Classify the diversity of organism in different groups, Biology

Assignment Help:

Q. Classify the diversity of organism in different groups

• The goal of taxonomy is to develop a workable classification that reflects evolutionary relationships and provides identification and nomenclature.

• Species represent lineages produced by evolution and branching genetic relationship exists among the taxa of each group.

• Categories such as species, genera, families and orders are not rigid but are flexible and individually delimited for each group. Hierarchy is established by International Code of Botanical Nomenclature for plants and International Code of Zoological Nomenclature for animals.

• Taxa are based on the correlation of characters and discontinuities in the variation pattern. Any attribute of the plant animal may be selected as character and they do not have fixed value at all ranks.

• The selected character should be constant and must show little environmental variation for delimiting taxa.

• Taxa should be monophyletic. Taxonomic treatments should be practical and consistent in their use of the various categories.

• Taxa may resemble one another because of either convergence or parallelism.

• In the development of classification whenever possible, taxa should be sampled throughout their range and all taxa at lower ranks should be examined.

• Ancestral features and trends of diveFsity may often be recognised in the structure of living organisms.

• Ancestral organisms should be given careful consideration.

• Evolution may result in reduction or loss of parts which should also be taken into consideration.

• Morphological characters should be given proper importance because they provide guidance to primitive versus advanced features and aid in developing phylogenetic relationships. Thinking should be very flexible so that modifications in classification may be made as soon as new evidence is available.

• In phenetic taxonomy, taxa are organised and classified on the bases of similarities of the phenotypes of the organism.

• The modern taxonomy includes cladistic taxonomy which involves summarising knowledge about similarities among taxa in terms of a branching diagram called a cladogram depicting the hypothetical evolutionary histories of the organisms.

• Biogeography is also an important part of taxonomy because it analyses the pattern of distribution of organisms and relates these to the systematic of the organisms. Classification thus enables us to summarise our knowledge about the organisms, and that is one of the most important functions of taxonomy. The saving of time and effort is thus one way in which we can define the utility and purpose of classification.


Related Discussions:- Classify the diversity of organism in different groups

Long-term follow-up results , Long-term Follow-up Results :  To evaluate t...

Long-term Follow-up Results :  To evaluate the long-term results of surgery, one has to take into consideration the natural history, results of medical treatment and that of PTCA.

Gametogenesis, The process by which gametes are produced in the gonads is k...

The process by which gametes are produced in the gonads is known as gametogenesis. The process of formation of male gametes or sperm is known as spermatogenesis is of great sign

What is digestion, What  is digestion? The  ingested food material  is...

What  is digestion? The  ingested food material  is  broken down  into smaller constituents which  are assimilable  by  the  blood.  The  process  through which  the major nutr

How is the respiratory system of insects, Q. How is the respiratory system ...

Q. How is the respiratory system of insects with its independence between respiration and circulation related to the motor agility of some species of this arthropod class? Even

Define recommended dietary allowance for vitamin a, Requirement and Recomme...

Requirement and Recommended Dietary Allowance (RDA) for Vitamin A? Recommendations for adequate vitamin A intake based on the amounts needed to correct night blindness among vi

Rbc & wbc, difference between RBC and WBC for homework

difference between RBC and WBC for homework

Agro industrial-proteins, Proteins Protease inhibitors: Protease inh...

Proteins Protease inhibitors: Protease inhibitors are protein-based substances widely distributed within the plant kingdom, including the seeds of most cultivated legumes wh

Why vasa efferentia are the ductules, Vasa efferentia are the ductules lead...

Vasa efferentia are the ductules leading from: 1. Testicular lobules to rete testis 2. Rete testis to vas deferens 3. Vas deferens to epididymis 4. Epididymis to urethra

Obelia, what is obelia write its external feature and mainly economic impo...

what is obelia write its external feature and mainly economic important

Anatomy of coronary circulation, The epicardial coronary artery system cons...

The epicardial coronary artery system consists of the left and right coronary arteries, which normally arise from ostia located in the left and right sinuses of Valsalva, respectiv

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd