The Living World Chapter-Wise Test 8

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following taxonomic categories includes the greatest number of species?

Genus
Family
Order
Kingdom
4

Kingdom is the highest and broadest category among the given options. It includes organisms belonging to different phyla or divisions and therefore contains the greatest number of species.

Which of the following scientific names is written correctly?

panthera Tigris
Panthera Tigris
panthera tigris
Panthera tigris
4

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

Which of the following statements about binomial nomenclature is incorrect?

A biological name has two components.
The specific epithet is written before the generic name.
Biological names are generally in Latin or Latinised.
The system was given by Carolus Linnaeus.
2

The generic name is written first and is followed by the specific epithet. For example, in Panthera tigris, Panthera is the generic name and tigris is the specific epithet.

Why is biological classification necessary?

It groups organisms into convenient categories and facilitates their study.
It prevents the identification of new organisms.
It assigns names only to economically useful organisms.
It is applicable only to plants.
1

Because it is nearly impossible to study all organisms individually, classification groups them into convenient categories based on observable characters and facilitates their study.

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

Only the external appearance of organisms
Only the economic uses of organisms
External and internal structure, cell structure, development and ecological information
Only the habitat in which an organism is found
3

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

Which taxonomic category ranks immediately above genus?

Species
Family
Order
Class
2

Family ranks immediately above genus. A family consists of related genera that share fewer similarities than the species grouped within a genus.

What does the term “taxon” represent in biological classification?

Only the lowest category of classification
A rule used for writing biological names
A unit of classification representing a rank or category
A group based only on the economic uses of organisms
3

A taxon is a unit of classification representing a rank or category. Species, genus, family and order are examples of taxa at different hierarchical levels.

Why are scientific names preferred over local names?

Scientific names are always shorter than local names.
They provide a universally accepted name for each organism.
Local names cannot be used for plants.
They indicate the complete evolutionary history of an organism.
2

Local names vary from place to place. Scientific nomenclature ensures that a particular organism is known by the same name throughout the world, avoiding confusion.

What does “Linn.” indicate in the biological name Mangifera indica Linn.?

The plant belongs to the family Linnaceae.
The plant was first discovered in India.
The generic name has been abbreviated.
The species was first described by Linnaeus.
4

The abbreviated author name written after the specific epithet indicates the scientist who first described the species. “Linn.” indicates Linnaeus.

Which category contains organisms with the greatest number of common characteristics?

Species
Genus
Class
Phylum
1

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

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