According to biological definition, species is a group of organisms that can produce fertile offsprings through sexual reproduction. Species is the basic level of classification. Organisms of a species share maximum similarity of features. Organisms of similar species constitute the genus. Similar genus constitute the family and families join to form the order. Various orders constitute the class. Related classes join to form phylum. All phyla constitute the kingdom, which is the highest level. Observe the illustration given below and discuss it on the basis of the indicators. Write down your inferences in the science diary.
Illustration 12.3 Kingdom Animalia Phylum Chordata Class Mammalia Order Carnivora Includes all animals. Includes vertebrates only. Includes the vertebrates that feed their young ones with milk. Mammals that have teeth to tear off flesh. Family Felidae Genus Felis Species domesticus Those with withdrawable claws along with the features of the order- Carnivora. Shows features of the family Felidae. Small sized body. No roaring sound. Along with the features of the genus Felis, shows unique features of the domestic cat. 172 Basic Science VIII