The smallest photosynthetic autotroph on the earth is Prochlorococcus, a unicellular organism with a diameter of about 500 to 700 nanometers. At the same time, it is the largest photosynthetic autotroph on the earth last year, with an average number of 28 × 10 27 to 34 × 10 27 and a carbon content of about 17 1 100 million tons. There are two ecotypes of Prochlorococcus.

The smallest photosynthetic autotroph on the earth is protochlorophyllum. Photosynthesis refers to the process that green plants absorb light energy, synthesize high-energy organic matter from carbon dioxide and water, and release oxygen at the same time. Progreen algae is a unicellular organism with a diameter of about 500,700 nanometers, and it was also the largest photosynthetic autotroph on the earth last year.

Smaller than them are prokaryotes without nuclei, including bacteria and archaea, which are also producers in the ocean. They can produce organic matter, and the smallest organic matter, such as Prochlorococcus, is less than one micron, making it the smallest autotrophic organism in the world. Smaller than them are viruses, measured in nanometers.

Photosynthetic autotrophy

Plants are called producers of food chain because they can use inorganic substances to produce organic substances and store energy through photosynthesis. By eating, consumers in the food chain can absorb the energy stored by plants, with an efficiency of about 30%.

For almost all creatures in the biological world, this process is the key to their survival. Photosynthesis is very important for the carbon and oxygen cycle on the earth.