to their complex signaling networks and propensity for crosstalk. Functional differences between plant genotypes and species growing in different environments are based on changes in developmental processes. Because other organs and tissues of a plant are affected by various environmental stresses, a plant's molecular, cellular, and morphological responses to stress change from one tissue to another and throughout its life cycle. The ability of a plant of a given genotype to dynamically adapt these developmental processes in response to the environment, and the range of developmental processes across genotypes, is key to plant success in natural and agricultural settings. Please note: this is just a sample. Get a custom paper from our expert writers now. Get a custom essay. Both traditional and modern breeding applications for stress tolerance will benefit from a better understanding of how plants respond to abiotic stress. Over time, farmers and botanists have found solutions to raise plants even if exposed to an environment.