Plants, also called green plants (Viridiplantae in Latin), are multicellular eukaryotes of the kingdom Plantae.
Green plants have cell walls with cellulose and characteristically obtain most of their energy from sunlight via photosy
Precise numbers are difficult to determine, but as of 2010, there are thought to be 300–315 thousand species of plants,
In plants, the ability to recognize self from nonself plays an important role in fertilization, because self-fertilization will result in less diverse offspring than fertilization with pollen from another individual. Many genes with reproductive roles also have antibacterial and immune functions, which indicate that the threat of microbial attack on the sperm or egg may be a major influence on rapid evolution during reproduction.