What is a plant's respiratory system

Definition In living beings, breathing is the absorption of oxygen and the release of carbon dioxide and water. Breathing occurs in humans, in all animals, green plants and some fungi and bacteria. It is vital for these living beings and takes place all the time.

A distinction is made between internal and external breathing. Internal and external breathing are two different processes. Internal respiration is also called cellular respiration. It includes the metabolic processes for generating energy in the cells. The cell absorbs oxygen, which is needed to convert carbohydrates, proteins and fats into water and carbon dioxide. This process is a form of dissimilation. This releases energy. In most cells, internal respiration takes place in special cell components. These cell components are called mitochondria. The waste product carbon dioxide is given off again by the cell. Cell respiration occurs in almost all living things in every living cell.

In multicellular, more highly developed organisms, the carbon dioxide released by the cells must be excreted from the body. It is transported away in the body and released into the environment via the respiratory organs. At the same time, oxygen is absorbed by the respiratory organs and transported to the cells. This gas exchange between the living being and its environment is called external respiration. Humans breathe with their lungs, fish with gills and insects through a system of tubes, the so-called tracheal system. More developed plants breathe through tiny stomata on the underside of the leaves.

Photosynthesis is a metabolic process that is the reverse of cellular respiration. In the process, carbon dioxide is absorbed, energy is consumed and oxygen is given off.