Which Greek philosopher suggested the classification of organisms?

What are the drawbacks/limitations of the Two Kingdom classification system?

Which scientist classified plants into trees,shrubs and herbs and animals into two groups based on the absence or presence of red blood cells?

The Linnaeus system of plant classification is:

Who introduced the three-domain system of classification? Explain its main features.

Statement $S$: The classification system proposed by Woese is called the three-domain system. Reason $R$: Woese divided organisms into three domains: Archaea,Bacteria,and Eukarya.