Plant Systematics Importance Aims Principle and Modern Trends

‪@biologywithmuhammadsajid‬ #biologywithmuhammadsajid Plant Systematics Importance Aims Principle and modern trends It is used to describe different species. The description of each new species is preserved. It is used for comparison.
Plant systematic is used to name different plants. It sets rule for nomenclature. ,This nomenclature has eliminated the confusion among different botanists. Now knowledge of plants can be shared between botanists of different countries without problem of language and culture.
Plant systematic develops evolutionary relationship among the different groups of plants. It gives evolutionary trends among the plants.
Plant systematic provides basis kw the comparison of morphological, anatomical and cytological structures among different structures
Plant systematic also provides basis of genetics. Genetic analysis are performed on the basis of systematic,
Plant systematic has great importance in agriculture and herbal medicines. It provides us economic importance of different plants.
To classify the plant Kingdom and
(b) To identify and name a plant and fix its rank in a recognised system of classification.
This is done by using almost entirely the external morphological characters, i.e., gross morphology. Such taxonomy is called “classical” or “orthodox” or “alpha” taxonomy to distinguish it from “experimental” taxonomy where cytological or embryological evidences are also taken into consideration.
The latter is also known as “omega” taxo­nomy or “biosystematics” and concerns chromosome morphology, chromosome number, breeding behaviour and barriers. Recent trend in taxonomy is to recognise character combination for taxonomical grouping. Here mathematical techniques are applied to assess similarity and dispa­rity through diagrams and using mathematical coefficients. This is called “numerical” taxonomy.
To make use of the results of chemical analysis or tests of plant-parts and products in study of taxonomy is called Chemotaxonomy. This involves a study of the starch grains and rap-hides, study of plant-products, e.g. alkaloids, resins, etc. and serolo­gical tests.
Chemical characters, however, should not be regarded as more important than other characters. They are often affected by environmental factors such as temperature, mineral deficiencies, etc.
It is possible that chemical and morphological features may have followed different evolutionary pathways. Comparative chemistry and serology are aids to establishing consanguinity, not phylogeny proper, which involves the tracing of phyletic lines back into the past. botany zoology microbiology mycology pathology biochemistry genetics molecular biology biotechnology cytology physiology Biology With Muhammad Sajid for FSC BS A-Level MSC Student

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