Systematic biology (bio404)

BIOLOGICAL TAXONOMY Features of biological Taxonomy

Download 1.95 Mb.

Page	2/3
Date	08.09.2023
Size	1.95 Mb.
	#62017

1 2 3

SYSTEMATIC BIOLOGY (BIO404) pp

BIOLOGICAL TAXONOMY

Features of biological Taxonomy

Taxonomic hierarchy
1707 - 1778
A. Plants are characterized by their features or characters & character states

any observable attribute
chemical, anatomical, morphological

B. Plant character states

green
non-motile
eukaryotic
multi-cellular
walls of cellulose
alternation of generations

Kingdom: The highest formal taxonomic classification into which organisms are grouped.
Division/phylum: A primary division of the kingdom ranking above a class.
Class: A primary taxonomic category of organisms ranking below a phylum and ranking above an order.
Order: A primary taxonomic category of organisms ranking below a class and above a family.
Family: A primary taxonomic category of organisms ranking below an order and above a genus.
Genus: A primary taxonomic category of organisms ranking below an order and above a genus. It is comprised of species displaying similar characteristics. In taxonomic nomenclature, the genus is used, either alone or followed by A Latin adjective or epithet, to form the species name.
Species: A primary taxonomic category of organisms, ranking below a genus and comprised of related organisms capable of interbreeding
Features of Biochemical taxonomy
Chemotaxonomy is used for the classification of plants on the basis of their chemical constituents. Plants produce numerous types of chemicals and these organic compounds are called:
BIOCHEMICAL TAXONOMY 1968 - 1978

Primary metabolites (biomolecules): These are the compounds that are involved in the fundamental metabolic pathways. Most of the primary metabolites are of universal occurrence and utilized by the plant itself for growth and development.

For example, carbohydrate sedoheptulose present in genus sedum in large quantity. The water soluble polysaccharides (WSP) are also used as chemotaxonomic markers. The glucose and rhamnose content of WSP could be used to distinguish the three landraces of annatto trees

Download 1.95 Mb.

Share with your friends:

1 2 3