Animals, dogs and mammals represent
| 1. | Taxa at different levels |
| 2. | Taxonomic hierarchy |
| 3. | Taxa at equivalent level |
| 4. | Categories at equivalent level |
Study of diversity of organisms and evolutionary relationship amongst them on the basis of all possible characters is called as
| 1. | Taxonomy | 2. | Systematics |
| 3. | Alpha-taxonomy | 4. | Phylogeny |
First step of taxonomy is
| 1. | Classification |
| 2. | Nomenclature |
| 3. | Identification |
| 4. | Characterisation |
Practical purpose of taxonomy or classification is to:
| 1. | facilitate the identification of unknown species |
| 2. | explain the origin of organisms |
| 3. | know the evolutionary history |
| 4. | identify medicinal plants |
The term ‘systematics’ refers to
| 1. | identification and study of organ systems |
| 2. | identification and preservation of plants and animals |
| 3. | diversity of kinds of organisms and their relationship |
| 4. | study of habitats of organisms and their classification |
Biosystematics aims at:
| 1. | The classification of organisms based on broad morphological characters |
| 2. | Delimiting various taxa of organisms and establishing their relationships |
| 3. | The classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies |
| 4. | Identification and arrangement of organisms on the basis of cytological characteristics |