Question

The taxonomical aid called dichotomous key is:

• A. Based on similarities and dissimilarities of characters.
• B. Useful in classification of animals and plants.
• C. An index to the flora of a particular area.
• D. Common for taxonomic categories like genus, family.

Answer 1

The correct option is A 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 the lead which an organism matches, it is identified.