Question:
Phenetic classification of organisms is based on
Phenetic classification of organisms is based on
Updated On: Jun 7, 2022
- Observable characteristics of existing organisms
- The ancestral lineage of existing organisms
- Dendogram based on DNA characteristics
- Sexual characteristics
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Phenetic classification is a type of numerical taxonomy. In this type of classification the organisms are arranged according to overall similarity of existing organisms based on available characters. It is also called adansonian taxonomy because the same was first attempted by Adanson (1763), of course on the basis of external traits only. Numerical taxonomy evolved around 1950. It has received impetus with the availability of calculating machines and computers. In numerical taxonomy as many characters as possible are employed for evaluating degree of similarity and difference. All characteristics used in analysis are given equal weightage and importance. A proper selection of characters, their organisation and analysis in the light of current knowledge is key to success of this method. A lot of subjectivity can creep in depending upon the judgement of the biosystematist. No weightage is given to the quantity of the character present.
Was this answer helpful?
0
0
Top Questions on biological classification
- Study the following and pick up the correct combinations:
- TS EAMCET - 2024
- Zoology
- biological classification
- Red Data Book describes
- WBJEE JENPAS UG - 2022
- Biology
- biological classification
- Match the compounds of Column I with their functions in Column II.
Column I Column II 1. Trypsin p. Fights infectious agents 2. GLUT - 4 q. Is an intercellular ground substance 3. Collagen r. Works as an enzyme 4. Antibody s. Enables glucose transport into cells - KCET - 2021
- Biology
- biological classification
- Which of the following statements is correct?
- NEET (UG) - 2021
- Biology
- biological classification
- Match the organisms in column-I with habitats in column-II Select the correct answer from the options given below :-
- NEET (UG) - 2019
- Biology
- biological classification
View More Questions
Questions Asked in JIPMER exam
- Binomial nomenclature was first introduced by
- JIPMER - 2015
- KCET - 2022
- Diversity In The Living World
- A convex lens $'A'$ of focal length $20\, cm$ and a concave lens $'B'$ of focal length $5\, cm$ are kept along the same axis with a distance $'d'$ between them. If a parallel beam of light falling on $'A'$ leaves $'B'$ as a parallel beam, then the distance $'d'$ in cm will be :
- JIPMER - 2021
- Spherical Mirrors
- A bacterial flagellum is composed of
- JIPMER - 2021
- Prokaryotic Cells
- $2,4-DNP $ test can be used to identify :
- JIPMER - 2021
- Chemical Reactions
- How many moles of acidified $K_2Cr_2O_7$ is required to liberate $6$ moles of $I_2$ from an aqueous solution of $I^-$ ?
- JIPMER - 2020
- Mole concept and Molar Masses
View More Questions
Concepts Used:
Biological Classification
The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows:
