The Living World Chapter-Wise Test 7

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which branch of biology deals with the characterisation, identification, nomenclature and classification of organisms?

Morphology
Taxonomy
Genetics
Cytology
2

Taxonomy includes characterisation, identification, classification and nomenclature of organisms.

Which of the following statements about binomial nomenclature is correct?

Each organism is given a scientific name consisting of only one word.
The specific epithet is written before the generic name.
The generic name is written first and begins with a capital letter.
Both components of a biological name begin with capital letters.
3

In binomial nomenclature, the generic name is written first and begins with a capital letter. It is followed by the specific epithet, which begins with a small letter.

Which taxonomic category ranks immediately above order?

Family
Genus
Phylum
Class
4

Class ranks immediately above order. The ascending sequence is species, genus, family, order, class, phylum or division, and kingdom.

Which of the following taxonomic categories is used for plants rather than animals?

Phylum
Division
Class
Order
2

In plants, classes with a few similar characters are assigned to the higher category called division. In animals, the corresponding category is phylum.

Which taxonomic category is an assemblage of related families sharing a few similar characters?

Order
Species
Genus
Class
1

Order is a higher taxonomic category formed by grouping related families that share a few similar characters. For example, Carnivora includes Felidae and Canidae.

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

Only external appearance
Only the economic uses of organisms
Only geographical distribution
External and internal structure, cell structure, development and ecological information
4

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

Which statement correctly describes the relationship between taxonomic rank and shared characteristics?

Members of lower taxa share more characteristics.
Members of higher taxa share more characteristics.
All taxonomic ranks contain organisms with equal similarities.
Members of a kingdom share more characteristics than members of a species.
1

Members of lower taxa share more characteristics. As one moves from species towards kingdom, the number of common characteristics decreases.

Which of the following correctly represents a plant family mentioned in the chapter?

Solanum
Datura
Solanaceae
Petunia
3

Solanaceae is a family containing related genera such as Solanum, Petunia and Datura.

What is meant by identification in the study of organisms?

Grouping organisms according to their uses
Assigning several local names to an organism
Placing every organism directly in a kingdom
Determining the organism to which a particular name is attached
4

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

Which of the following correctly defines a species?

A group of organisms occupying the same habitat
A group of individual organisms with fundamental similarities
A group containing several related genera
A group containing all organisms of a kingdom
2

A species is a group of individual organisms with fundamental similarities. Closely related species can be distinguished from one another by distinct morphological differences.

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