Who Named Plants And Animals?

Until 1735, there were no universal 'names' for plants, each language had its own words for plants and animals.  Some countries had dialects which meant that if you lived in one part of the country you would not understand the term used in another region.
This caused some confusion, particularly for scientists and students.
So, in 1735, a Swedish scientist, Carl von Linne (known as Linnaeus) wrote a definitive guide in Latin, which was called Systema Naturae.    He gave all plants and animals two names,a  generic name and a specific species name.  Plants or animals which genetically are very similar have the same generic name (the genus) and then the specific name which is the species.  
Latin was used for the basis of the names, since this was the universal language of the day and so it established a common ground.  This method of classification is still used as the means of classifying plants and animals, even today.