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

Define nutritional management of food allergies, Define Nutritional Managem...

Define Nutritional Management of Food Allergies and Food Intolerance? The term "hypersensitivity" is general and may include true allergies, reactions that do not affect the im

Bladder worm, what is the function of the bladder in the bladder worm

what is the function of the bladder in the bladder worm

Photosynthesis carbon dioxide, Q. Why is it said that during photosynthesis...

Q. Why is it said that during photosynthesis carbon dioxide is improved to form glucose? During photosynthesis carbon dioxide is energetically improve with hydrogen from water.

Oxygen - aquatic ecosystem, Oxygen - Aquatic Ecosystem Oxygen is found...

Oxygen - Aquatic Ecosystem Oxygen is found in waters in dissolved form. It enters the aquatic ecosystem through the air water interface and by the photosynthetic activities of

What do you mean by cancer, Q. What is cancer? The Cancers are malign n...

Q. What is cancer? The Cancers are malign neoplasias that is abnormal and uncontrolled proliferation of cells that can disseminate to other sites of the body. The Cancer dissem

What is the function of the umbilical cord, What is the function of the umb...

What is the function of the umbilical cord? The umbilical cord is a set of blood vessels that connects the fetus with the placenta. In the fetus one extremity of the cord inse

Show the efficient contraceptive method, Q. Why is the use of condoms not j...

Q. Why is the use of condoms not just a contraceptive method but also a health protection behavior? The use of condoms besides being an efficient contraceptive method also help

Define causes of iron deficiency anaemia, Define Causes of iron Deficiency ...

Define Causes of iron Deficiency Anaemia? Anaemia is a condition in which the blood cannot carry enough oxygen. This may be because there are fewer red blood cells than normal,

Explain the protein energy malnutrition (pem), Explain the Protein Energy M...

Explain the Protein Energy Malnutrition (PEM)? Protein Energy Malnutrition (PEM) is the deficiency of macronutrients or energy and protein in the diet and forms the most import

What are the destinations of those oxygen atoms, Q. Photosynthesis is the m...

Q. Photosynthesis is the most significant producer of molecular oxygen (O2) on our planet. From which molecule do oxygen atoms liberated by photosynthesis come and from which other

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