Q1. Which organisms are called primitive? Ans. Primitive organisms are those which have ancient b...

Q1. Why was the method of classification of animals proposed by Aristotle not accepted? Ans. Aris...

Q.22. List out some common features in cat, rat and bat. Ans. Bat, rat and cat belong to the clas...

Q1. What is a species? Give its main features. Ans. Species is defined as a dynamic group of orga...

Q1. Describe the three main characteristics that are used for a hierarchical classification. Ans....