The Living World
Test-4

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which taxonomic category includes organisms with the greatest number of common characteristics?

Phylum
Class
Genus
Species
4

Species is the lowest taxonomic category among the given options. Members of a lower taxon share more common characteristics than members of a higher taxon.

What is meant by identification in the study of living organisms?

Determining the organism to which a particular name is attached
Grouping organisms only according to their economic uses
Assigning different local names to the same organism
Placing every organism directly in a kingdom
1

Identification involves correctly describing an organism and determining the organism to which a particular name is attached.

Which of the following forms the basis of modern taxonomic studies?

Only external structure and colour
External and internal structure, cell structure, development and ecological information
Only the local names and uses of organisms
Only the habitat in which an organism occurs
2

Modern taxonomic studies use external and internal structure, cell structure, developmental processes and ecological information.

Which statement correctly describes the taxonomic category “family”?

It is an assemblage of related orders.
It is a group of related genera with fewer similarities than those found within a genus.
It is the lowest category in the taxonomic hierarchy.
It consists of all the phyla belonging to a kingdom.
2

A family consists of related genera. Members grouped at the family level share fewer similarities than members grouped within the same genus or species.

Which set of processes is basic to taxonomy?

Growth, reproduction, metabolism and consciousness
Mutation, selection, adaptation and isolation
Characterisation, identification, classification and nomenclature
Observation, cultivation, preservation and hybridisation
3

Characterisation, identification, classification and nomenclature are the basic processes involved in taxonomy.

Which statement correctly defines classification?

It is the grouping of organisms into convenient categories based on observable characters.
It is the assignment of a scientific name without describing the organism.
It is the use of only local names for organisms.
It is the study of only evolutionary relationships among organisms.
1

Classification is the process of grouping organisms into convenient categories based on easily observable characters.

Which statement about binomial nomenclature is correct?

Both words of a biological name begin with capital letters.
The first word is the specific epithet and the second is the generic name.
Printed biological names are written in ordinary upright type.
The generic name begins with a capital letter and the specific epithet with a small letter.
4

In a biological name, the generic name begins with a capital letter and the specific epithet begins with a small letter. When printed, both words are italicised.

Which taxonomic category comprises a group of closely related species?

Order
Genus
Class
Phylum
2

A genus is an aggregate of closely related species. Species of the same genus share more characters with one another than with species of other genera.

What happens to the number of common characteristics as one moves from species towards kingdom?

It continuously increases.
It remains unchanged.
It first increases and then decreases.
It decreases.
4

As one moves from species towards kingdom, the number of common characteristics decreases. Lower taxa contain members with more characteristics in common.

Which of the following statements about systematics is incorrect?

It takes evolutionary relationships among organisms into account.
Its scope includes identification, nomenclature and classification.
It is restricted only to assigning scientific names to organisms.
The word systematics is derived from the Latin word systema.
3

Systematics is not restricted to assigning scientific names. Its scope includes identification, nomenclature and classification, and it also considers evolutionary relationships among organisms.

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