Most Expected Questions of Life Science: Taxonomy!

Most Important Questions of Taxonomy (Download PDF)

Question 1. Numerical taxonomy is also known as?

Phenetics
Statistical taxonomy
Computer-aided taxonomy
All of the above

Ans. D

Solution. Numerical taxonomy is one of the methods of classification systems in biology. In this method, the grouping of taxonomic units is done by numerical methods according to their characters; cluster analysis of characters is done with the computational method. This method is also known as phenetics wherein the attempting of groups is done in higher taxa based on overall similarity.

Question 2. The following sequence in taxonomic categories is given. Choose the correct one.

Phylum- Order-Class-Tribe-Family-Genus-Species.
Division-Class-Order-Family-Tribe-Genus-Species.
Class-Phylum-Tribe-Order-Family-Genus-Species.
Division-Class-Family-Tribe-Order-Genus-Species.

Ans. A

Solution. In given categories in taxonomic range of biological system, species is smallest unit, many species make one genus, several genera come into one family, and many families makes tribe, tribe makes class, classes come under order and order makes phylum.

Question.3. In plants, for establishing genetic relationship, which technique is used routinely?

Chromosome morphology
Amino acid sequence
Serological investigation
Isoenzyme profiling

Ans. B

Solution. In plants, for establishing genetic relationship, Amino acid sequence is used routinely, in this method evolutionary relation between plant species can be determined.

Question 4. In Taxonomy, original specimens which are submitted by author himself is known as?

Paratype
Paralectotype
Isotype
Holotype

Ans. D

Solution. Holotype is a type of specimen which is submitted by author himself. Paratype – representative specimen(s), other than the holotype, in the type series referred to in the original description. Paralectotype – the type specimens remaining after a lectotype is designated. Isotype is known as any duplicate specimen of Holotype.

Question 5. In taxonomy, different hybrid form of same percentage is known as?

Variety
Race
Apomicts
Nothomorphs

Ans. D

Solution. Nothomophs are known as member of groups having different hybrid forms of same percentage. Apomicts are seed forms without fertilization. Race is a system of classification of human beings only, whereas variety is the most refined division of all life forms.

Question 6. A taxonomic group of any ranking is known as:

Taxon
Order
Phylum
Family

Ans. A

Solution. Taxon is a unit of taxonomy, it is unit of any rank like phylum, kingdom order class, which designates organism into a group.

Question 7. If two organisms are placed in the same phylum, they are surely also part of the same:

Kingdom
Species
Family
Class

Ans. A

Solution.

The kingdom is the top most taxon in taxonomy, after that phylum comes if any organism come in the same phylum, it surely comes in the same kingdom.

Question. 8. The following classification system is given below;

Bentham and Hooker’s system
Hutchinson system
Linnaeus system
Cronquist’s system

Arrange the chronological order of these classification systems?

II-III-I-IV
I-II-III-IV
I-III-II-IV
IV-III-II-I

Ans. C

Solution. In chronological order, Bentham and Hooker system comes into 1882, after that Linnaeus system comes thereafter Hutchinson system and Cronquist’s system comes.

Question 9. Match the following

Two kingdom System A) Carl Woese
Three Domain system B) Earnest Haeckel
Three Kingdom system C) Carolus Linnaeus
Five kingdom system D) RH Whittaker

And choose the correct one

I-D, II-A, III-B, IV-C
I-C, II-A, III-B, IV-D
I-C, II-A, III-B, IV-D
I-C, II-A, III-B, IV-D

Ans. B

Solution. Two kingdom system was idealised by Carolus Linnaeus, in this system two kingdom Plantae and Animalia were introduced; the three domain system was given by Carl Woese in this system all organisms are divided into three domain that is Archaea, the Bacteria, and the Eukarya. The three kingdom system given by Earnest Haeckel wherein he proposed three kingdom of organisms, that is, Plantae, Protista and Animalia. Five kingdom system was proposed by RH Whittaker in this system five kingdoms Monera, Protista, Fungi, Plantae and animalia were introduced.

Question 10. Match the following

Bergey’s Manual A) Carolus Linnaeus
Binomial Nomenclature B) Cyanobacteria
Kingdom Monera C) Mangifera
Genus of Mango D) Classification of bacteria

Choose the correct one

I-A, II-D, III-B, IV-C
I-B, II-A, III-D, IV-C
I-D, II-A, III-B, IV-C
I-C, II-A, III-B, IV-A

Ans. C

Solution. Bergeys manual is a manual of bacteria classification; Binomial nomenclature system is given by Carolus Linnaeus; Cyanobacteria belongs to kingdom Monera and Mangifera is the genus of mango.