Question

The taxonomical aid called dichotomous key is

• A. useful in classification of animals and plants
• B. based on similarities and dissimilarities of characters
• C. common for taxonomic categories like genus, family
• D. an index to the flora of a particular area

Answer 1

The correct option is B based on similarities and dissimilarities of characters

Key is a taxonomical aid used for identification of plants and animals. A dichotomous key has two statements each having a contrasting pair of a particular characteristic. Each statement is called a lead. Two leads together is called a couplet. Based on which lead an organism matches, it is identified.