| (i) | It takes the use of computers |
| (ii) | It is based on all observable characters of organisms |
| (iii) | Number and codes are assigned to all the characters, data are then processed |
| (iv) | Each character is given equal importance |
| (v) | Hundreds of characters can be considered at the same time |
| Column-I | Column-II | ||
| A. | Chemotaxonomy | (i) | Cytological information |
| B. | Numerical taxonomy | (ii) | Nuclear information |
| C. | Cytotaxonomy | (iii) | RNA sequencing |
| D. | Karyotaxonomy | (iv) | Computers |
| Column I | Column II | ||
| A. | Numerical taxonomy | (i) | Linnaeus |
| B. | Phylogenetic system of classification | (ii) | Adanson |
| C. | Natural system of classification | (iii) | Engler and Prantl |
| D. | Artificial system of classification | (iv) | Bentham and Hooker |
Herbarium, Botanical gardens, Museum, Zoological parks and Key are considered as:
1. Trophic aids
2. Environmental aids
3. Pollution aids
4. Taxonomical aids
| a. | Keys are based on the similarities and dissimilarities. |
| b. | Key is analytical in nature. |
| c. | Keys are based on the contrasting characters in pair called couplets. |
| d. | Same key can be used for all taxonomic categories. |
| e | Each statement in the key is called Lead. |