How Many Species of Plants Are There?

Plants are one of the main forms of life and include familiar organisms such as trees, shrubs, vines, grasses, ferns, and green algae, lichens. Among plants such as seed plants, bryophytes, ferns and gymnosperms, it is estimated that there are approximately 350,000 species in existence. Most of the energy of green plants is obtained from sunlight through photosynthesis. Temperature, humidity, light and fresh water are the basic requirements for plant survival. Seed plants have six major organs: roots, stems, leaves, flowers, fruits, and seeds. Green plants have the ability of photosynthesis-with the help of light energy and chlorophyll, enzymes catalyze the use of water, inorganic salts and carbon dioxide for photosynthesis, releasing oxygen, absorbing carbon dioxide, and producing organic substances such as glucose for use by plants.

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In the natural world, all living organisms belong to living things. Organisms should be divided into several realms. The organisms that can live and support themselves are called

Plants have six major organs:

Most solid matter in plants is obtained from the atmosphere. Through a process called photosynthesis, plants use energy from sunlight to convert carbon dioxide in the atmosphere into simple sugar. These sugars are used as building materials and constitute the main structural components of plants. Plants mainly rely on soil as support and water, as well as important basic nutrients such as nitrogen and phosphorus. For most plants to grow successfully, they also need oxygen in the atmosphere (for breathing) and oxygen around the roots. However, some special vascular plants, such as mangroves, allow their roots to grow under hypoxia. ^[5]

Photosynthesis by terrestrial plants and algae is the original source of energy and organic matter in almost all ecosystems. Photosynthesis fundamentally changed the composition of the early Earth's atmosphere to 21% oxygen. Animals and most other organisms are aerobic and rely on oxygen to survive. Plants are producers in most terrestrial ecosystems and form the basis of the food chain. Many animals rely on plants as their habitat, as well as providers of oxygen and food.

Terrestrial plants are key to the water cycle and several other material cycles. Some plants (such as legumes) co-evolved with nitrogen-fixing bacteria, making plants an important part of the nitrogen cycle. Plant roots also play an important role in soil development and in preventing soil erosion. ^[8]

Thousands of plant species are planted to beautify the environment, provide shade, adjust temperature, reduce wind speed, reduce noise, provide privacy and prevent

Scientists have long known that some venereal fungi can be transmitted through plant pollen. Although plant sexually transmitted diseases, like most animal sexually transmitted diseases, are not fatal to host plants. However, the concept of sexually transmitted diseases in animals is not exactly the same as that in plants.

First, fungal spores that cause plant infectious diseases are usually transmitted between plants through wind or pollinating insects, while animal venereal diseases are transmitted through direct physical contact. Specifically, the most researched plant venereal disease is caused by a bacterium called Micobotryum violaceum, which can infect the plants of the species Campanula.

After being infected with antheraea, both male and female plants become hotbeds of venereal fungal spores, which can then be transmitted by bumblebees or other pollinators. Sometimes, these fungi can even stimulate diseased plants to produce extra flowers to spread the infectious bacteria more effectively.

Second, Swedish botanists Anders Wennstrom and Lars Ericson studied many other flower fungi. They found that some STD fungi can also enter the soil from plant flowers, infecting the next generation of plants in the coming year.

Some STD fungi can be transmitted to the seeds, leaves or stems of other plants through the flowers of the plants. Because these ways of infectious diseases do not require that both plants have a sexual organ, scientists believe that these plant diseases may be called reproductive diseases rather than sexually transmitted diseases. ^[13]