The origin and evolution of plants

Article Catalog

1. Origin

2. Evolution process

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The origin of plants is very old. There were single-celled plants on the earth a long time ago, namely fungi and algae. At this time, the plant has only one cell, and its growth and life only rely on nutrients in the environment, and then gradually evolves into an autotrophic plant. The evolutionary process of plants is basically divided into the age of fungi and algae, the age of naked plants, the age of ferns, the age of gymnosperms and the age of angiosperms.

1. Origin

1. Origin

The origin of plants is very long. There were single-celled plants on the earth a long time ago. According to the current classification, they are fungi and algae. At this time, the plant has only one cell with a very simple structure. It is a prokaryotic cell and cannot absorb sunlight to synthesize nutrients through photosynthesis. It only relies on nutrients in the environment for growth and life. It cannot produce nutrients by itself. Only then will it gradually evolve into a plant that can produce nutrients on its own. The plants that are cultivated are cyanobacteria. They are relatively small, but they can already synthesize nutrients and release O2 just like real plants.

2. Evolutionary Process

About The evolutionary process of plants is basically divided into the age of fungi and algae, the age of naked plants, the age of ferns, the age of gymnosperms and the age of angiosperms. At first, they were just small fungi and algae. As the environment changed, the surrounding nutrients were unable to meet their growth needs, and they began to gradually evolve into complex ones. This led to the existence of lichens, which are composed of algae and hyphae, or Belongs to lower plants. Later, they gradually evolved into bryophytes, then ferns appeared, and as their functions increased, seed plants appeared.