Into how many domains is the classification system of $Carl$ $Woese$ divided?

Most important criteria used for the present day classification of living organisms is based on

Select the correct option for the earlier classification system (the system given by $Linnaeus$).

Which of the following systems of classification involves the usage of one or a few morphological characters for the grouping of organisms?

Which of the following is a domain of eukaryotic organisms?

What was the contribution of Aristotle $(382-322 \text{ BC})$ to the field of biological classification?