Question

Classification based on chromosome number is

• A. Cytotaxonomy
• B. Numeral taxonomy
• C. Karyotaxonomy
• D. Biochemical

Answer 1

The correct option is A Cytotaxonomy

• Taxonomy is the branch of science which deals with the naming and classification of living organisms on the basis of similarities and dissimilarities.
• Cytotaxonomy deals with the classification of living organisms on the basis of their cellular structure especially the chromosome number, meiotic behaviour and its structure.
• Numeral taxonomy involves the grouping of numerical methods of taxonomic units based on their character states. It creates a taxon by using numerical algorithms where the organisms having same characteristics are group into a cluster. The organism of a cluster is completely different from the other.
• Karyotaxonomy deals with the classification of living organisms on the basis of the structure of the nucleus. Chromosome number, the structure of chromosomes, size and shape of chromosomes are the attributes which are used for classification.
• Biochemical taxonomy is the taxonomy where the living organisms are classified on the basis of their internal chemical composition. It is also known as chemotaxonomy.
• So, the correct answer is option A.